... located in shenzhen in 2004,produce various size o rings,rubber gaskets,washer,rubber seals custom rubber parts. Shenzhen ... etc.Tooling over 2000 setsWorker 150Staff25-30QC8-10Main productso rings, gaskets,custom rubber parts.Material Nitrile(NBR), HNBR, ... Resistance, Gas Impermeability Resistance, Oxygen Resistance, Flame Resistance,Heat resistance,Low and High temperature Resistance, Oil and Fuel ...