... .material:NR, SBR, CR, SIL, HN.BR, FSIL,etc Age resistance Elastic cushion of Type X 1.Used with Elastic cushion ... : vulcanization tester, tensile tester, rubber durometer, imaging size projector, insulation resistance tester ect.Material InformationHow to choose the material, not the ... environment of the rubber parts, choosing the best material. Age resistance Elastic cushion of Type X