Teadit® Style 913M is a standard Style 913 spiral wound gasket, with the inclusion of an inner ring. The
purpose of the inner ring is to fill out the space between the flanges, avoiding turbulence in the media
flow, or as protection against corrosion or erosion. It is also significantly utilized as compression limitation.

For applications with high temperature variations (thermal cycling),and/or pressure variations, and/or flange rotation
problems etc., gaskets with adequate residual stress (stress retention),flexibility and recovery are needed. TEADIT spiralwound gaskets have been designed to meet these demanding requirements.
Spiral-wound gaskets are made of a preformed metallic strip and a soft filler material (PTFE or graphite), wound together under pressure, and optionally with an inner and/or outer guide ring. The metal strip holds the filler, resulting in excellent mechanical resistance, resilience and recovery.