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The spiral wound gasket depends upon the mechanical characteristics of a formed metal spiral strip, rather than the compressive virtues of more traditional gasket materials. This makes it particularly suitable for low or fluctuating bolt loads.

The sealing strips, or fillers, are usually graphite, although other materials such as Teflon® may be used, the windings are always s/steal. For this type of gasket to work the spiral must not be over compressed, hence one of two types of compression control is usually used.

Standard spiral wound gaskets in many standard sizes may be purchased using our online store.

http://www.mercergasket.com/spiral_wound_gaskets.htm