... oil, ozone, weather, aging, refrigeration and chemical resistance, according to customer's requirements (eg. Tensile strength, elongation, compression set, high temperature ... and pressure changes, mechanical requirements, fluid interaction and dynamic life.These rubber diaphragm valve can be manufactured in any ... VITON),ACM,AEM,SBR,CR,PU etcHardness:30~90 Shore A Size Standard:AS/BS/JIS B /ISO /DIN/ ...