Spiral Wound Gaskets
Spiral wound gaskets consist of a V-shaped metal strip spirally wound in combination with a soft, filler material. The metal strip provides outstanding recovery, while the flexible filler guarantees excellent sealing.
Due to this combination of materials the spiral wound gasket is suitable for sealing under severely fluctuating temperature and pressure conditions. Depending on the application, the spiral wound gasket can be specified with outer and/or inner rings.
Type RF1
Spiral gasket only
Type SG
Gasket with guide ring to act as a compression stop
Type RF IR
Gasket with inner ring
Type SG IR
Standard gasket with inner ring and outer rings
Type SG-RTJ
Special gasket for RTJ flanges
Type HX-R
For large diameter heat exchangers
Type HX-RIR
As HX-R but with inner ring
Special Profiles
Where an undesirable reaction between graphite and the medium to be sealed occurs, a spiral wound gasket with a GT-Zone can be effective in producing a seal that will not pollute medium and gives excellent gas tightness.
The Manufacture of Spiral Wound Gaskets
We precision manufacture a comprehensive range of spiral wound gaskets by winding alternating strips of metal and filler material. By combining different winding materials and metals, gaskets can be tailored to suit a wide variety of operating conditions, but are most typically used for processes involving steam, chemicals, oils and hydrocarbons.
The outer rings rest on the flange bolts, thus locating the gasket centrally on the raised face of the flange. It also supports the sealing element and resists ‘blow out’. The ring provides a ‘stop’ preventing over-compression of the sealing element.
Key Features
- Temperature: Up to +1000°C.
- Fluid Pressures: Up to 250 bar
- Provides outstanding performance over a wide range of media and temperatures including steam, chemicals, oils and hydrocarbons.
- Because of the robust design of the spiral wound gasket, it is simple to install without damage, although care should be taken in transporting and installing large diameter gaskets without inner or outer guide rings.
- The gasket is non-adhesive and is easily removed.
- All graphite gaskets produced undergo rigorous testing and are supplied to recognised national and international standards.
SPIRAL WOUND GASKET APPLICATIONS
Essential for Critical Applications
Spiral wound gaskets are typically used in applications subjected to high temperature, high pressure and toxic chemicals in areas such as petrochemical refineries and chemical processing plants. They can also be used in low temperature applications such as chemical plants, research laboratories and cryogenic facilities.
Spiral wound gaskets are most often used in pumps, pipes, valves, heat exchangers, and systems that encounter high pressures, extreme temperatures and chemical attack. Flexibility is key to the design and manufacture of spiral wound gaskets, enabling the seal to recover under extreme temperature and pressure fluctuations.
- Petrochemical
- Pharmaceutical
- Nuclear Energy
- Oil and Gas
- Offshore
- Marine
- Pump and Valve
- Steam Applications
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Talk to a Technician
Our highly experienced technicians can advise you on the best sheet materials and manufacturing processes for a wide range of gasket applications.
Gasket Sheet Materials
We supply a vast range of gasket materials, available to buy directly or order from us. For more information visit the Gasket Sheet Materials Document.
- PTFE Gasket Sheet
- Rubber Gasket Sheet
- Spiral Wound Gasket Sheet
- Teflon Gasket Sheet
- Viton Gasket Sheet
- Graphite Gasket Sheet
- Novus Gasket Sheet
- Flexitallic Gasket Sheet
- Closed Cell Foam Gasket Sheet
- Neoprene Foam Gasket Sheet
- Sponge Gasket Sheet
- Durlon Gasket Sheet
- Grafoil Gasket Sheet
- Paper Gasket Sheet
- High Temperature Gasket Sheet
- Head Gasket Material Sheet
- Exhaust Gasket Sheet
- Fibre Gasket Sheet