- A high temperature oil seal is primarily constructed from materials that exhibit exceptional resistance to heat degradation. Materials like silicone rubber, fluoroelastomers, and carbon graphite are commonly used due to their excellent thermal stability and chemical inertness. They can endure temperatures ranging from -50°C to 300°C or even higher, depending on the specific compound used. The unique composition of these seals ensures minimal swelling, hardening, or softening, thereby preserving their sealing effectiveness over extended periods.
- In conclusion, 40mm rubber gaskets are a versatile and indispensable component in various industries. Their ability to provide an effective seal under a range of conditions makes them a popular choice for engineers and manufacturers. As technology continues to advance, the demand for high-quality rubber gaskets is likely to increase, further highlighting their importance in modern industry.

Fluorosilicone
Box: If a BX appears at the end of the part number, that oil seal will be in a box.
Double metal cased
Choosing Quality Spark Plugs for Vehicles
Notes
*1 ASTM: American Society for Testing and Materials
*2 For more details on fluid compatibility, please see the following:
Shaft Surface Finishing
Oil seals go by many names, such as shaft seals, dirt seals, grease seals, lip seals, and many other variations of these. They are essentially simple devices used in rotary shaft equipment to prevent lubricant from escaping and for excluding contaminants such as dust, dirt and water. An oil seal’s most important function, however, is that it protects every type of ball, sleeve and roller bearing in the rotating shafts. The seals also prevent the integration of two different fluids that shouldn’t mix, such as oil and water.