Packing seal

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Packing seals can be divided into: Soft packing seal Hard packing seal Molding packing seal 1. Soft packing seal Soft packing type: Packing is usually woven from softer threads. Strips with a square cross-sectional area are filled into the sealing cavity. The gland generates a pressing force to compress the packing, forcing the packing to be pressed against the sealing surface (the outer surface of the shaft and the sealing cavity), creating a radial force for the sealing effect, thus acting as a seal. Soft filler applicable occasions: The manufacturing material selected for the packing determines the sealing effect of the packing. Generally speaking, the packing manufacturing material is limited by the temperature, pressure and pH of the working medium, and the surface roughness, eccentricity and linear speed of the mechanical equipment on which the packing works will also have requirements for the material selection of the packing. PTFE packing is made of pure PTFE dispersion resin. It is first made into a raw material film, and then twisted and woven into packing. It can be widely used in valves and pumps with high cleanliness requirements in food, pharmaceuticals, papermaking and chemical fiber, and in valves and pumps with highly corrosive media. 2. Hard packing seals Hard packing seals include split rings and split rings.