Notes
1) ISO: International Organization for Standardization
2) 2) JIS: Japanese Industrial Standard
Aflas is created from fluoroelastomers (FKM), providing the following benefits:


Fundamental things and its importance

MH: O.D. wall is a rubber material
HM: O.D. wall is a metal case
MH(S)H: O.D. wall is metal with a reinforced inner metal case
Oil seal installation
Automotive gaskets encompass a wide range of sealing components used in vehicles, including exhaust gaskets, intake manifold gaskets, and more. These gaskets are available in various materials, such as rubber, silicone, and metal, each offering specific properties suited for different applications. The selection of high-quality automotive gaskets is crucial for ensuring reliable sealing solutions that contribute to the overall performance and safety of the vehicle.
4. Install the Oil Seal
When selecting rubber valve cover gaskets, it is important to prioritize quality, durability, and compatibility with the specific vehicle model. High-quality gaskets should be designed to withstand the heat and pressure within the engine, providing a reliable and long-lasting seal. Choosing reputable suppliers and manufacturers known for producing high-quality rubber valve cover gaskets is crucial to ensure the reliability and longevity of these critical components.
Just like pressure. The temperature capability of the oil seal shouldn’t be lesser than the temperature of the application. This is because any significant increase or even decrease in the temperature will affect the functionality of the oil seal. PTFE seals have the highest temperature capability, making them useful for applications that demand harsh weather and elements.
Place the ruler or straight-edge on edge diagonally across the head and block and look for gaps showing light anywhere between the ruler and block.