Phenolic Screw Threads with PTFE-Faced Rubber Liner - 38-430 - 45066C-38

Cap is made of a special black phenolic material (mineral filled) to withstand the effects of repeated autoclaving. With a PTFE-faced rubber liner. Liner/cap bond was selected to retain its adhesive properties during autoclaving. This cap is identified in ASTM Specification E982, Class B requirements.