... resistance,2)abrasion resistance, 3)UV-resistance,3)Ozone resistance Silicone Rubber O Ring:1)Material: SILICON, NBR, SBR,NR,EPDM,IIR,EP,CR ... , PDFE, EPDM, SILICONE. ect. Color Available in any color, according to customers’ requirements Working Temperature -35OC~+200OC Working Pressure ≤35MPa Rubber Silicone O Rings