Lubricated Soft PTFE Yarn Packing

PTFE fiber packing in pure PTFE fiber packing but with   Greatly enhanced ability to seal high-speed shafts with the addition Of inactive and heat-resisting agents. It maintains the same features as FP-550F; resistance to chemical and  mechanical Attacks. Great dimensional stability. effective seal with low gland Pressures, etc.

As PTFE is low in thermal conductivity and big in thermal Expansion. frictional heat is not conducted to the outside of the stuffing box but trapped inside and damages the packing, thus this packing is not recommended for high speed pumps