... 1.water, oil resistance, anti-aging 2.silicone,rubber material 2.FDA,ROHS,SGS Certificate Factory history8 ... yearsFactory area3700m2CertificateSGS, ROHSMachines(20sets)Rubber mixer, Automatic slitting machine, Slicer, Flash device, ... rings, gaskets,custom rubber parts.Material Nitrile(NBR), HNBR, EPDM,Silicone, Fluorocarbon, SBR, Neoprene(CR),Butyl(IIR),NR,PU ...