- All rubber or polymers
- An oil seal's primary function is to keep lubricant inside a piece of equipment while preventing contaminants from entering. This may sound simple, yet the consequences of failure are profound, ranging from reduced efficiency to catastrophic machinery breakdown. Herein lies the significance of the NBR oil seal, which withstands extreme temperatures and chemical exposure, maintaining its integrity where other materials might falter.
Regular maintenance and inspection of the 25x47x7 oil seal are also important in preserving its performance over time. By checking for signs of wear or damage and replacing the seal as needed, machine operators can ensure that the seal continues to provide reliable protection against oil leaks.
NNK belongs to NOK-CN factory, we have more than 150 employees and strong delivery capacity. Our technicians are experienced, we have been committed to the sealing industry for decades, and have independent research and development capabilities. Our metal shells are produced by ourselves, and the quality is guaranteed. Our rubbers are all imported materials, and each product is strictly tested.If you need please contact us.
Polytetrafluoroethylene
Chemical resistant
Low coefficient of friction poor elastic properties not wear resistant if used by dynamic applications

rubber edge gasket.
Furthermore, neoprene foam gaskets offer superior insulation properties
. The foam material has a low thermal conductivity, which helps to reduce heat transfer and maintain temperature control in applications where thermal insulation is critical. This makes neoprene foam gaskets suitable for use in HVAC systems, refrigeration units, and other applications where thermal management is essential.neoprene foam gasket

Oil Seals, also known as fluid seals, grease seals, dirt seals, shaft seals, or lip seals, help to seal the gap between static and moving components in machinery and equipment. Oil Seals used in rotating applications are known as rotary seals.
The intake valve cover gasket is a vital component that ensures the proper sealing of the intake valve cover, preventing oil leaks and maintaining the integrity of the engine's intake system. This gasket is essential for maintaining the efficiency and reliability of the engine, contributing to optimal engine performance and longevity.
Clean all dirt and oil from the housing, and set the new seal in place with its open (spring) side towards the engine.
Oil seals are widely used as sealing devices for machines.
JTEKT's oil seals are described in our catalog, Oil Seals & O-Rings.
However, the catalog uses a large number of technical terms and is very long, so many people seem to have trouble handling it.
Therefore, this series of columns will summarize the following in order:
• The structure, functions, and types of oil seals
• How to select the right oil seal
• Handling of seals, and causes and countermeasures for oil seal failure
Fluorine rubber (FKM, Viton™)


Standard 3760/3761