... lubricating 2,specification:0.5mm-30mm 3,wide temperature zone PTFE tube is made to thick wall with virgin powder for ... seats, selflubricating bearings, piston rings etc.Hose tube made from PTFE powder has the performance as wide service temperature range, high ... -corrosive, non-stick, and will be long life service.Inside: PTFE hose, for high and low temperature used, anti-corrosive, non ...