NOK

NOK Corporation
NOK is Japan’s first oil seal manufacturer. Our functional parts, such as oil seals and o-rings of advanced technology in processed synthetic rubbers, are used not only in the automotive industry, but also in a wide variety of other industries. We have developed into the number-one reliable company in this field while leveraging the technology and know-how acquired since the star-up of operations.

NOK has created the products full of dreams. While NOK products vary from miniature to man-sized, they are all cared equally with the closest attention.
Starting from the field of oil seals, NOK has been changing its corporate image to the extend of having cutting-edge technology and development relating to aerospace engineering.

NOK’s products and technology are not outwardly visible. However, NOK is always with you. We are committed to providing the innovative products to perfectly meet our customers’ needs, while contributing to the global community. NOK’s dreams are infinite and ever lasting.

Concentrating Managerial Resources in Our Fields of Expertise to Become a Leading Parts Supplier
NOK is Japan’s longest established oil seal manufacturer. Our functional parts such as oil seals and mechanical seals, created through advanced seal technology, are not only employed in the automotive industry but are also used in a wide range of other industries. We have developed into the leading company in the field in terms of reliability by leveraging the technology and know-how we have accumulated since the start of operations.

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 outside air.

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.