2025-silca-242-gasket-for-presta-chucks

2025 Silca 242 Gasket For Presta Chucks

Silca
Availability:
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$9.00
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Weight:
2.00 LBS
Width:
10.00 (in)
Height:
10.00 (in)
Depth:
6.00 (in)
Current Stock:
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Description

The Iconic SILCA 24.1 gasket is the heart of the press-on Presta chuck. The current 242 gasket utilizes a high tech and very red, fully synthetic elastomer base material.

This unique bright red gasket borrows from industries which require air-tight seals in the harshest of environments. It 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 the pressure, the tighter the seal. This design is so iconic we've found more than 20 companies world-wide making pump heads and gaskets copied from this, but none of them can come close to the precision and technology of the SILCA 242.

Specifications

  • Synthetic elastomer base material
  • 5X the durability of traditional rubber
  • Two-Stage sealing geometryoptimized for all Presta valve stems
  • Pressure amplifying dome geometryuses air pressure to clamp valve stem
  • Fits all bell-shaped SILCA Presta heads
  • 9mm H x 21mm OD