- Temperature range from cryogenic to 850°C / 1,550°F
- Pressure range from ultra-high vacuum to 1,000 MPa / 145,000 psi
- Compatible with a large range of media
- Corrosion resistant and radiation tolerant
- Simple and reliable sealing
- No outgassing
- Wide range of sizes
Wills Rings® are designed for extreme conditions which exceed the capabilities of elastomer and polymer seals. They are metal seals which can be of two fundamental designs:
- Wills Rings® O
- Wills Rings® C
Wills Rings® O are the original Metal O-Ring seals and consist of a tube formed into a circular profile. Wills Rings® C are similar, but they have an open ‘C’ cross section. The open slot of the Wills Rings® C faces towards the system pressure and allows the seal to be pressure activated.
Wills Rings® are constructed from high quality metal tubing or strip in standard or thin wall thickness. They are often coated or plated with a softer material to increase their sealing performance.
Typical Oil & Gas Applications Include:
- Flare stacks
- Static seals for LNG equipment
- Cryogenic engineering
- Extreme vacuum systems
- Fire safe valves
Because Wills Rings® are constructed from metal, their ability to handle extreme conditions exceeds that of polymeric and elastomeric seal types.
Wills Rings® seals do not suffer from the outgassing normally associated with elastomer seals that can be a problem when a seal is used on sensitive equipment.
Use this table to select the optimum seal for a given application. The scoring for each seal type indicates relative performance.
Properties: A = Excellent B = Good C = Satisfactory D = Poor