Necessary to check compatibility with fluids
(See *2)Standard 3760/3761
In addition to preventing oil leakage, the piston oil seal also helps to reduce friction between the piston and the cylinder wall. This is important for maximizing engine efficiency and prolonging the life of the engine components. By reducing friction, the seal helps to improve fuel economy and reduce wear and tear on the engine.
piston oil sealSpring
Table 5: The major special seals, their shapes, and their features
Standard 3760/3761

hard rubber gasket. They can be compressed between two surfaces without losing their sealing properties, ensuring a leak-free connection. This feature is crucial in applications where a consistent and reliable seal is critical for the proper functioning of equipment.
Runout
Oil seals are commonly used in engines, gearboxes, and other rotating machinery to prevent the leakage of oil from shafts and bearings. They are typically made from rubber or elastomeric materials that are resistant to oil and heat. The seal is installed in a housing or bore that is larger than the shaft, and it is pressed against the shaft to create a tight seal.
Fluid Types - Various oil seals are able to withstand interactions with oils, fuels, grease, water and more. Knowing what type of fluid the rotary shaft seal will be in constant contact with will ensure the longevity of the seal and surrounding components.

An oil seal consists of:
TOYOTA / NISSAN/ HONDA / Peugeot