pneumatic supporter rubber cup
the damaged of packer rubber
cup-cup combined extrusion
chloroprene rubber neoprene rubber
chloroprene rubber：neoprene rubber
cyclo-rubber (= cyclized rubber)
Metal Rubber-Silicone Rubber Laminated Composite
金属橡胶-硅橡胶叠层复合材料
金属橡胶-硅橡胶叠层复合阻尼材料
neoprene rubber chloroprene rubber