... installment 2strong absorption 3.25years professional experience flexible rubber couplings 25 years profession manufacture flexible rubber couplings1.easy installment2strong absorption3. ... frbrica4FlangeQ235A,stainless steel5Strengthening ringQ235A6Limit blockQ235A,stainless steel7Limit barQ235A,stainless steel,35#8NutQ235A,20#,stainless steelpower plant used flexible rubber coupling technical data ...