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Selection of stainless steel sight glass gaskets
Posted on:2017-06-13

In modern industrial automation more and more common today, in the production of an experienced staff, his vision is very important, and this is inseparable from an excellent production of the mirror. Stainless steel mirror is used 304/316/321/316L as main materials produced by the mirror, the mirror used in stainless steel equipment, pressure vessels, chemical tower equipment pot, stainless steel pipe and mirror used in chemical, petroleum, electric power and other pipe. Between the mirror and the piping or equipment gasket to choose whether appropriate occlusion relation to mirror the price, at the same time will directly affect the probability of pipeline and pipeline mirror produce leakage phenomenon. The mirror is mainly made of stainless steel gasket corrosion watch mirror using pressure rate and temperature rate diameter of the flange sealing surface type medium were treated with occlusion. According to the latest HG standard, the main stainless steel mirror gasket and flange gasket are as follows.
 
1, rubber gasket: nominal pressure <=1.6MPa, diameter =10~2000mm, the maximum use temperature of <200 degrees, sealing surface type: convex surface, concave / convex, tenon / groove surface, full plane, flange type: various types.
 
2 asbestos rubber sheet: nominal pressure <=2.5MPa, diameter =10~2000mm, the maximum use temperature of <300 degrees, sealing surface type: convex surface, concave / convex, tenon / groove surface, full plane, flange type: various types.
 
3, non asbestos rubber plate: nominal pressure <=4.0MPa, diameter =10~2000mm, maximum temperature of <290 degrees, seal type: surface, concave / convex tenon, surface / groove surface, plane flange type: various types of.
 
4, PTFE: nominal pressure <=1.6MPa, diameter =10~2000mm, the maximum use temperature of <100 degrees, sealing surface type: convex surface, concave / convex, tenon / groove surface, full plane, flange type: various types.
 
5, expansion or filled PTFE or belt: nominal pressure <=4.0MPa, diameter =10~2000mm, maximum temperature of <200 degrees, seal type: surface, concave / convex tenon, surface / groove surface, plane flange type: various types of.
 
6, flexible graphite plate: nominal pressure 1.0~6.3MPa, diameter =10~2000mm, the maximum use temperature of <650 degrees, sealing surface type: convex surface, concave / convex, tenon / groove surface, flange type: various types.
 
7, high temperature mica composite plate: nominal pressure 1.0~6.3MPa, diameter =10~2000mm, the maximum use temperature <900 degrees, sealing surface type: convex surface, concave / convex, tenon / groove surface, flange type: various types.
 
8, PTFE coated gasket: nominal pressure 0.6~4.0MPa, diameter =10~600mm, the maximum use temperature of <150 degrees, sealing surface type: protruding surface, flange type: all types.
 
9, winding pads: nominal pressure 1.6~16.0MPa, diameter =10~2000mm, maximum use temperature: according to different materials, seal type: surface, concave / convex surface, tenon / groove face flange type: / hubbed socket welding, butt welding, flange cover.
 
10, tooth shape combination pad: nominal pressure 1.6~16.0MPa, diameter =10~2000mm, the maximum use temperature: according to different components, sealing surface type: convex surface, concave / convex, tenon / groove surface.
 
Flange type: / hubbed socket welding, butt welding, flange cover, 11. Metal gasket: nominal pressure 2.5~10.0MPa, diameter =10~900mm, the maximum use temperature: according to different components, sealing surface type: protruding surface, flange type: with neck welding, integral, flange cover 12. Metal ring gasket: nominal pressure 6.3~16.0MPa, diameter =10~400mm, the maximum use temperature: 700 degrees, sealed type: ring connection surface, flange type: with neck welding, integral, flange cover. Finally, the advantages and disadvantages of all kinds of gaskets are the most commonly used gaskets for stainless steel mirrors. They are PTFE gaskets. The choice of high temperature reinforced flexible graphite composite pad, the other in the stainless steel mirror in the use of less. Use only when the pipe has special requirements.
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