We supply kinds of braided PTFE packing sets with various fillers. specification between 3*3 and ... 40*40mm. The category are: Pur PTFE packing set is made of F4 raw material strip after knitting ... easily packed and dismantled.1, feature:Teflon knitting(dipping) packing set is made of F4 raw material strip after knitting ... , four-fluorin, carbon fibre, graphite, brass wires graphite packing set.