SPIRAL WOUND GASKET SPECIFICATIONS
Spiral wound gasket specifications are very flexible. They can be tailor-made to suit the requirements of the application by combining different winding materials and metals.
Spiral wound gaskets are semi-metallic gaskets composed of two components: a soft gasket filler and a metal strip. These are wound together so that there are alternating layers of gasket filler material and metal. The filler material is the main seal, while the metal ensures that the gasket retains its shape and provides structural strength.
The materials selected for the metal strip are determined by the needs of the application in terms of fluid corrosion, operating temperature, pressure, and other factors. The most commonly used material is Stainless Steel 304, 316, and 321.
The filler material is most commonly graphite, ceramic paper, mica, and asbestos. While most often round in shape, spiral wound gasket manufacturers can make them in rectangular, oval, or diamond shapes.