... 3.length 900mm,1m,2m 4.wooden cast package PTFE rode Polytetrafluoroethylene [PTFE, F4] is one of the best corrosion ... sealing washer is made from optional suspension polymerization PTFE resin molding. PTFE compared with other plastics are resistant to chemical corrosion and ... products, such as hydraulic hoses, seal parts, high pressure oil pipes, flexible metal hoses, O-rings and hydraulic hose ...