... we are specifically in supplying rubber coupling(rubber joint ,rubber elbow,rubber reducing joint,rubber duckvalve,rubber isolation pad ).We have ... absorption in service.4.The inner seamless high-pressure rubber joint independently developed by us prevents corrosive medium from etching ... .3(400)86.7(650)100(750)Applicable temp. C-15-+115 C, Speciality reach to -30~+250 CApplicable mediaAir. Compressed ...