... ISO9000:2001 and TS16949 3.Inner:steel, outer: foam and soild rubber seal All kinds of rubber seal type: 1.Sponge/Foam Extrusion ... 5.All these can be with metal insertion. Xin'ao Rubber Seal Features: Widely used in industry,agriculture,including building, ... Material: EPDM, Nitrile(NBR), Neoprene(CR), Silicon, Viton, SBR, Natual rubber and various other basic raw materials.Hardness: From 35 to ...