Oil Seal

Why Choose Us

One-stop Solution
After a period of development and accumulation, we not only broadened the product line, but also provided a series of solutions based on MDI, PPDI and NDI.

Professional Team
Our company has the first-class technical team. We can process and customize various polyurethane special-shaped parts according to the needs of domestic and foreign customers.

Our certifications
We passed OCCUPATIONAL HEALTH&SAFETY MANAGEMENT SYSTEM CERTIFICATION, QUALITY MANAGEMENT SYSTEM CERTIFICATION( ISO 9001) an so on.

Rich Experience
With the rich experience, professional technology and national influence of XinRuiTuo in the polyurethane industry, we strive to let more decision-makers in the country understand the advantages and benefits of high-quality polyurethane elastomers.

What is Oil Seal

An oil seal has two tasks: Keeping the lubricant in and keeping dirt and contaminants out of rotating components. This separation must be accomplished between surfaces in relative motion, usually a shaft or bearing inner ring and a housing. With correct installation, oil seals can also prevent seal leakage and maintain the lubricity of a bearing to ensure that the rotary shaft and its bearings remain fully functional.A typical oil seal consists of three common parts: an outer ring, the sealing element, and a spring. The exterior metal ring component provides strength and rigidity to the oil seal in the bore or recessed groove.

Oil Seal Well Service Pump Packing

oil seal Well service pump packing is a cloth structure with a molded rubber fabric. We can

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Plunger Pump Packing

Plunger pump packing. Anti-impact pressure. It can allow a larger extrusion gap. Products required

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Plunger Pump Packing Sets

Plunger pump packing sets are produced by XinRuiTuo in a wide range of materials to accommodate

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Plunger Packing Sets

Plunger packing sets can be used to Fracturing Pumps, Acidizing Pumps, Cementing Pumps, Positive

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Pump Packing Seals For Frac Pumps

Pump Packing Seals for Frac Pumps. Custom nonstandard size. Oil / corrosion resistance. wear

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Aramid Fabric Oil Seal

Aramid Fabric Oil Seal is a cloth structure with a molded rubber fabric. We can manufacture Black,

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Benefits of Oil Seal

Preventing Leakage, Protecting Machinery
A key function of oil seals is to prevent the leakage of lubricants which are essential for the smooth operation of machinery by reducing friction and wear between moving parts. When oil seals are properly installed, they ensure that the lubricant remains inside the machinery and prevents leakage onto the floor or into the environment. As well as conserving lubricant supplies, this ensures that the machinery operates at optimum efficiency and that sensitive moving components aren't severely damaged by excessive friction. Preventing leakage also offers important environmental benefits, reducing the risk of contamination through spillage.

Preventing Contamination
Oil seals are crucial in protecting components within machinery from external contaminants, such as dust, dirt, and moisture, which can cause corrosion, wear, and ultimately, premature failure. By effectively sealing the internal components from the external environment, oil seals extend the lifespan of these vital parts and reduce downtime and maintenance costs in the long-term. Protection is especially important in harsh or dirty working environments where the risk of contamination is high.

Enhancing Efficiency
The use of properly installed oil seals significantly improves the efficiency of machinery. By reducing friction and wear within the system, they ensure machinery can operate more smoothly and with less energy consumption. Reduced friction also means less heat generation, which is beneficial for maintaining the optimum temperature of the equipment. As well as achieving much-needed cost savings in terms of reduced energy use, oil seals enhance overall productivity as there are fewer periods of downtime or maintenance.

Prolonging Machinery Life
Finally, by minimising wear and tear, oil seals contribute significantly to extending the lifespan of essential machine components, such as bearings and shafts. Consequently, reduced downtime is likely as there are fewer breakdowns and maintenance requirements, translating into cost savings and more consistent production output.

Types of Oil Seal

Type 1 of oil seal-lip seal
A lip seal is a common type of oil seal. They consist of a metal shell, a flexible lip rim, and a spring that exerts pressure on the lip rim on the shaft. The flexible lip is usually made of rubber or other elastic material and is designed to form a tight seal on the shaft. Lip seals are used in a wide range of applications, including automotive engines, pumps and transmissions.

Type two of oil seal-V-ring seal
V-ring seals are used in applications where shaft rotation is high and contamination risks are present. They consist of a piece of V-shaped rubber or other elastic material. The V-ring is mounted on the shaft and forms a tight seal with the housing. V-ring seals are commonly used in automotive engines, agricultural machinery, and hydraulic systems.

Type three of oil seal-box seal
Cartridge seals, a common type of types of machine parts, are designed for applications where high pressure and high temperature are present. They consist of a metal shell, a sealing element, and a spring that exerts pressure on the sealing element. The sealing element is usually made of PTFE or other high performance material and is designed to form a tight seal on the shaft. Box seals are commonly used in hydraulic cylinders, pumps, and motors.

Type four of oil seal-mechanical seal
Mechanical seals are used in applications where high pressures and temperatures are present and where there is a risk of contamination. They consist of two mating surfaces pressed together by springs. Mating surfaces are usually made of ceramic, carbon, or other high performance materials and are designed to form a tight seal with the shaft. Mechanical seals are commonly used in pumps, compressors, and other rotating equipment.

Type five of oil seal-oil bath seal
Oil bath seals are used in applications where shaft rotation is low speed and contamination risks are present. They consist of a metal shell, a sealing element, and a spring that exerts pressure on the sealing element. The sealing element is usually made of rubber or other elastic material and is designed to form a tight seal on the shaft. Oil bath seals are commonly used in farm machinery, construction equipment, and other heavy-duty applications.

Application of Oil Seal

Automotive Industry
One of the primary applications of Oil Seal lies in the automotive industry. These seals are commonly used in engines, transmissions, and drive shafts to prevent oil leakage. By maintaining proper lubrication and preventing the entry of contaminants, Oil Seal extend the lifespan of automotive components, reducing maintenance costs and enhancing overall performance.

Manufacturing Industry
In the manufacturing industry, Oil Seal find extensive application in various types of machinery, such oil seals contribute to increased productivity and cost savings.

Aerospace Industry
The aerospace industry demands stringent standards for reliability and safety. Oil Seal are utilized in critical aircraft components, including passenger safety during flights.

Marine Industry
The marine industry faces unique challenges due to the harsh conditions encountered at sea. TC oil seals are employed in various marine applications, including engines,. By improving the durability and reliability of marine machinery, Oil Seal contribute to optimal performance and extended service life.

Power Generation Industry
In power generation plants, Oil Seal are used in turbines, generators, and other rotating equipment downtime, resulting in uninterrupted electricity supply and reduced maintenance costs.

Common Materials for Oil Seals

Nitrile Buna-N 70

NBR is compatible with numerous environmental conditions and is also relatively cost-efficient, which makes it one of the most popular and best-suited materials for the industry. Nitrile works well in the -30° to 250° F range and when exposed to anything from water and hydraulic fluids to gas, silicone, vegetable, or animal oils.

Fluoropolymer

FKMs, or Viton®, are perfect for high-temperature applications up to approximately 400° F. Additionally, they feature low compression characteristics. Seals of this material are highly resistant to solvents, gas, and petroleum or transmission oils, so they are a good fit for applications around these materials.

Silicone

Vinyl-methyl-silicones (VMQs) maintain performance in temperatures from -140° to 392° F. In addition, silicone is resistant to adverse weather conditions, light, and ozone. The healthcare and food industry sectors, as well as pneumatic and hydraulic systems, often use silicone.

Polyacrylate

Polyacrylate is a good combination of quality and cost benefits. It is highly resistant to oxidation and heated oil, withstanding temperatures from -25° F to 300° F. This material has applications in vehicle transmissions, shaft seals, O-rings, and more.

How to Choose Oil Seal

Shaft Speed
The maximum allowable shaft speed is a function of the shaft finish, runout, housing bore and shaft concentricity, type of fluid being sealed and the type of oil seal material.

Temperature
The temperature range of the mechanism in which the seal is installed must not exceed the temperature range of the seal elastomer.

Pressure
Most conventional oil seals are designed only to withstand very low-pressure applications (about 8 psi or less). If additional internal pressure is present or anticipated, pressure relief is necessary.

Shaft Hardness
Longer seal life can be expected with shafts having a Rockwell (RC) hardness of 30 or more. When exposed to abrasive contamination, the hardness should be increased to RC 60.

Shaft Surface Finish
Most effective sealing is obtained with optimum shaft surface finishes. The sealing efficiency is affected by the direction of the finish tool marks and the spiral lead. Best sealing results are obtained with polished or ground shafts with concentric (no spiral lead) finish marks. If you must use shafts with spiral finish leads, they should lead toward the fluid when the shaft rotates.

Concentricity
When the bore and shaft centers are misaligned, seal life will be shortened because the wear will be concentrated on one side of the sealing lip.

Shaft and Bore Tolerances
The best seal performance is achieved when close shaft and bore tolerances are present. Other factors include shaft eccentricity, end play and vibration.

Oil seal: How to Install it Correctly

Select the correct oil seal size

By first finding out the dimensions of the inner and outer diameters and the height of the bore, you have all the data for the correct size of the oil seal. Of course, the oil seal must also be able to withstand the pressure, temperature and medium it is exposed to within the seal during the manufacturing process. You can read more about this in our oil seal selection guide.

Check the materials and surfaces

Before installing the oil seal, it is essential that the oil seal, shaft and bore are not damaged. So, ensure that the surfaces the oil seal comes in contact with do not have any sharp points or burrs. The sealing lip is fragile, so any minor damage to it can cause leakage. Also, make sure the oil seal is clean. Even a small amount of dirt can cause a leak. Therefore, never use a pre-used oil seal for the assembly.

Use the right assembly tools

Assembling the oil seals is only possible with the right assembly tools. Due to the high risk of damage during assembly, it is important that you have tools with which you can work carefully. A bearing fitting tool set is ideal.

Provide the shaft with a ramped edge

Because the inner diameter of the oil seal must be stretched during assembly, it is necessary for the shaft to possess a ramped edge. The angle at which the ramped taper should be chamfered is 30° a 50°. If a flange or keyway is present on the shaft, it is best to use a bushing. The bore should also have a chamfer of 30° over at least 1 mm on the ramped side. Be sure to round off the edges properly in the process.

Assembling the oil seal

If you have prepared the assembly properly, then you are already largely on your way to a successful installation. The assembly of the oil seal itself is not complex. It is, of course, important that it is done properly in view of the longevity and reliability of the seal.

How to Maintain Oil Seal

01/

Protecting from dirt and impurities
Dust, dirt and debris are often the primary reasons for the failure of a seal. When a Oil Seal is used in high pressure equipment, even the smallest particle can make a gap in between the seal and the equipment. This results in the access of impurity or the leakage of fluid or gas. So the best way to ensure that no dust particle pollutes the oil seal is to store it in a container or a sealed bag and keep it away from a place where dust and impurities exist.

02/

Protecting the shaft
Keep the shaft of the end application dust-free and protect it from any kind of damage. This will increase the performance of oil seals as well as the equipment where the former will fit into. If there is the slightest dent or chip in the shaft, the seal will work not function properly and the contaminants will infiltrate into the equipment. To fix this problem, it is required to wrap the shafts in mesh rubber screen or any other protective material and keep them in their own compartments.

03/

Keeping the surface clean
While taking the oil seals and from a storage bag, make sure that they do not get dirty. The surface where the seal will come into contact must be cleaned properly. Some oil seals that have greasy features are very vulnerable to dust. So, what you can do is separate the seals from other products and clean surfaces of bins, tables, conveyors, etc separately to minimize the chances of the oil seals getting dusty.

04/

Maintaining oil accessories
The accessories used with Oil Seals are to be protected as much as the former. Installation tools, grease container, etc. are to be stored in a sealed container when they are not in use. This will lower the chances of infiltration of impurities. Also, make sure that the installation tools have no dented edge because this can affect the oil seal at the time of the installation process.

Our Factory

Shandong XinRuiTuo Precision Industry Co., Ltd integrates scientific research, development, production, sales and service. It is a modern technology company dedicated to the production of polyurethane polymers. The company has a professional Research and Development team and professional testing equipment. The company registered capital is 21 million and annual output value is around 80 million. The factory area is around 10,000 square meters. The company's productivity can reach 20,000 tons each year.The main products are: polyurethane sieve plate, pump piston, polyurethane sealing ring, roller coaster wheel, monorail wheel for coal mine, valve rubber, cotton picker accessories, superior rubber pad on die cutting machine, Polyurethane cylinders, etc. In addition, our company has the first-class technical team. We can process and customize various polyurethane special-shaped parts according to the needs of domestic and foreign customers.

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FAQ

Q: Should you lubricate oil seals?

A: While the outside diameter of metal-cased seals can be lightly lubricated to ease installation, the outside diameter of rubber covered seals should always be lubricated. Seals with an auxiliary, contacting lip can also be filled with grease between the sealing lip and auxiliary lip to reduce frictional moment.

Q: What is the difference between an oil gasket and an oil seal?

A: Gaskets seal a connection between two components or flanges that have flat surfaces, while seals are used between engine parts, pumps, and shafts that rotate. Gaskets are used wherever a union or flange is required to prevent leaking. Gaskets are most commonly used as static seals.

Q: How do you store oil seals?

A: Light: Direct sunlight and artificial lights that have strong ultraviolet content are harmful to materials like plastic, rubber etc. It is recommended to store seals in opaque containers away from direct light. To ensure no direct sunlight comes through the windows it's advised to cover them with red or orange screens.

Q: What is the life of oil seal?

A: However, on average, oil seals are expected to last for thousands of hours of operation under normal conditions. In some applications, where extreme conditions or aggressive environments exist, seal replacement intervals may be shorter.

Q: How do you clean oil seals?

A: You can soak the parts in some mineral spirits and finish up with some brake cleaner/contact cleaner and a tooth brush or simular brush. the rubber seals should stand up to the solvents but If the seals seem to be damaged you will have to replace them.

Q: How to stop oil seals from leaking?

A: One of the easiest ways to fix the leak yourself is to use a stop leak additive or high mileage oil blend. Such products can soften and condition your car's rubber seals to stop and prevent further automotive leaks. It may take up to a few hundred miles of driving before the leak is completely sealed.

Q: What is an oil seal?

A: Oil seals are used to protect shafts and bearings from ingress of dirt and foreign matter and egress of oil or grease. An oil seal generally consists of an outer circular metal part and an inner flexible member that does the actual sealing and is bonded to the metal part by chemical adhesive agents.

Q: Is an oil seal a lip seal?

A: Seals serve to keep lubrication or other liquids inside and contamination outside of the joint. A lip seal is also known as an oil seal or a rotary shaft seal. Oil seals or rotary shaft seals and mechanical seals are designed for moving parts.

Q: What is another name for an oil seal?

A: lip seals
Shaft seals, dirt seals, grease seals, lip seals, and many other names are only a few of the many names given to oil seals. They are simple components used in rotary shaft machinery to keep oil from leaking and impurities like dust, dirt, and water out.

Q: What are the two types of oil seals?

A: Both types of oil seals play crucial roles in various applications. Rubber cased oil seals are often used in automotive engines, hydraulic cylinders, fuel systems, and more. Metal cased oil seals find their use in rotating equipment like pumps, motors, and gearboxes.

Q: Why is oil seal damaged?

A: Cause: High fluid temperature, deterioration of fluid or problem with the compatibility of the seal to the fluid. Cure: Lower the oil temperature, renew fluid or change to a different seal compound. The dynamic face of the seal is worn to a glossy mirror-like finish.

Q: What is the difference between oil seal and grease seal?

A: Oil Seals are used to seal around a rotating shaft and keep an oil-based lubricant inside an axle, engine, etc. Grease seals are used to seal more viscous grease lubricants in rotary shaft applications.

Q: What is the difference between shaft seal and oil seal?

A: Shaft seals, also known as oil seals, are devices that prevent fluids from leaking out of machinery. They're typically made from a rubber or plastic material and are designed to fit around the shaft to create a barrier that keeps oil, grease and other fluids contained.

Q: What's the difference between a seal and a gasket?

A: Gaskets are used to seal two components or flanges that have a flat surface. Seals are used to describe parts that are used between engine parts, pumps and shafts that rotate. Gaskets are used as static seals. When a seal is used between engine parts, pumps and shafts that rotate, it is described as a dynamic seal.

Q: What is a lip seal also known as?

A: Lip seals are ring-shaped elastomeric seals that are designed for use around a shaft. Also known as rotary seals, they are characterized by the presence of a lip. Lip seals aren't solid rings. Rather, they feature a lip. This lip allows them to create a secure fit around shafts.

Q: What is the most common oil leak?

A: The most common culprits are worn-out gaskets and deteriorated seals around rotating parts like the crankshaft. Over time, these seals can wear down and let oil escape. Other causes for oil leaks include a faulty oil filter or a loose drain plug.

Q: What is the difference between an oil gasket and an oil seal?

Q: How many oil seals does a car have?

A: The two major seals in your engine are the front and rear end oil seals, which are located at either end of the crankshaft, and connect to the flywheel at one end and the fan at the other. They are also found on, among other places, the valves in the combustion chamber of your engine.

Q: What is the best oil seal?

A: The most commonly used materials in oil seals are Buna (Nitrile) and Viton®. Buna (Nitrile) oil seals are the most widely used elastomer in sealing. Nitrile oil seals have great resistance to petroleum oils and fuels, mineral oils and greases, hydraulic fluids, water, steam, and alcohol.

Q: Can you drive with a oil seal leak?

A: Can You Drive a Car With an Oil Leak? An oil leak can be a sign of a more serious issue, so if you notice oil leaking from the engine, it's best not to drive the car. As the oil continues to leak, a low oil level could damage the engine. If you must drive, keep your trips to 10 miles or less.