The PTFE gasket has the characteristics of acid resistance, alkali resistance, high temperature resistance and resistance to various organic solvents.
Metal spiral wound gaskets can be made of flexible graphite, asbestos, PTFE and other stainless steel, copper, carbon steel and other metal materials. Working temperature: -200~650℃, working pressure: 3.5MPa, main use: suitable for pumps, valves, heat exchangers and pipes, flanges, valves, pump inlets and outlets, heat exchangers, reaction towers, query holes, hand Holes, high temperature, high pressure steam, oil and gas, solvent, gas, heat transfer medium, etc. are one of the important parts of flange sealing.
The octagonal gasket is a solid metal gasket with an octagonal cross-sectional shape by forging, heat treatment and machining of metal materials. It has a radial self-tight sealing effect. It depends on the contact between the gasket and the inner and outer surfaces (mainly the outer side) of the flange trapezoidal groove, and is pressed to form a seal. The general materials used are: carbon steel, stainless steel 304, 316, etc.
The use of graphite explosion -proof plate is different from the actual metal explosion -proof membrane, which is more likely.
Packing is also called sealing packing, which is generally woven from a relatively soft wire, and its cross-sectional area is a square or rectangular or circular strip filled in the sealing cavity.
As one of the most common, effective and important link forms in petrochemical plants, various pipelines, pipe fittings, valves, instruments and equipment, flanges have unique performance and advantages. In the vast majority of cases where flanges are used, the sealing is achieved by the cooperation of flanges, bolts and gaskets. Any problem with one of the components will cause the leakage of the entire sealing system.
