... Environmental protection material 4. Anti-corrosion PTFE has a wide range of practicable temperature and has the ... over the diameter 50mm are manufactured by molding.Specifications1) SFFBN: a) Diameter (mm): 1, 2, 3, 4, 5 ... 6, 7, 8, 9b) Length (mm): >2,0002) SFxBN:a) Diameter (mm): 4, 5, 6, 7, 8, 10, ... 100 - 600PTFE has a wide range of practicable temperature from -180 ~ 260°C and a wax-like surface to ...