Ring type joint gaskets (RTJ gaskets) are typically manufactured to API 6A (Wellhead Equipment) - 17D (Subsea Ring Joint Gaskets) and ASME B16.20. Available from stock inventory in styles R – R Octagonal – RX – BX – in soft iron and low carbon steel plated for corrosion protection. As well as 316s to meet NACE MR-0175 specifications. Rubber coated ring joint gaskets and variety of other materials are also available. Specialized machined gaskets can also be manufactured to the end users specifications. The RTJ gasket is primarily used in high pressure high temperature flange gasket applications. They are precision machined, metallic rings that are designed to fit into a grooved chamber on a flange face.