... Neoprene(CR),Styrene(SBR) ,CR,ACM,PU etc.Application: O ring is widely used in different industries: Auto, Machinery, Electronic, ... conform to AS568,Metric, GB 245201.O ring detail for reference:1. Size : O ring circle diameter (C.D) Minimum0.44mm. ... machine, Slicer, Flash device, molding equpment etc.Rubber moulding over 2000 setsWorker 150Staff25QC5Main productso rings, gaskets,custom rubber parts. ...