... flash.5. Color: black, transparent, green, red, yellow, grey, purple, pink, etc.6. Material approved: ... FDA, NSF, UL, etc.7. Style: O ring, X ring, D ring, V ring, etc.8. Applications: automobile, electrical appliance, ... be water proof. -------------------------------------------EPDM rubber watch o ring----------------------------------------------Our products: EPDM rubber watch o ringWelcome to ...