Metal to Metal Kits Gasket International offers solutions for Extreme & Critical applications. Complete Metal to Metal Sealing Kit including Ball, Seat, duly matched with Seals, Springs ready to assemble. Suitable for applications with abrasive and or corrosive fluids (i.e. mud, sand, acids) together with high temperature and pressure Metal to Metal Kits for High Temperatures applications from 250 °C to 600 ° C Mettallic Carbide Coatings on sealing surfaces as Nickel, Chrome Carbide, Tungsten Carbide and Stellite depending on the fluid to be handled and temperature.