... 2) Quick supply 3) Stringent quality checks Elastic rubber o-ring:1)Strictly according to the ASTM20052)Excellent Chemical and ... in size and colour ProductsRubber o-ring, y-ring, u-ring, x-ring, rubber gasket and all kinds of rubber itemsPlace of originXiamen, China Features ... , oil, water, tensile, elongation, and has a good compression set, etc. MaterialNBR, EPDM, SILICONE(MVQ), Viton(FPM), HNBR, ...