... ,rubber seals,rubber strip, tubing, cord or custom rubber extrusion shapes for Auto industry,mechanical,construction,etc ,the extrusions also can be ... Nitrile(NBR), Neoprene(CR), Silicon, Viton, SBR, Natual rubber and various other basic raw materials.Hardness: From 35 to 85 Share ... :-50 to +260 Degrees Centigrade (up to 300C for short periods).Various color are available,like black,red,white,blue.etc ...