RTJ gaskets are made from different materials depending on the application. Oval or octagonal gaskets can be chosen, with octagonal being better for sealing. Carbon steel is a common material used to make these gaskets, and it can withstand temperatures ranging from -40 to 500 degrees Celsius. They are often used with alkalis or concentrated acids. The manufacturing of these gaskets follows API 6A and ASME B16.20 standards.

RTJ and Cs gaskets are made with a color code for easy identification. When placing an order, mentioning the material, sizes, and other specifications is essential. The correct color helps identify the gasket quickly. Some manufacturers also provide a material code for added convenience. Generally, the material code for RTJ gaskets is the letter "S", and the color is silver with white, following the standard. This applies to both oval and octagonal RTJ gaskets made of carbon steel.

RTJ gaskets are frequently coated to enhance their effectiveness. The coating not only improves corrosion resistance but also increases durability. A carbon steel ring joint gasket can be coated with a specific material when necessary. The coating is typically 0.0003 inches thick, with graphite and PTFE being popular choices. A carbon graphite gasket consists of carbon steel with a graphite coating. Nitrile rubber is another standard coating for RTJ gaskets in appropriate situations. For further information, reach out to your chosen manufacturer or supplier.

Carbon steel RTJ gaskets are a cost-effective option that is suitable for various applications. Depending on the gasket style, they can withstand pressures ranging from 5000 to 15,000 psi. These gaskets have a temperature rating from cryogenic temperatures to 500 degrees Celsius. They are also resistant to concentrated acids and most alkalis. With a hardness of 120 HB, these gaskets meet ASME guidelines that require the flange face to be at least 30 HB harder than the gasket material. This makes them suitable for applications where the flange face is more complex, supplied all other conditions are met.