Common valve material common valve sealing surface commonly used soft materials
Common valve material common valve sealing surface commonly used soft materials Ethylene propylene rubber (EPDM rubber) EPDM (EPM) FPM (Viton) PTFE (TFE) PFA Fs-4100 FEP (F46) PVDF (F2) PCTFE (F3) CLUB Flag Or Sports Activities FLAG juventus flag,leeds united flags,chivas flag,chelsea flags,newcastle united flag FlagKing Flags Manufacturing Co.,Limited , https://www.cnflagkings.com Serial number name Code Applicable temperature ℃ Suitable media 1 natural rubber NR -50 ~ 80 Salt, hydrochloric acid, metal coating solution, water, wet chlorine 2 Neoprene CR -40 ~ 80 Animal oils, vegetable oils, inorganic lubricants, and corrosive slurries that vary greatly in pH 3 Butyl rubber IIR -30 ~ 100 Anti-corrosion, anti-wear, resistant to most inorganic acids and acids 4 Nitrile rubber NBR -30 ~ 90 Water, oil, waste and so on 5 -40 ~ 120 Brine, 40% boric acid, 5% ~ 15% nitric acid and sodium chloride 6 Chlorosulfonated polyethylene synthetic rubber CSM -20 ~ 100 Good acid resistance 7 Silicone Rubber SI -70 ~ 200 High temperature, low temperature, good electrical insulation, chemical inertness 8 fluororubber -23 ~ 200 Dielectric corrosion better than other rubber, radiation, acid 9 Teflon -196 ~ 200 Heat-resistant, cold-resistant, resistant to general chemical solvents and almost all liquids 10 Meltable polytetrafluoroethylene ≤180 A variety of concentrations of sulfuric acid, hydrofluoric acid, aqua regia, high temperature concentrated nitric acid, a variety of organic acids, such as alkali 11 Poly FEP ≤150 High temperature has excellent chemical resistance, sunlight, weather resistance 12 Polyvinylidene fluoride -40 ~ 150 Chemical resistance is very good, excellent sunlight and weather resistance is the highest strength and the hardest fluorine plastic 13 Polychlorotrifluoroethylene ≤190 Good chemical resistance, excellent resistance to sunlight and weathering, continuous use at 198 ℃, higher strength and hardness than F46 and PTFE 14 Polyolefins PO ≤100 Resistance to various concentrations of acid, alkali, salt, and some organic solvents corrosion, erosion resistance, anti-static, non-toxic 15 Polypropylene PP -70 ~ 100 Excellent chemical resistance and stress cracking resistance, poor weatherability 16 Polyetheretherketone PEEK -46 ~ 300 Is a high-strength high-temperature resin with excellent mechanical properties and chemical resistance, excellent wear resistance and dimensional stability for valve seals 17 Polyphenylene PPL ≤300 Basic with polytetrafluoroethylene 18 Nylon (polyamide) NYLON ≤80 Alkali, ammonia