- An outer case, a body made of metal or provided with a rubber layer
- Another important consideration is the compatibility of the main bearing oil seal with the engine's oil. The seal must be designed to withstand the chemical properties of the oil, such as its viscosity and additives, without deteriorating. Using the wrong type of oil can cause the seal to fail prematurely. Therefore, it is essential to use the recommended oil type for your engine to ensure the longevity and reliability of the main bearing oil seal.
Auto gaskets are crucial components in vehicle systems, serving to create a secure seal between mating surfaces to prevent fluid or gas leakage. These gaskets are used in various automotive applications, including engines, transmissions, and exhaust systems. High-quality auto gaskets are essential for maintaining the integrity and efficiency of vehicle systems, contributing to optimal performance and reliability.

What materials are available?
First, an elastomer, most often nitrile, is vulcanised to a metal ring. This creates a stiffening effect that includes a specialised metal tension spring directly behind the sealing lip, keeping the oil seal firmly in place against the moving part.
However, rubber-cased seals do have limitations. For example, during installation, shear stresses can build up between the seal and housing wall, causing the seal to release itself.
Polyacrylate oil seals are a perfect compromise between quality and cost. They perform well with high temperatures and chemicals, but not as well as Viton oil seals. Polyacrylate has a temperature range of -25 degrees Fahrenheit to 300 degrees Fahrenheit. Due to their outstanding resistance to hot oil and oxidation, they are commonly used in automobile transmissions and hoses; however, they are also used for shaft seals, gaskets, and o-rings.
Types Of Oil Additives
A spring, the composition of which depends on the type