Silca Elastomer Seal for Disc Chuck #252
Silca Elastomer Seal for Disc Chuck #252, Replacement elastomer gaskets for old or new SILCA pumps that offer a longer life expectancy than traditional rubber.Utilizes a high-tech, fully synthetic elastomer base materialFeatures five times the durability of traditional rubber materialsNew Two-Stage sealing geometry optimized for all Presta valve stemsFits all older SILCA disc wheel adapter versions (though at reduced max hands-free pressure)New Two-Stage sealing geometry optimized for all Presta valve stems