... 200Staff25QC5Main productso rings, v-ring,gaskets,,washer, grommet, oil seal,custom rubber parts.Material Nitrile(NBR), HNBR, EPDM,Silicone, Fluorocarbon, SBR, ... rubber sealing kits, our main products including O rings, Gaskets, Washers, custom mold rubber and other rubber seal kits ... .Our Material: Nitrile(NBR), HNBR, EPDM, Silicone, Fluorine(FKM,FPM), Neoprene(CR),Styrene(SBR) , ...