From the oil-free PTFE packing Pure PTFE fiber woven,withoutr PTFE emulsion and lubricating grease processing.Result is a flexible solid woven and adjustable,so with the shaft,stuffing box can be a good match with excellent corrosion resistance,good self-lubricating and anti-paste nature,is recommended for chemical,food,and other non-occasions to allow the operation of pollution can be used in addition to soluble alkali metal other than all chemicals occasiona.Equipment:pumps,valves,flanges.