First, we can distinguish between the appearance of the wound gasket and the graphite gasket. Simply speaking, the wound gasket is like a snail-like spiral wound. It is a relatively regular winding of a layer of steel strip and a layer of graphite, which is finally entangled. Both the start and end points have been spot welded and reinforced. Generally speaking, for the quality of the wound gaskets, they basically say that the steel strips are firmly soldered without pulling, especially the fact that there are not many solder joints, which may be unreal. In addition, the entangled steel strip and graphite strip should be kept even. The graphite gasket does not appear to have as many lines from the outside. The product of one-time molding after pure graphite paper is subjected to high-pressure pressing by a precision mold. The surface of the better quality graphite gasket looks very bright and smooth.
Also, we can distinguish them from the perspective of the thickness of the gasket. The thickness of the graphite gasket is usually between 5 mm and 10 mm (some special large graphite gaskets can also achieve a thickness of several tens of millimeters), while the thickness of the metal wound gasket is basically maintained at: 3.2 seconds or 4.5 mm Because the graphite gasket is a little wider than the steel strip, pay attention to its thickness when measuring.