They are of the same basic design as standard Metaflex® spiral wound gasket, but use thinner stainless steel spirals with additional graphite filler.

Prime features

• Compresses fully for maximum sealing efficiency at 25,000lb/in².
• Suitable for limited bolt stress duties as recommended for certain materials in ASME code.
• Saves over-stressing bolts or distorting flanges to compress a spiral wound gasket to the thickness of its guide ring – which is the correct installation method.
• Seals effectively at up to 20MPa/200bar, well above the pressure normally associated with Class 150 and Class 300 flanges.

How supplied
For Class 150 and Class 300 pipeline flanges.

Description
These are Metaflex® spiral wound gaskets that are designed to give top sealing efficiency at limited bolt stress.