Riegler Main Catalog Compressed Air Technology and Pneumatics Page 928
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INFORMATION / TABLES Sealing materials The most important sealing materials Abbreviations NBR FKM FPM Nitrile butadiene rubber Fluorinated rubber Fluorocarbon rubber Registered trademark Area of application Perbunan® In hydraulics and pneumatics, resistance against hydraulic oils, water glycol and oil-water emulsions, mineral oils and mineral oil products, animal and vegetable oils, petrol, heating oil, water up to approx. 70 °C, air up to 80 °C, butane, propane, methane, ethane. Viton® FPM is characterised by outstanding resistance against high temperatures, ozone, oxygen, mineral oils, synthetic hydraulic fluids, fuels, aromatics, many organic solvents and chemicals. The gas permeability is low and similar to that of butyl rubber. EPDM Ethylene propylene rubber Steam up to 200 °C, hot water, air up to 150 °C, diluted acids, not resistant to mineral oil products. CR Polychloroprene rubber, chlorinated rubber PTFE 928 Description Polytetrafluoroethylene Temperature -30 to 80 °C -25 to 200 °C Product groups Maintenance units, cylinders and control valves Screw connections / connectors Valves and shut-off devices Couplings Screw connections / connectors Cylinders and control valves 200 °C Check valves (on request) Couplings (on request) Neoprene® Resistant against silicone oils and greases, refrigerants, better ozone resistance, weatherproof and ageing resistance to NBR. -40 to 100 °C Solenoid valves Teflon® Resistant to almost all organic and inorganic chemicals (except for elemental fluorine under pressure or at high temperatures, fluorine halogen compounds and molten alkaline metal). - strong anti-adhesive properties - no water absorption (<0.01%) - low heat conductivity -200 to 260°C Valves and shut-off devices
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