SPIRAL WOUND GASKETS
Semi-metallic seals manufactured by spiral winding a V-shaped metal strip together with an inorganic filler material.
The metal material can be from stainless steel (304L, 316L, 316Ti, 317L, 347, Duplex, …) to special alloys: AL6XN, Hastelloy C22, Hastelloy C276, Titanium, Tantalum, …).
The filling material is usually: Graphite, PTFE or Mica.
They can be manufactured according to specific standards (ASME B16.20, UNE EN 1514-2) or according to specific customer design and different configurations:
S/A: without rings.
IR: with inner retaining ring.
CR: with outer centering ring
CRIR: with inner and outer ring.