shuguangjinzuan

1)The graphite seal rings are available and tailor-made as customers' request. 2)The graphite seal 1)The graphite seal rings are available and tailor-made as customers' request.2)The graphite seal rings with wear resistance,resistance to high temperature,pressure resistance,corrosion resistance,creep resistance,self-lubricating without oil,little expansion coefficient,and excellent sealing.3)The ...