A metal ring, grooved and subsequently coated with a layer of softer material which guarantees the seal, particularly suitable with hard operating condition, 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.
It’s 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.
Excellent choice for 150# and 300# ASME flanges where available bolt loading is minimal.
These Gaskets required high seating stress.
These Gaskets required more bolt load than any other Gaskets.
Every Groove will acts as separate seal.