... Tubes Materials: Bronze + PTFE (Teflon) Method: Press Molding Shape: by Drawing Bronze Filled PTFE (Teflon) Sleeves / Tubes, Bronze percentage ... %, etc.Bronze Filled PTFE (Teflon) Sleeves / Tubes, are manufactured by molding method with filled ptfe resin. Filled PTFE resin is ... manufactured by compounding ptfe granular resin with fillers ( Bronze ) of ...