Metaflex® Spiral Wound Gaskets

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James Walker Metaflex® spiral wound gaskets are designed to seal flanges where temperature, pressure, vibration or flow rates are beyond the capability of conventional jointing materials.

Wound in V-section metal strip and a softer filler material, to present flange surfaces with a spiral of alternate metal/filler layers Combinations of metal strip and fillers are selected to suit fluid media and operating conditions Strip materials include various stainless steels, nickel alloys, copper, titanium and zirconium Fillers include HTF (to 1000°C), compressed fibre, expanded graphite, PTFE, aluminium and lead Support rings, inside and/or outside of spiral, make gaskets suitable for high line pressure (ie, 350bar) Standard shapes: circular, obround, square, oval and diamond. Non-standard shapes made to order.

Metaflex® Spiral Wound gaskets are used worldwide for pipelines and pressures vessels on steam, petrochemical, nuclear, marine and hydraulic plant, as well as on heat exchangers. They are supplied as standard for flange types: ASME/ANSI B16.5, BS1560, BS10, API 650, MSS SP 44, BS4504, DIN, JIS and NF.

Metaflex® Lolode - for limited bolt loadings

Spiral wound gaskets that give maximum sealing efficiency at limited bolt stress (ie, 25,000lb/in2), as recommended for some materials in ASME code For Classes 150 and 300 flanges on pipelines Pressure tested to 200bar - significantly higher than the normal operating limit of the flanges.