This valve rubber seal is made of polyurethane material, which have the super advantage of oil resistant, corrosion resistance, abrasion resistance. And wild work temperature of -35ºC-100ºC, work pressure of 40MPa.
Polyurethane have long lifetime than rubber, it's wildly used for the consumables of oilfield fracturing cars, oilfield washing cars, cementing cement truck cement truck, piston pumps, mud pumps and other oil equipment.