Silca Gasket for Presta Chuck 242
The Iconic SILCA 24.1 gasket has been updated and improved after more than 30 years in the market. The new 242 gasket utilizes a high tech and very red, fully synthetic elastomer base material rather than a carbon black filled natural rubber of previous gaskets. This unique bright red gasket borrows from industries which require air-tight seals in the harshest of environments, and tests to a life expectancy of more than 5X the carbon filled rubber or Buna-N materials used previously.
New Two-Stage seal geometry seals on both valve stem and at the base of valve core threads resulting in a more positive seal and improved durability. The new gasket slips onto the valve stem with a satisfying click while unique internal geometry actually utilizes line air pressure to compress the gasket onto the valve stem. The higher you pump, the harder it grips the stem.
- Fully Synthetic Elastomer Base Material
- 5X the durability of traditional rubber materials
- New Two-Stage sealing geometry optimized for all Presta valve stems
- Pressure amplifying dome geometry uses air pressure to clamp valve stem
- Made in USA
This gasket only works with older 30.0/30.2 and the new 17-4 Stainless Presta only chucks