This packing is made of kynol fiber with PTFE-lmpregnation and lunricant additive. it has very good mechanical properties combining softness and strength. Thermal stability, low heat expansion; High dimensional stability and superior pressure resistance even at elevated temperature; Good process-ability, easy to cut and fit; Outstanding chemical resistance particularly in acidic media; Excellent resistance to organic solvents, oil and fuels… Designed for abrasive media, and where contamination is not permitted. It has multiple uses in chemical plants and pulp and paper mills, and is regularly used in rotating and reciprocating pumps, washer journals, liquor pumps, refiners and digesters.