... quantity accepted. Details about product: 1. Materials: silicone rubber o-ring for toys, also can be NBR, EPDM, Viton, ... international standard, and no flash.7. Color: black silicone rubber o-ring for toys, transparent, green, red, yellow, grey, ... , electrical appliance, mechanical, industrial, construction, household, medical and other fields. Original PropertiesUnit SPCE Test MethodsValue Shore ...