How Polyurethane Seals Prevent Leaks

Storage of seals and maintenance of sealing equipment: Most polyurethane seals are made of fiber materials dominated by styrene-butadiene rubber, and special care should be taken to reduce the characteristics caused by air oxidation and mildew. Seals are stored in high pressure polyethylene bags and packed in cardboard boxes to block factors such as heat, co2, oil, water, ultraviolet light, etc., which promote the deterioration of raw materials.



Sealing installation: When installing the seal, it is necessary to eliminate the dirt such as metal powder in and near the pipe trench, and pay attention not to leave cutting oil, rust inhibitor, etc.; when applying cleaning fluid, pay attention to the difference between the raw material of the seal and the seal. Compatible with dryness after cleanup. The raw material of the seal is vulcanized rubber and plastic, which is much more easily damaged than the metal composite material, so be careful when installing it so as not to damage the rod seal. The deformation during installation must be strictly controlled, especially for some plastic material seals and high temperature resistant raw materials in styrene-butadiene rubber, it is usually not easy to respond immediately after deformation.



Interaction between seals and pipe grooves: The quality of sealing properties is not only a problem for seals, but the cooperation between seals and pipe grooves, seals and the surface to be raised is also critical to the sealing characteristics. Such as: insufficient production and processing precision of the moving protruding surface, which will cause damage to the sound of the rod seal: insufficient specification precision, problems with the gap of the seal, which will cause the gap to squeeze, bite or the adhesive teeth of the seal and the mating surface bite, etc. .


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