... Hige quality 3.Reasonable price 4.Partner:FLSMidth Flexible Rubber Joints1.Characteristic of the producta:Based on the ... high elasticity,high air-tightness and medium resistance of rubber and the flexibility and heat resistance of fiberglass ... fabric2-4 layer4Inner sleeveQ235,A31set5Outer sleeveQ235,A31set6Seal ringNatural rubber,synthetic rubber1 pieces 3.Quality Control ISO9001:2008,ISO14001:2004, ...