The spiral wound gasket are composed of a metallic continuous strip with a special shaped profile, coupled with a continuous foiling strip evenly wound in concentric spirals under constant stress. The spiral wound gaskets are reinforced on the inner and outer diameters by winding of several electrically welded spirals of metal only.

The main property of the spiral wound gaskets, owing to the elastic action of the special metallic strip profile, is that of offering a perfect sealing under all fluctuating pressure and temperature conditions, also where the temperature excursions has considerable values, maintaining tightening by elastic recovering. This elasticity can be modified by a proper selection of the components, and they can be installed even with flanges at standard working, with a lighted pitted or buckled by the used flanges. A proper selection of the materials (both metals & fillers) allows adequate the spiral gaskets to the most various operating conditions.

The spiral gaskets are used worldwide for pipelines, refining plants, chemical or petrochemical plants, nuclear plants, compressors piping, cylinder heats, heat exchangers, etc.
This type of gasket is able to accommodate pressures from high vacuum to over 700 bar (10000 psi) and seal at temperatures from cryogenic to 1650°C. They are available in all metals and fillers, either to International standards, (ANSI B16.5, BS1560, BS10, BS4504,MSS SP44, DIN and AP1605) or custom made to individual sizes.

The material of construction of Spiral Wound Gaskets are as follows:

Metal Winding Strip:
SS304, SS304L, SS316, SS316L, SS321, Monel, Inconel 625, Incoloy 825, Titanium, Duplex and other materials as per customers requirements.

Filler:
Graphite, High Purity Graphite, Non-Asbestos, PTFE, High Temperature Filler, etc.

Inner & Outer Ring:
SS304, SS304L, SS316, SS316L, SS321, Monel, Inconel 625, Incoloy 825, Titanium, Duplex and other materials as per customers requirements.