... checks Elastic rubber o-ring:1)Strictly according to the ASTM20052)Excellent Chemical and physical property3)Long use life and excellent compression ... low temperature, oil, water, tensile, elongation, and has a good compression set, etc. MaterialNBR, EPDM, SILICONE(MVQ), Viton(FPM), HNBR, ACM ... 7 daysProduction Lead-Time15-30daysPayment TermT/T Customer’ s designwelcome Elastic rubber o-ring