... CR),Styrene(SBR) ,CR,ACM,PU etc.Application: O ring is widely used in different industries: Auto, Machinery, Electronic ... , Sanitary ware and so on.We have O ring tooling 2000sets in house, our products conform to ... 1. Size : O ring circle diameter (C.D) Minimum0.44mm. O ring outer diameter Maximal 530mm2. Color: black, white, yellow, ... Please feel free contact with us Blue color soft silicone o ring