rubber silicone o ring 1.water, oil resistance, anti-aging 2.silicone,rubber material ... Factory history8 yearsFactory area3700m2CertificateSGS, ROHSMachines(20sets)Rubber mixer, Automatic slitting machine, Slicer, Flash device, molding equpment etc.Rubber Mouldingover 2000 setsWorker ... information Please feel free contact with us silicone rubber o-ring