Features: Teflon ball valve seat and stem gasket is made of suspension polymerization of PTFE resin molding. PTFE and other plastics compared with chemical resistance and excellent temperature characteristics. Uses: Seat and stem seal. PTFE, ballvalve seat is manufctured by molding method with PTFE granular resin.PTFE, Compared with other plastics, has a superior properties against chemicals and temperature. Specifications Nominal Seat Stem Gasket Outer Diameter Inner Diameter High Diameter Inner Diameter High 15 24 15 5 20 12 4 23 15 4.5 14 9 4.8 20 32 20 5 20 12 4 28 20 5 17 11 5.5 25 36 25 5.5 24 16 5 22 14 4 32 44 32 5.5 24 16 5 28 18 5 40 54 40 6 30 20 5 29 18 5 50 64 50 6.5 34 24 5 29 18 5 65 95 65 14 38 28 5 80 105 80 14 38 28 5 115 80 16 100 132 100 16 48 32 6 150 190 150 22 50 38 6 Note: Special specifications can be based on user Need to produce the main technical indicators Project Name Unit Index Performance density g / cm3 2.10-2.30 Tensile strength ≥ MPa 14.0 Elongation at break ≥% 140