The original press-on Presta gasket, updated. The SILCA 242 clicks onto the valve and uses the pump's own air pressure to seal tighter the harder you pump.

Highlights

  • Bright red high-performance elastomer, more than 5x the life of older rubber gaskets
  • Two-stage geometry seals on the valve stem and at the base of the core threads
  • Line pressure compresses the gasket onto the stem: higher pressure, tighter seal
  • Positive 'click' as it slips onto the valve

Pressure-assisted seal

Internal geometry turns line air pressure into clamping force on the valve stem, so the seal gets tighter as pressure climbs. SILCA says more than 20 companies worldwide have copied the design.

Compatibility & fit

Replacement gasket for SILCA Presta chucks that use the 242 gasket, including the SuperPista Ultimate. Presta valves only.

SILCA covers rubber, leather and gauge-related parts under its Limited Warranty: free from manufacturer defects for two years from purchase. Normal wear is not a defect. For warranty support, return the product to Tune Cycles and we'll manage the claim with SILCA's Australian distributor.
  • Replacement gasket for SILCA Presta chucks
  • Tested to more than 5x the life of carbon-filled rubber or Buna-N
  • Two-stage seal on the valve stem and core-thread base
  • Seals tighter as pressure rises
  • Positive click-on fit
Part numberSILCA 242
Valve typePresta
Seal designTwo-stage
ColourRed
SKU ECH-SI-005022
Brand SILCA