Joining, flanges and sealing
Spiral-wound gasket
Sealing a flanged joint at design pressure and temperature
Specialist selection guide
What should be reviewed before selecting this product?
A spiral-wound gasket combines formed metal winding with soft filler and is widely used in process flange joints. Winding and filler materials, inner and outer rings, class and facing must be specified precisely.
Technical selection path
- 1
Define flange class, size and facing
- 2
Match winding and filler to service
- 3
Specify inner and outer ring requirements
- 4
Control bolt load and surface condition
- 5
Verify colour coding and marking against documents
Key strengths
- Good resilience under thermal cycling
- Broad process pressure-temperature use
- Configurable alloy and filler combinations
Selection limitations
- Incorrect material combination can be hazardous
- Requires sufficient uniform bolt load
- Incorrect facing or dimensions cause failure
Typical applications
Where can this option be considered?
- Raised-face process flanges
- Steam and hydrocarbons with suitable materials
- Thermally cycled services
Reference standards
A standard does not replace the project specification
Common technical questions
Concise answers before enquiry
What is the role of an inner ring?
An inner ring can shield filler from the fluid and bore and limit inward buckling; its requirement depends on the standard and service.
Is gasket colour enough for selection?
No. Full marking, material certification and purchase specification must be checked; colour is only an identification aid.
Detachable joints with defined facing and bolt load
Chemical compatibility, temperature, facing, compression and reuse prohibition
Initial review sheet
Technical attributes to review
Final values must come from project specifications, calculations and manufacturer data. This table defines the information scope.
FamilyGaskets and sealing systems
Main groupJoining, flanges and sealing
Materials to evaluateGraphite, PTFE, Compressed fibre, Stainless steel, Nickel alloy
Connections to evaluateRaised face, Flat face, Ring-type joint
Typical mediaProcess, Steam, Gas, Chemicals
Relevant industriesOil and gas, Refining, Petrochemical, Power generation, Water and utilities
Reference standardsASME B16.20 · ASME B16.21 · API 6A
Enquiry checklist
Include this information with your request
Flange facing
Class and size
Temperature and fluid
Filler and ring material
Bolt load
Thermal cycling
Before substitution
A matching name does not guarantee interchangeability
Installation dimensions, pressure rating, wetted materials, sealing design, construction standard, testing and documentation must be checked independently.
Adjacent types
Other options in this family
Final technical approval is required
This page is educational and intended for initial screening. Final selection must be approved against project requirements, actual service conditions and manufacturer documentation.
Send request for review