Silca

Elastomer Seal for Disc Chuck #252

The classic SILCA 25.1 gasket has been replaced after more than 20 years in the market. The new 252 gasket utilizes a high tech and very red, fully synthetic elastomer base material rather than a carbon black filled natural rubber of previous designs. 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. In tests with a major disc wheel manufacturer, the new SILCA Disc Wheel Mini-Chuck with 252 gasket literally blew away the field by posting a blow-off pressure of 393 psi where other designs were unable to reach 120psi.

• Fully Synthetic Elastomer Base Material
• 5X the durability of traditional rubber materials
• New Two-Stage sealing geometry optimized for all Presta valve stems
• Fits all prior SILCA disc wheel adapters