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.
The oil seal gets its structural stability from an interior metal ring which serves as an inner skeleton. The outer skin is made of a more flexible material like nitrile rubber or other materials based on the physical environment of the seal. A spring on the lip of the seal supports the lip and keeps the lubricant from leaking. The lip construction is what blocks contaminants from outside.
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.


Overall, the 40mm rubber gasket is a versatile and reliable sealing solution that is widely used in various industries for different applications. Its ability to provide a tight seal, resist high temperatures and pressure, and dampen vibrations makes it a valuable component in ensuring the efficiency and reliability of industrial equipment and machinery. Whether in plumbing systems, automotive engines, or hydraulic systems, the 40mm rubber gasket plays a crucial role in maintaining operational efficiency and preventing costly leaks or contamination.
Tighten all fixings in sequence to the correct torque (consult a service manual or dealer if you are uncertain of the torque).





Power Steering Oil Seal:
Out-gassing
Oil seal: how to install it correctly



