Understand Seal Rings & O Rings
These are used on automotive engines and geared motors primarily to prevent oil leaks at the ends of rotating shafts and the intrusion of dust particles from outside.
Types of Seals
An O ring is a type of gaskets with an O-shaped cross section, preventing leakage of fluids and dust. We offer a variety of rubber materials suitable for various use conditions.
An O ring is a type of gaskets with an O-shaped (round) cross section, which is seated in a groove and compressed appropriately to prevent the leakage of various fluids, including oil, water, air and gas.
Utilizing synthetic rubber materials suitable for various purposes, we offer O rings that withstand extended periods of use and use under harsh conditions.
'O' Rings
An O ring is a type of gaskets with an O-shaped cross section, preventing leakage of fluids and dust. We offer a variety of rubber materials suitable for various use conditions.
An O ring is a type of gaskets with an O-shaped (round) cross section, which is seated in a groove and compressed appropriately to prevent the leakage of various fluids, including oil, water, air and gas.
Utilizing synthetic rubber materials suitable for various purposes, we offer O rings that withstand extended periods of use and use under harsh conditions.
Seal Rings
The word “oil seal” is used to describe these products that seal oil. In addition to preventing fluids, such as lubricants and water, and gases used in mechanical products from leaking at their “gaps,” they also keep dust, dirt and sand particles from intruding from outside.
Seals are an indispensable means for sealing machines in a variety of fields, including automobiles, airplanes, ships, train cars, construction machines, agricultural machines, petrochemical plants, and home appliances.
The history of NOK oil seals is synonymous with the history of oil seals in Japan. The products we export worldwide deliver consistent quality which is founded on our unique “sealing theory.”
Basic Construction
Functionality You Will Love
01
Design
Oil seals are made by bake-adhesioning the synthetic rubber part that makes up the seal lip to a metal ring. The embedded “spring” provides just the right amount of hold on the shaft, making it possible to seal moving parts.
02
Function
Oil seals for rotating applications that are properly installed suck in a small amount of air from the atmosphere, and this suction phenomenon keeps oil from leaking outside.
03
Movements
As for oil seals for reciprocal movements, the difference in oil film thicknesses between the push and pull strokes constitutes the oil leakage. As such, the oil seal’s contact pressure profile (maximum contact pressure gradient) is determined so as to achieve optimum oil film thicknesses.
