RS-5019 Asbestos PTFE packing is made of white asbestos fiber cords impregnated with PTFE dispersion.(addition of lubricant is optional.) It is soft in texture and suitalbe as the sealing of pumps for liquidated chemical,However,packing impregnated with lubricants is recommended for use with reciprocating pumps or for the sealing in places where linear velocity is up to 10 m/s. the working temperature is from -100°C - +260°C,with pressure 100 bar .