Pure PTFE fiber is impregnated with PTFE suspensoid. 344FDA is a food grade variant.
Interlock braided (1/8″ and 3/16″ plaited)
500 F (260 C)
1000 FPM (5 MPS)
Extreme chemical valve service. Braided into a dense packing, the very low coefficient of friction of PTFE reduces the need for adjustment after installation.