NOK Oil Seals
Oil seals are used for automobile engines and geared motors, and
are designed mainly to prevent oil leakage from the end of a
rotating shaft, or dust intrusion from the outside air.
Oil seals serve to prevent the leakage not only of lubricants, but
also water, chemicals, and gas from "gaps" in machinery. Oil seals
also serve to prevent the intrusion of dust, soil and sand from the
Oil seals are indispensable sealing devices and are used in various
fields, including automobiles, aircraft, boats and ships, railroad
vehicles, construction machinery, farm machinery, petrochemical
plants, and electrical home appliances.
Japan's history of oil seals is, in effect, NOK's history of oil
seals. NOK has always produced stable, high-quality products based
on its unique principle of sealing.