Spiral wound gaskets
Spiral wound gaskets (SWG) are manufactured by spirally winding a V-shaped metal strip and a strip of non-metallic filler material (graphite, PTFE).
Due to their structure these gaskets are used in the high-pressure area and under critical operating conditions. They are highly suitable for the sealing of flanged joints with high changes in temperature and pressure and have a good recovery behaviour.
Spiral wound gaskets can be strengthened by an centering ring and/or inner ring. Our standard production program comprises a range of spiral wound gaskets with inner diameters of 20 bis 3500mm and a nominal thickness of 3.2mm, 4.5mm, 6.5mm and 7.2mm. Spiral wound gaskets of non-standard dimensions and shapes, and larger diameters are available on request.
Spiral wound gaskets without centering and inner ring
These gaskets are manufactured of a spiral-wound metal strip and a non-metallic filler material.
Materials metal strip
Steel - 1.4301, 1.4401, 1.4541, 1.4571
Monel (NiCu30Fe) - 2.4360
Filling material
Graphite 99,85% - operating temperature -100°C bis +550°C
Graphite 98% - operating temperature -100°C bis +400°C
PTFE - operating temperature -200°C bis +250°C
Application limit
Operating pressure max. 160 bar
Gasket thickness
3,2mm - 4,5mm - 6,5mm - 7,2mm
Profile type
ITS MS 10 (with graphite)
ITS MS 10T (with PTFE)
Spiral wound gaskets with inner retaining ring
These gaskets are manufactured of a spiral-wound metal strip and a non-metallic filler material. The inner retaining ring increases the axial rigidity and resilience of the gasket.
Materials metal strip
Steel - 1.4301, 1.4401, 1.4541, 1.4571
Monel (NiCu30Fe) - 2.4360
Filling material
Graphite 99,85% - operating temperature -100°C bis +550°C
Graphite 98% - operating temperature -100°C bis +400°C
PTFE - operating temperature -200°C bis +250°C
Material inner ring
Generally the material corresponds to that of the metal strip.
Application limit
Operating pressure max. 320 bar
Gasket thickness
3,2mm - 4,5mm - 6,5mm - 7,2mm
Profile type
ITS MS 12
Spiral wound gaskets with outer centering ring
These gaskets are manufactured of a spiral-wound metal strip and a non-metallic filler material. The metallic outer centering ring controls the compression and holds the gasket centrally within the bolt circle.
Materials metal strip
Steel - 1.4301, 1.4401, 1.4541, 1.4571
Monel (NiCu30Fe) - 2.4360
Filling material
Graphite 99,85% - operating temperature -100°C bis +550°C
Graphite 98% - operating temperature -100°C bis +400°C
PTFE - operating temperature -200°C bis +250°C
Material outer centering ring
C-Steel - galvanised, varnished, or high-grade steel
Application limit
Operating pressure max. 320 bar
Gasket thickness
3,2mm - 4,5mm - 6,5mm - 7,2mm
Profile type
ITS MS 14
Spiral wound gasket with outer centering and inner retaining ring
These gaskets are manufactured of a spiral-wound metal strip and a non-metallic filler material. The metallic outer centering ring controls the compression and holds the gasket centrally within the bolt circle. The inner retaining ring increases the axial rigidity and resilience of the gasket.
Materials metal strip
Steel - 1.4301, 1.4401, 1.4541, 1.4571
Monel (NiCu30Fe) - 2.4360
Filling material
Graphite 99,85% - operating temperature -100°C bis +550°C
Graphite 98% - operating temperature -100°C bis +400°C
PTFE - operating temperature -200°C bis +250°C
Material outer centering ring
C-Steel - galvanised chromised or varnished, or in high-grade steel
Material inner ring
Generally the material corresponds to that of the metal strip.
Application limit
Operating pressure max. 320 bar
Gasket thickness
3,2mm - 4,5mm - 6,5mm - 7,2mm
Profile type
ITS MS 16
Features
- Outstanding temperature resistance - permanent temperature:-100°C to approx. +550°C (from +450°C consultation necessary)
- constant diffusion rates - also at high temperatures
- Good temperature-changing behaviour, high compressibility, good adaptability
- High pressure application limit (320 bar) - Fire safe appliances
- very good media resistance, particularly against corrosive materials and chemicals
- no ageing or embrittlement- harmless to health
Areas of Application/ Appliances
- applicable for very high operating pressures, full utilisation of the screw forces recommended
- middle to high admissible surface pressure, operating pressure max. 100 bar, permanent temperature max. +550°C
- primarily with high leak tightness requirements (fulfils TA-Luft), because of high gas and liquid tightness
- no special requirements for the flange sealing surfaces, flange form C by DIN EN in 1092 is enough
- Application in particular in pipelines and containers of the chemical and petrochemical industry, the power stations as well as heating installations and more
