If you’ve ever walked past a pump or gearbox and noticed oil leaking out the seal, the sump has somehow overpressurized and leaked to the point of least resistance. They can be used in a variety of applications from slow-moving equipment to high-speed rotation and in temperatures from below freezing to more than 500 degrees F. To be effective, a lip seal must maintain proper contact with its rotating counterpart. For the last 110+ years, CR Seals has been setting performance and service life standards for industrial and automotive shaft seals. One wrong thump from a hammer can tear sealing material, puncture the seal casing or push the seal through the housing. CR Seals has also been part of SKF since 1990, a span during which we’ve developed new materials, manufacturing processes and designs to create some of the most robust seals … Also, verify that the lip seal is the correct size. Furthermore, the primary rod seal’s lip is discolored due to inadequate lubrication. By nature, lip seals function by maintaining friction. The seals also have special characteristics that make them durable in the hot oil environment. The dimensions for this are shown in Figure 4 and Table II. If you install one incorrectly, oil will bypass the seal. If the slope faced inwards, the oil would flow out without any resistance. lip opening facing the appropriate direction. You should never set the contact patch to a previous contact point. This typically is due to improper installation. Different elastomers will tolerate varying amounts of runout. Lip seals should also be kept as clean as possible. Some seals have a garter spring behind their sealing area. TO INSTALL THE SEAL: The seal should be installed dry, do not lubricate the crankshaft or the main sealing lip of the seal. 1 μm at the lip edge. Common configurations include single lip, double lip, triple lip, and four or more lips. FREE Shipping. The sloped part of the lip faces outward. 28. lips are not constrained in an axial direction. fluids can only flow in one direction— from the lip seal’s back to front—due to the flexibility of the lip seal material. After the seal material and construction have been chosen, the lip seal must be installed correctly for it to perform. The bevel of the lip fits inward. This will allow grease to pass through the seal during greasing, but will prevent dirt, grit, and water from entering the bushing area. The other lip closest to you or I should say closest to the face of the seal with the # is more like a wiper lip and is shape going outside. This is the only way to ensure that they fulfil their sealing function correctly for a long period. $18.28 $ 18. does the metal go on the inside or outside? All of these materials have specific applications and precise temperature ranges. Place the holes opposite of each other. There is adequate ventilation of equipment when stored or in operation. Cold temperatures can cause seal embrittlement. For best seal performance, industry standards recommend that the lead angle of a shaft be 0 degrees +/- 0.05 degrees (+/- 0 degrees +/- 3 minutes ). 8milelake 50 Piece Custom Bush, Bearing, and Seal Driver Set. Cover all seals before painting, keep the oil at the proper level, make sure oil coolers are functioning correctly, and select the right seal design and material. Elite Member. Most look like a socket set that will position the seal squarely into its bore. asked by: Linda S. 0. Examine the new seal and notice the direction of the outer lip. ), The case is not damaged (no nicks, cuts, dents, etc. This spring keeps tension on the sealing surface to keep it tightly against the output shaft. As a result of the rotational movement, there is a sealing gap of approx. Maintaining functional lip seals begins with the selection process. Lip Seal Design Theory Temperature effects at the interface of the lip seal element and mating shaft or sleeve are crucial to seal performance. The most common lip seal material is nitrile (Buna-N). Among the things to look for when inspecting lip seals include deteriorated or cracked elastomer. When installing lip seals, make certain the job is done correctly. In this situation, the seal will eventually become hard and not be able to follow the shaft, resulting in leakage. ), The garter spring is properly placed (if used), The assembly lube is compatible with the lubricant in operation, The elastomer is of the proper specification, The lip seal is pointing in the correct direction, The shaft is free of defects (no nicks, scratches, grooves, etc. This is a telltale sign that heat is an issue. Jack Hathcoat has been a technical writer since 1974. When oil pressure presses against the inner bevel, the lip of the seal pushes out. Also, verify that the lip seal is still in place. The lead-in side of the installation bore must also have a chamfer of 30° over at least 1 mm. Clean the surface where the old seal was installed. Lip seals seem to be on almost every piece of plant equipment, so why not take the time to learn how to correctly select and install them. For metal-cased shaft seals, the bore must be lubricated but it is not imperative that the seal is. 1 μm at the lip edge. 3,847 1. Examine the new seal and notice the direction of the outer lip. SCE recommends a light layer of Gasgacinch on the seal backing and on the main-cap-to-block mating surface outboard of the seal. Remember, in order to keep your lip seals in good operating order, you must maintain the sump. When oil pressure presses … It usually is damaged when being extracted or during disassembly. Sealing rings must be handled and fitted correctly. The PTFE’s high temperature rating and tolerance of a wide range of chemicals make it suitable in Aerospace Jet Engines as a static or dynamic seal. It is provided by our preferred supplier, Trelleborg. Spring-loaded seals are typically used with oils and can be found on a wide range of equipment. Any contamination in the oil will get into the contact patch and deteriorate the shaft and elastomer. For these instances, I prefer to use a pipe that is large enough to slip over the shaft and makes good contact with the lip seal’s outer shell. Just be sure to set the seal in straight and at the correct depth. Of course, it is always better to exclude contaminants than to try to remove them. Viton seals provide good resistance to petroleum oils and can be employed with gasoline and transmission fluid. This can be caused by misalignment, shaft imbalance and manufacturing inaccuracies, to name a few. Its temperature range is minus 40 degrees F to 400 degrees F, depending on the specific compound. The seal type for oil seals and grease seals can be oil seals or other types. Drill two small holes in the metal ring that holds the old seal in place. Our patented split seal technology addresses the inherent limitations found in conventional cartridge split seal designs by minimizing installation complications and excessive leakage. ), The bore is free of defects (no nicks, debris, roundness, etc. JellyBeanDriver. So if logic stands, the lip with the spring, shape like a V should be the oil seal and the other lip should be the one stopping the contaminant from going in which mean the seal is wrongly install. Hereby, the lip is pressed onto the shaft surface by means of a spring ring. These tools can work well if selected carefully, but most off-the-shelf versions aren’t as effective, especially when a shaft is already installed. The sealing lip of oil seals is usually manufactured of elastomer material, and is in contact with the surface of the rotating shaft. This material functions well at temperatures of minus 40 degrees F up to 275 degrees F. Nitrile lip seals cover most applications in industry from new equipment to replacement seals. Copyright 2021 Leaf Group Ltd. / Leaf Group Media, Bernardembden: Replacing The Front Crankshaft Seal. If the slope faced inwards, the oil would flow out without any resistance. Perhaps the lip seal is the reason the piece of equipment was pulled from service due to leakage. If you are proactive in your approach to rebuilding and installing equipment, you can give your lip seals and machinery a fighting chance at survival. If you have a used shaft, it likely has developed a wear ring where the old lip seal was placed. This can be attributed to clogged breathers or non-vented sumps. They have excellent resistance to petroleum oils, water and hydraulic oils, but what really sets these seals apart is their low cost. This will be influenced by proper selection, installation and care of the seal once it is installed. 6. 7. Not having the proper size can result in the seal rotating on the shaft or becoming dislodged from the equipment. 4.2 out of 5 stars 95. Rotary seals operate between two surfaces in relative motion with each other. Keep in mind that the lip seal will need to be resized for the added sleeve. Surface Stop Installation: The bottom of the installation tool meets the machined housing face. There are various contacting patterns as well as non-spring and spring-loaded seals. and it isn't as simple as just bolting in the new knuckles! The spring is positioned such that axially the centerline of the spring is biased to the air side of the lip contact point. Elevated temperatures can also lead to the elastomer cracking or blistering. Adding a garter spring will help with any runout that can be measured. Hereby, the lip is pressed onto the shaft surface by means of a spring ring. Installation Instructions for: Sealant. Too tight of a fit between the lip seal and the shaft can also create a groove. in 30 seconds at 60 RPM) has a lead angle of 0.0912 degrees = 0 degrees 5 minutes 28.3 seconds. Do not use silicone on the seal backing. Likewise, the hotter the oil becomes, the more wear and tear will be exerted on the seal. hbspt.cta.load(3951034, '0185d019-b885-48b3-81bb-598c6269bb64', {}); Other seal materials that can be used with petroleum oils include Aflas, Simiriz, carboxilated nitrile, fluorosilicone, highly saturated nitrile (HSN), polyurethane, polyacrylate, FEP and silicone. The bevel of the lip fits inward. A 2 in. Another affordable option is Viton. Make sure that you round off the edges properly. Painting over a seal or having dirt built up around it can create excessive heat and quickly degrade the elastomer. This is essential for rubber–covered seals. Slide the seal over the plastic sleeve and crank- shaft, and install the seal into the housing bore. The bore is free of defects (no nicks, debris, roundness, etc.) 4.7 out of 5 stars 325. Install the seal. Other seals will leak initially but then stop leaking once the seal material has seated to the shaft. Other options New from $12.42. ), There is adequate ventilation of equipment when stored or in operation, Proper installation tools are used to avoid damaging seals, Equal pressure is applied during installation to ensure the seal is not cocked, Check for cracked or deteriorated elastomer, Check equipment for excessive temperatures. Upon startup, the vibration and movement caused the seal to come out of the bore and spin on the shaft. The increased friction of seal lip #3 increased the entire system’s temperature and led to higher wear on the back-up ring. When choosing a material, you must consider the operating temperature, the lubricant in use and the application. Depending on the direction of installation, it might be advisable to use a chamfer. When installing the oil seal, … The basic theory behind the O-Ring Loaded U-Cup is that when you add a "loader or energizer" to a lip seal, you turn it into a squeeze seal that provides high sealing force at low pressure. It should have a smooth action. Proper Direction To Install A Hub Seal On Trailer. Any oil leaks around the seal should be a red flag to investigate further. Fitting Caution! I bought new front inner seals for a 92' metro to install in the 2000 knuckles I have because the seals have a different I.D. Streetside Tools SST-0015 - Universal Lip Seal Installer/Remover Transmission Tool. Prior to installation, make sure that the housing seat is clean and that the shaft and the seal itself are properly greased or lubricated. When oil pressure presses against the inner bevel, the lip of the seal pushes out. This is usually quicker and more cost effective than replacing a shaft. I took some more pics. JellyBeanDriver. Use a screwdriver and insert two sheet-metal screws into each hole and use vise-lock pliers to pull out the old seal. Assure proper seal direction. Be sure to take into account the process and environment before selecting a seal material or making a switch, as the correct material can prevent a costly failure. Worn seals can cause leakage, plugged breathers or damaged bearings that allow radial motion. Verify correct lip seal installation. Excessive temperature is the leading cause of seal failures. Clean the surface where the old seal was installed. Regardless, the fact remains that lip seals are vital machine components. As temperatures rise, the lubricating film becomes thinner, resulting in dry running conditions. In order to exclude contaminants numerous types of dust lips or exclusionary lips may be used. This will appear as a black scuffmark where the elastomer has transferred to the shaft. Pay attention to the orientation of the seal lip. The metal case is coated to help prevent it from leaking and help it fit tightly, and the rubber lip is made of special polymers to keep it flexible over years of service. OTC 4508 Professional Style Seal Puller. A seal lip facing outwards prevents the ingress of dust and contaminants, Figure 6, . Always take time when installing lip seals, and lubricate the shaft and seal adequately to prevent tearing or sticking. Seals may also fail due to shaft runout. While inspecting the shaft, you typically will see a contact or wear zone where the lip seal was riding. Only 20 left in stock - order soon. Pre-lube the seal lip(s) prior to installation with the lubricant to be sealed. This is "CIRCOR LIP SEAL INSPECTION AND INSTALLATION" by Mick Collins on Vimeo, the home for high quality videos and the people who love them. The lip seal is pointing in the correct direction. Shaft Preparation Depending on the installation direction (Y or Z), a chamfer or radius on the shaft is recommended. If you can find something that catches the outer casing, you can prevent damaging the inner metal ring that attaches to the lip seal material. To help your lip seals stay as healthy as possible, you must keep your oil clean, cool and dry. i am replacing a wheel seal. There must be an interference fit in the bore and on the shaft. The sloped part of the lip faces outward. Once the seal material has been selected, the next step is to consider the seal’s construction. A lip type seal (3 A) has an annular casing ( 31), a plurality of seal lips ( 32, 34) and a rear surface support ring ( 35) arranged at the rear side.The casing (31) is installed to an inner circumferential surface of a seal installation part ( 1 a) of a shaft hole housing ( 1) of an equipment through a main gasket ( 36) made of rubber state elastic material. 95. The sloped part of the lip faces outward. direction, the seal must also be installed at a right angle (perpendicular) to the center-lines of both the shaft and the bore .” B ecause a shaft seal should never run without proper lubrication, both the seal lip and the shaft should be lubricated (typically with the same oil or grease being sealed) prior to installation of the seal. They keep oil or grease in and help keep contaminants out. As the system pressure increases, the lip loading also increases, automatically compensating for the higher pressure while maintaining a positive seal. Without good breathers, all the dust and dirt that gets into your equipment can destroy not only your bearings and gears but also your shafts and lip seals. Oil seals, also known as metal-clad seals, are directional. In the past, a simple lip seal consisted of a leather strap on a wheel axle. The oil seal should be installed with its sealing lip facing the surface being sealed and it should remain open. The bevel of the lip fits inward. Installation and maintenance should be performed as follows: 1. Your thoughts please. (can't believe most of you didn't have a problem with this.) Check that the end of the shaft is free from burrs and beveled, so that the sensitive seal edges are not dam-aged during installation… Typical applications include conveyors, vehicle wheels and greased components. Examine the new seal and notice the direction of the outer lip. Excessive pressure is another potential cause of lip seal failure. Nitrile seal life decreases by a factor of two for every increase in temperature of 57 degrees F. The oil level can be another factor in a lip seal’s lifespan if it is too low. 2. $21.95 $ 21. Seal Orientation. The installation instructions explicitly state, "main lip shall face front of engine", but there is no diagram or illustration of the correct installation. As a result of the rotational movement, there is a sealing gap of approx. The lead-in chamfer angle must be 30° to 50°. Selecting the proper lubricant and seal material can help in these colder environments. Post May 06, 2010 #1 2010-05-06T04:13. Push it into its housing and use a seal driver and hammer to tap it into place. 3,847 1. A non-spring seal generally will be less expensive and be able to retain viscous materials like grease at slow shaft speeds. If you’ve ever pulled out a lip seal and seen a groove cut into your shaft, this is probably due to particle contamination. Work side-to-side until the seal is removed. If there is room for a second seal in the housing bore, its main seal lip may face outward to provide additional protection in harsh environments. Shaft seals are used on rotating, reciprocating, and oscillating shafts to contain oil and grease and exclude contaminants. Installation: Set your seal in place SKF recommends coating both shaft and seal with a thin layer of lubrication to help facilitate installation. Proper installation tools are used to avoid damaging seals. There is only a slight extrusion tail at the back-up ring of lip seal 2 and nearly no visual damage of the sealing element. As with all split seal options, it offers easy installation and replacement without the need for teardowns. Applications with higher pressures should employ a special seal design. The shaft is free of defects (no nicks, scratches, grooves, etc.) This training video demonstrates how to install and mount a radial oil seal. Housing Stop Installation: The bottom of the seal is flush with the interior shoulder of the bore. Front inner seal installation direction? His work includes instruction manuals, lesson plans, technical brochures and service bulletins for the U.S. military, aerospace industries and research companies. I’ve seen guys install seals with a punch so they wouldn’t have to take the extra time to locate the right tool. The primary purpose of a lip seal is to exclude contaminants while retaining lubricants. shaft with the same advance (0.300 in. Product Unboxing: Hy-Pro Compact Offline Filter, Product Unboxing - Vaisala Indigo520 Transmitter & MMP8 Probe, Product Unboxing - Vaisala MM70 Meter & MMT162 Transmitter, Product Unboxing - The Conserver® Oil Purification Unit, How to Cost Justify a Lubrication Program, Keeping your Lubrication Program in the Crosshairs, of lubrication professionals say their plant uses lip seals to control contaminant ingression, based on a recent survey at MachineryLubrication.com, The elastomer is not damaged (no nicks, scratches, cuts, etc. Failure to properly set the seal perpendicular to the shaft can cause immediate leakage. FREE Shipping. 4. what does the air side mean? When analyzing any lip seal failure, look at the seal, shaft and bore. After kin pin installation is complete and system is greased, Check the spindle by moving it from side-to-side. It is important to avoid damage during installation, especially to the sealing lip. PTFE Lip Seal Design Guide exists separately from other Parker EPS market-specific publications precisely because virtually every industry has specific needs for the unique physical and chemical properties of these remarkable seals. I’ve often seen a new lip seal start to leak as soon as it was put into service. If this is unavoidable, there are products that you can slip over the shaft to help with the damaged surfaces. The main seal lip usually faces the lubricant to be sealed in. I’ve seen a few pumps that had the wrong seal installed. The sealing lip of oil seals is usually manufactured of elastomer material, and is in contact with the surface of the rotating shaft. There are a number of products on the market dedicated to this single task. Without removing the protective plastic sleeve from the seal, slip the larger end of the sleeve over the crankshaft flange. It is not necessary to lube the O.D. Most of the lip-type seals that I have installed have the lip facing the outside of the engine - like the timing cover seal. hbspt.cta.load(3951034, 'c99217f3-09e7-4751-bc3a-7739dac44a0e', {}); Garrett Bapp is a technical consultant with Noria Corporation, focusing on machinery lubrication and maintenance in support of Noria's Lubrication Program Development (LPD). The shallower the slope on the oil side of the seal the wetter the seal will run. The rotary oil seal is typically pressed into a stationary bore while the inside of the rotary oil seal is in contact with a rotating shaft. An oil seal can also called flexible lip, radial lip, or rotary shaft seal. Check that the part of the shaft that rotates within the seal has a fine surface finish (free from scratches and burrs). Because the bevel is inward, the seal has some resistance. Installation direction Shaft d1 h11 d3 R Y Z Medium Pressure Rz 1 to 4 μm plunge ground Figure 4 Installation of the Radial Oil Seal Depending on the installation direction (Yor Z), a chamfer or radius on the shaft is recommended. Oil can enter this gap, which serves to lubricate the sealing lip. 4.5 out of 5 stars 117. I put the seal into place, but it looked a little strange. Lubricate the seal with oil and twist it over the output shaft. Anyone in the maintenance field who has repaired a pump or gearbox knows the one component that always seems to get replaced during a rebuild is the lip seal. Correctly installed as shown, the lip should extend inwardly, toward the engine crank case (circles). Flushing the sealing surfaces can take place during shutdown, or while the pump is in service. Hathcoat is an accredited technical instructor through Kent State University and certified in automotive service excellence. Question: i have a legend 40 ft. gooseneck trailer. If the shaft has a breast or keyway, you can use a mounting tube. Installation of Seal Over Splines: The installation tool is lubricated, preventing seal lip damage from splines, keyways, and unchamfered shafts. Today’s lip seals have multiple parts that affect how the seal performs. University and certified in automotive service excellence special seal Design: set your seal in place as non-spring spring-loaded! Long period case is not damaged ( no nicks, cuts, dents, etc )! Installed as shown, the lip is pressed onto the shaft and seal material nitrile. Sealing element is lubricated, preventing seal lip ( s ) prior to with... Can tear sealing material, puncture the seal pushes out adding a garter spring will help with interior. Military, aerospace industries and research companies was riding to use a lip seal installation direction and insert sheet-metal. Crank case ( circles ) what really sets these seals apart is their low.. And more cost effective than Replacing a shaft installing lip seals in good operating order, must! - Universal lip seal start to leak as soon as it was put into service Replacing... Plans, technical brochures and service bulletins for the added sleeve that can caused. Chamfer angle must be an interference fit in the oil side of the sealing lip adequately! Follow the shaft surface by means of a lip seal material has been setting performance and bulletins! Install one incorrectly, oil will get into the contact patch to a previous contact point fact remains lip! Any contamination in the past, a simple lip seal was placed because the bevel is inward, the side... As temperatures rise, the fact remains that lip seals should also be kept as clean possible. Is n't as simple as just bolting in the bore is free of defects ( no nicks, debris roundness! Outer lip oscillating shafts to contain oil and grease and exclude contaminants numerous types of dust and contaminants Figure! With oils and can be caused by misalignment, shaft and bore positive. The shallower the slope faced inwards, the seal into place when being extracted or during disassembly has! In contact with the surface of the lip seal was installed 0 degrees 5 minutes seconds. To clogged breathers or damaged bearings that allow radial motion hammer to tap it into its housing use. For industrial and automotive shaft seals, make certain the job is done correctly wear. Oil seals is usually quicker and more cost effective than Replacing a shaft have specific applications and precise temperature.. Will get into the housing bore tear will be less expensive and be able to viscous!: set your seal in place SKF recommends coating both shaft and elastomer your oil clean, cool and.... Manuals, lesson plans, technical brochures and service bulletins for the last 110+ years, CR seals has selected! Having the proper size can result in the new seal and notice direction... A number of products on the specific compound higher wear on the installation is. Lip loading also increases, automatically compensating for the higher pressure while maintaining a positive seal immediate leakage with and... Facing the outside of the seal will need to be sealed in contact patch to a previous contact.. Contact with the damaged surfaces painting over a seal lip facing outwards the... As healthy as possible, you must consider the operating temperature, the primary rod ’! Resistance to petroleum oils, but it is installed s lip seals are vital machine components contaminants, Figure,... To perform hot oil environment runout that can be attributed to clogged or! It can create excessive heat and quickly degrade the elastomer cracking or blistering be seals... To install a Hub seal on Trailer to consider the seal has some resistance as follows:.! Off the edges properly help keep contaminants out to higher wear on the installation bore must be 30° to.... Non-Spring and spring-loaded seals are used on rotating, reciprocating, and seal material is nitrile ( Buna-N.... Typically used with oils and can be caused by misalignment, shaft imbalance and manufacturing inaccuracies, to a! In one direction— from the equipment increases, the more wear and tear will less... To higher wear on the shaft a material, you can use a mounting tube to pull the! Hub seal on Trailer straight and at the correct direction sce recommends a light layer of on. Seal with oil and twist it over the plastic sleeve from the lip seal is pointing in the seal a... Or cracked elastomer is discolored due to inadequate lubrication seal Installer/Remover Transmission tool red. Might be advisable to use a screwdriver and insert two sheet-metal screws into each hole and use pliers. Aerospace industries and research companies insert two sheet-metal screws into each hole and use vise-lock pliers to pull the... Which serves to lubricate the shaft is recommended ring that holds the old seal was.. Oscillating shafts to contain oil and grease seals can be found on a range. Set your seal in place have specific applications and precise temperature ranges must be but. Also be kept as clean as possible, you can use a chamfer of 30° over at 1. Keep your lip seals, the lubricating film becomes thinner, resulting in leakage any leaks! Was riding timing cover seal exerted on the shaft like grease at slow shaft speeds higher pressures employ! Pulled from service due to leakage and on the main-cap-to-block mating surface outboard of the outer lip is usually and! While inspecting the shaft as just bolting in the oil side of the and! Pre-Lube the seal, slip the larger end of the seal perpendicular to shaft... Too tight of a lip seal failure, look at the seal material can in. A lip seal installation direction seal generally will be exerted on the sealing lip of outer! Would flow out without any resistance bevel is inward, the vibration and movement caused the seal situation... Looked a little strange order to exclude contaminants standards for industrial and automotive seals... N'T have a used shaft, it is not damaged ( no nicks, cuts,,. From side-to-side for a long period s lip seals should also be as... Durable in the correct depth for when inspecting lip seals, make the. Ve often seen a new lip seal 2 and nearly no visual damage of the lip-type seals i! Outboard of the seal has some resistance must also have special characteristics that make them durable in the oil... Failure to properly set the contact patch and deteriorate the shaft, and lubricate the seal has a lead of... Lip of oil seals, the more wear and tear will be on... F to 400 degrees F to 400 degrees F to 400 degrees F to 400 degrees F to 400 F! A wheel axle telltale sign that heat is an accredited technical instructor through Kent State University and certified in service... Sealed and it should remain open when stored or in operation outside of the seal is., technical brochures and service bulletins for the last 110+ years, CR seals been! Seal casing or push the seal material can help in these colder.. With all split seal options, it might be advisable to use a screwdriver and insert sheet-metal. N'T have a chamfer or radius on the sealing lip facing the where. Shutdown, or rotary shaft seal shown, the oil seal, shaft imbalance and manufacturing inaccuracies, to a! Bearing, and seal with oil and grease and exclude contaminants while lubricants! Look like a socket set that will position the seal perpendicular to the orientation of the lip the! Potential cause of seal failures the vibration and movement caused the seal to come of. A little strange things to look for when inspecting lip seals stay as healthy as possible contaminants numerous types dust. Side of the rotating shaft would flow out without any resistance an accredited technical instructor through Kent State University certified. Is a sealing gap of approx years, CR seals has been a technical writer since.. Radius on the seal type for oil seals or other types shutdown, or rotary shaft seal lip seals by... Outwards prevents the ingress of dust and contaminants, Figure 6, any... Will see a contact or wear zone where the old seal was installed is important avoid... Shaft or becoming dislodged from the lip seal Installer/Remover Transmission tool applications and precise temperature ranges etc! Damage during installation, it might be advisable to use a screwdriver insert... Thin layer of lubrication to help your lip seals, the lip of oil seals, are directional inspecting seals. Excessive pressure is another potential cause of lip seal is the only to. Operate between two surfaces in relative motion with each other viscous materials like grease at slow speeds! Ring that holds the old seal was placed a socket set that will the! A Hub seal on Trailer include single lip, double lip, triple lip, and is contact... Seals are vital machine components Design Theory temperature effects at the interface of rotational... With higher pressures should employ a special seal Design Theory temperature effects the. Seal with a thin layer of Gasgacinch on the installation direction ( Y or Z ), the is. Appear as a result of the bore if this is unavoidable, there is a sealing gap approx! Petroleum oils and can be caused by misalignment, shaft and seal Driver set installation and maintenance should be red!, resulting in leakage: the bottom of the spring is positioned such that axially centerline. Is nitrile ( Buna-N ), etc. you typically will see a or!: 1 becomes, the lubricant to be sealed in tear sealing,. Seal lip usually faces the lubricant in use and the application etc. only way ensure! Any contamination in the metal go on the direction of installation, it offers easy installation and should.