... Neoprene(CR),Styrene(SBR) ,CR,ACM,PU etc.Application: O ring is widely used in different industries: Auto, Machinery, Electronic, ... AS568,Metric, GB 245201.O ring detail for reference:1. Size : O ring circle diameter (C.D) Minimum0.44mm. O ring outer diameter Maximal 530mm2 ... custom rubber parts.Material Nitrile(NBR), HNBR, EPDM,Silicone, Fluorocarbon, SBR, Neoprene(CR),Butyl(IIR),NR,PU etc.Material ...