The metal ring gasket refers to the metal gasket of octagonal-shaped, oval-shaped, RX-shaped or BX-shaped section by processing metal materials. It is self-tightening in diameter direction and has good sealing as the contact between gasket and the inside and outside surface of terracing glove is pressed tightly and keepgood sealing performance.

3. Materials
The materials are generally malleable cast iron (soft iron), low carbon steel, F5, Cr5Mo, 0Cr13, 0Cr18Ni9, 00Cr19Ni10, whose hardness is 30~40HBS lower than that of flange materials.

4. Type
OCTAGONAL GASKET
OVAL GASKET
RX GASKET
BX GASKET