Single WHAT ARE THE TYPES OF OIL SEALS?
High oil resistance and good abrasion resistance

Polytetrafluoroethylene
Chemical resistant
Low coefficient of friction poor elastic properties not wear resistant if used by dynamic applications
The rubber material used in the oil seal should be selected based on the operational temperature and substance to be sealed.
Table 5 lists the major rubber materials along with their operational temperature ranges.
Note that it is necessary to check the compatibility with fluids.
<N.B.>
Extreme pressure additives are compounds added to the lubricant. They are activated by heat and chemically react against rubber, which deteriorates rubber properties. For this reason, it is necessary to check for compatibility with rubber materials.
Automotive Gaskets: Diverse Applications and Materials
In this kind of seal, wider tolerances are possible between the OD of the seal and the seal housing. Irregularities of the housing surface can be taken up by the resilient rubber layer on the outside of the seal. However, the rubber covered seal can be blown out under high pressure in a reciprocating application whereas, with a metal case, there is no such danger.
In conclusion, shaft oil seals are essential components in machinery and equipment that help to prevent leaks, protect critical components, and ensure smooth operation. Their importance cannot be overstated, and proper selection, installation, and maintenance are key to maximizing their effectiveness and prolonging their lifespan. With the right seals in place, machinery can operate efficiently and reliably, delivering optimal performance and productivity.

With minor lip
Type code


Shaft Surface Finish
Valve cover gaskets and head gaskets play pivotal roles in maintaining the proper functioning of the engine. The valve cover gasket prevents oil leaks and contaminants from compromising the lubrication and performance of the engine, while the head gasket ensures the proper sealing of the combustion chamber, allowing for efficient fuel combustion and preventing the mixing of oil and coolant. Both gaskets are critical for the overall efficiency, performance, and reliability of the engine.