General introduction of the selection criteria for sanitary stainless steel manhole gaskets

Sanitary stainless steel manholes are mainly based on pressure, diameter, temperature and flange sealing surface type, according to the latest HG standard
1. Rubber gasket: nominal pressure <=1, 6MPa, diameter=10~2000mm, maximum service temperature <200 degree, sealing surface type: protruding surface, concave surface/convex surface, kneading surface/groove surface, full plane, flange type : Various types.
2, asbestos rubber sheet: nominal pressure <= 2, 5MPa, diameter = 10~2000mm, maximum use temperature <300 degrees, sealing surface type: protruding surface, concave surface / convex surface, kneading surface / groove surface, full plane, flange type : Various types.
3, non-asbestos fiber rubber sheet: nominal pressure <= 4, 0MPa, diameter = 10~2000mm, maximum use temperature <290 degrees, sealing surface type: protruding surface, concave surface / convex surface, surface / groove surface, full plane, method Blue type: various types.
4. Polytetrafluoroethylene: nominal pressure <=1, 6MPa, diameter=10~2000mm, maximum use temperature <100 degree, sealing surface type: protruding surface, concave surface/convex surface, surface/groove surface, full plane, flange Type: Various types.
5. Expanded or filled modified polytetrafluoroethylene or belt: nominal pressure <=4, 0MPa, diameter=10~2000mm, maximum use temperature<200 degree, sealing surface type: protruding surface, concave surface/convex surface, kneading surface/groove Face, full plane, flange type: various types.
6. Reinforced flexible graphite plate: nominal pressure 1,0~6, 3MPa, diameter=10~2000mm, maximum service temperature <650°, sealing surface type: protruding surface, concave surface/convex surface, kneading surface/groove surface, flange type : Various types.