Silca Elastomer Seal for Presta Chuck #242

Description

Replacement elastomer gaskets for old or new SILCA pumps that offer a longer life expectancy than traditional rubber.

FEATURES

• Utilizes a high-tech, fully synthetic elastomer base material
• Features five times 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
• New Two-Stage sealing geometry optimized for all Presta valve stems
• Pressure amplifying dome geometry uses air pressure to clamp valve stem