... shenzhen in 2004,produce various size o rings,rubber gaskets,washer,rubber seals custom rubber parts. Shenzhen (Xinhuaxu) ... kits, our main products including O rings, Gaskets, Washers, Grommets, Bushing, Gear and other rubber parts. Our Material: Nitrile(NBR), ... .Tooling over 2000 setsWorker 150Staff25-30QC8-10Main productso rings, gaskets,custom rubber parts.Material Nitrile(NBR), HNBR, EPDM,Silicone ...