Concentric ‘V’ Grooves on the flat metal. Pitch of the Groove normally 1 to 1.5mm, groove depth will be 0.4 to 0.7mm. These gasket required Top of the ‘V’ Groove 0.1 to 0.2mm flat will give required to seal. Grooved metal Gaskets are sealing occurred by metal to metal contact. These Gaskets are normally much softer than flange material. The surface finish of the flange material are lesser than 63 micro inches. These Gaskets required high seating stress. These Gaskets required more bolt load than any other Gaskets. Every Groove will acts as separate seal.
