Our zinc-coated ring joint gasket plant specializes in manufacturing gaskets meeting API 6A standards. Crafted from carbon steel, our RX Series gaskets, specifically RX31, offer a hardness of 120 HB. Designed for 3-inch Class 3000 LB flanges, our gaskets excel in high-pressure sealing applications. Trust our products to deliver reliable performance under demanding conditions. Product Name: Zinc Coated Ring Joint Gasket Type: RX Series RX Code: RX31 Standard: API 6A Material: Carbon Steel Hardness: 120 HB Coating: Zinc Coating Application: for 3 Inch, Class 3000 LB Flanges, High Pressure Sealing Service China Flange Gasket Bolt Nut Kits Manufacturer Co., Ltd. (https://www.flangegasketboltkits.com/) is a professional pipeline products supplier in China, who mainly provides flanges, gaskets, bolt & nut kits and other pipe & fitting products. We have rich experience in projects and professional service, and can provide pipe & fittings with very good quality for global customers.