Spiral-wound gaskets comprise a mix of metallic and filler material. Generally, the gasket has a metal wound outwards in a circular spiral (other shapes are possible) with the filler material (generally a flexible graphite) wound in the same manner but starting from the opposing side. This results in alternating layers of filler and metal. The filler material in these gaskets acts as the sealing element, with the metal providing structural support.
These gaskets have proven to be reliable in most applications, and allow lower clamping forces than solid gaskets.
Size- We can offer dimension from ¼" to 76" thick form 1/8" to 3/8" normally Gasket thickness is 0.176" and outer ring thickness is 0.125". We can also offer spiral wound Gasket in round (without outer Ring) oblong, Square, Diamond, and Oval shape
Strip: Stainless Steel 304/316L/321/410/310/Monel/Inconel/Duplex/Super Duplex/Alloy-20.
Filler: CAF, Blue Asbestos, Acid Resistance CAF, Teflon, Grafoil, Ceramic etc.
Outer Ring: Carbon Steel, Stainless Steel, 304/316.
Normally Gasket are manufactured as per ASME B 16.20 STD. To suit flanges of ANSI – B 16.5 MSS SP-44 and API –605 STD. However Gasket can be offered to suit BS-3381, BS-4865, BS-3293, DIN IS 7719 and as per customers requirement.