What is the approximate hardness of fluororubber gaskets?

The hardness of fluororubber gaskets typically ranges from 70 to 90 Shore A, but the specific hardness can vary depending on the fluororubber formulation, application, and manufacturing process.

 

Generally, fluororubber gaskets used in high-temperature, high-pressure, and chemically corrosive environments have relatively higher hardness, usually around 80 to 90 Shore A. This is because higher hardness provides better sealing performance and heat resistance, allowing them to maintain good sealing performance and prevent media leakage even under extreme conditions.

 

However, in applications requiring higher flexibility of the seal, such as those needing to adapt to complex sealing surfaces or requiring a certain degree of elastic deformation, the hardness of fluororubber gaskets may decrease to 70 to 80 Shore A. Lower hardness allows the seal to more easily adapt to irregularities in the sealing surface, improving the reliability and sealing performance.

 

Furthermore, the hardness of fluororubber gaskets can also be affected by the type and content of fillers. Adding an appropriate amount of filler can improve the hardness and strength of fluororubber, but excessive filler may reduce the elasticity and fatigue resistance of the seal.