90764350
Jun 9, 2021
Ring-shaped packing materials used to pack oil and gas pumping equipment, comprised of milled metals
Metal GoodsRing-shaped packing materials used to pack oil and gas pumping equipment, comprised of fabricated thermoplastic compounds, carbon-filled polytetrafluoroethylene (PTFE), hydrogenated nitrile rubber (HNBR), or ultra-high molecular polyethylene (UHMWPE)
Rubber Goods