Standard Spiral Wound Gasket is the gasket with the best resilience among the semi-metallic gaskets. The structure density of the spiral wound gasket can be made according to different locking force requirements, and the inner and outer steel rings are used to control its maximum compression. The spiral wound gasket The surface accuracy of the flange sealing surface in contact with the sheet is not required to be high. The basis of the inner and outer rings is the sealing surface of the flange. The wound gasket with inner and outer rings is used on flat and raised flanges. The inner ring is mainly used for strengthening, and the outer ring is mainly used for positioning. After the outer diameter of the outer ring reaches the bolt, the middle sealing part can be centered, so that a good sealing effect can be achieved. So there are inner and outer rings.
