These gaskets are obtained from solid metals and employed for extremely high pressures and temperatures.
They initially seal due to linear contact (fit action), which facilities seating and assembly sealing is then completed by applying the correct amount of torque.
Manufacture of these seals is strictly controlled, and the finishing tolerances for perfect gasket coupling are meticulously respected-
Applications: the problems of sealing at high temperatures and pressures in production and refining processes in the petrochemical and chemical industries, and where high mechanical strength, good thermal conductivity and resistance to corrosion are necessary, are practically solved using this type of gasket. It is most widely used between R.T.J flanges and for sealing between valve body and bonnet.