Choosing the correct oil seal application
- The superiority of NBR as a sealing material stems from its molecular structure, which combines the durability of butadiene with the chemical resistance of acrylonitrile. This blend creates a resilient elastomer that can operate effectively in applications spanning from automotive engines to hydraulic systems in heavy machinery. Its elastic properties ensure a tight fit, preventing leaks and prolonging the lifespan of machinery by minimizing maintenance requirements.
ERIKS type R (type A according to the DIN standard) is identical in shape to type M, but has a rubber outer case with metal reinforcement on the inside. The rubber creates a good seal in the housing, even if the housing has suffered minor damage or is not in its best condition for other reasons. The RST version has a dust lip. These types are often chosen to replace a type with a metal outer case because they are easier to install and can cope with minor damage to the groove, such as scratches.
- In engines, for instance, high pressure oil seals are crucial for maintaining proper lubrication and preventing oil leaks. They protect the crankshaft and other rotating components from contact with engine oil, ensuring optimal performance and longevity. In hydraulic systems, they prevent fluid loss, minimizing energy consumption and environmental pollution.
Car iridium spark plugs are a popular choice for modern vehicles due to their durability, high melting point, and superior conductivity. Iridium spark plugs offer enhanced performance and longevity compared to traditional copper or platinum plugs. The use of iridium in the electrode design allows for a smaller center electrode, promoting more efficient combustion and improved engine performance. Car iridium spark plugs are known for their ability to maintain optimal engine performance over an extended service life.
Valve Cover Gasket Set: Comprehensive Sealing Solutions

Synthetic Rubber Oil Seals - Styrene Butadiene Rubber oil seals, or just SBR oil seals, offer strong resistance to abrasions and lesions, making them an ideal seal for fast-moving machinery. With the ability to withstand extreme temperatures with its heat-aging qualities, they can be used in outdoor components. They are also seen as more cost-effective oil seals than natural rubber.
Rubber materials, operational temperature ranges and their compatibility with fluids
Rubber O.D. wall type Provides stable sealing performance around the seal O.D. surface.
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
Smear clean engine oil on the pulley sleeve and seal, then refit the pulley with the key and keyway aligned. Tighten the bolt to the correct torque (consult a service manual or a dealer if in doubt).
In the automotive industry, spark plugs are essential for the proper functioning of internal combustion engines. Whether in gasoline or diesel engines, spark plugs play a crucial role in igniting the air-fuel mixture, initiating the combustion process that powers the vehicle. High-performance spark plugs designed for specific automotive applications can enhance engine performance, fuel efficiency, and emissions control, contributing to the overall reliability and longevity of the vehicle.
However, the new variant also comes with less good properties. Namely less flexibility and less resistance during assembly. Most damages therefore occur during the installation of PTFE oil seals.



oil tank gasket.