8 tips to keep in mind when installing or replacing oil seals
- One of the key attributes of the A7TJC spark plug is its ability to deliver a robust and reliable spark. This is made possible by its platinum or iridium center electrode, which not only enhances durability but also improves ignitability. These precious metals have higher melting points and superior electrical conductivity, ensuring a longer lifespan and reduced maintenance requirements.
Proper installation and maintenance of oil seals are essential to ensure optimal performance and longevity. Before installing a new oil seal, it is important to clean and inspect the shaft and seal housing for any damage or debris that could affect the sealing performance. Additionally, applying a thin layer of lubricant to the seal lip can help improve sealing efficiency and reduce friction during operation.
The temperature range of the mechanism in which the seal is installed must not exceed the temperature range of the seal elastomer.
- The 12% oil seal is one of the most popular sizes in use today. This seal is typically made from materials such as rubber, silicone, or polyurethane, which are known for their excellent resistance to heat, cold, and chemicals. The 12% oil seal is often used in automotive applications, such as in the engines, transmissions, and differentials of cars, trucks, and motorcycles. Its durable construction and reliable performance make it a favorite among mechanics and engineers.
- One of the key factors that determine the performance of a piston oil seal is its compatibility with the engine's oil
3. Poly acrylate
Standard 3760/3761

Oil seals are protective elements. They prevent the mixing of water and lubricants within a machine, thereby ensuring optimal machine functionality. Also, oil seals help to prevent lubricant leakage at high pressure like when the machine is working at an extremely high rate. Not only that, radial shaft seals stop foreign components from entering a machine. This is because they can contaminate the lubricant and even damage the machine.
• Hydrogenated nitrile rubber
Oil seal materials
Rubber type


An oil seal normally consists of three basic components: the sealing element, the metal case and the spring. The purpose of the sealing element is to stop the fluid from leaking between the shaft and housing. The metal case will give rigidity and strength to the seal while it is being held in the bore or recessed groove. The garter spring ensures constant pressure and maintains the radial force to the shaft, flattening the sealing edge to a defined width. The garter spring maintains the radial force exerted by the sealing lip around the shaft surface. All materials must be selected depending on the environment in which the oil seal will function.
3. Dust and debris are common reasons for oil seal failure.

One way to recognize an improperly installed seal is by checking whether or not there is uneven shearing of the rubber after use. If this is evident, adjust by aligning the installation tools properly before pressing the seal into place.
1. Sealing Element
The metal case is the exterior (or frame) of the oil seal, the principal function of which is to give rigidity and strength to the seal. The material of the case must be selected depending on the environment where the seals are to be used. Often the metal case is covered by the same rubber material used in the sealing element, which also helps seal the exterior of the oil seal in the housing bore. Common case material types are: