Spiral Wound Gasket Without Rings
Ferrobend Spiral Wound Gaskets Without Rings are precision manufactured semi-metallic sealing solutions designed for tongue & groove, male & female, and grooved flange assemblies. They provide resilience, sealing performance, and recovery under demanding operating conditions.
Product Overview
A ringless spiral wound sealing element for joints that locate the gasket through their flange geometry. Intended for compatible tongue & groove, male & female and grooved arrangements.
| Product type | Semi-metallic spiral wound gasket |
|---|---|
| Construction | Spiral wound metallic strip and filler, without inner or outer rings. |
| Standard / design basis | ASME B16.20; other configurations as specified below |
| Nominal size range | ½" to 60" nominal sizes; custom dimensions available |
| Pressure classes | ASME Classes 150, 300, 600, 900, 1500 and 2500 |
| Winding material | Stainless steel and selected alloys; available grades listed below |
| Filler material | Graphite, PTFE and other listed fillers, selected for the service |
| Ring arrangement | No inner or outer rings |
Standards, Dimensions & Pressure Classes
| ASME B16.20 | Metallic gasket requirements applicable to spiral wound gasket construction. |
|---|---|
| ASME B16.5 | Flange dimensional requirements for applicable industrial flange systems. |
| DIN Standards | Applicable gasket configurations for compatible DIN flange systems. |
Sizes & pressure classes
- Nominal sizes
- ½" to 60" nominal sizes; custom dimensions available
- Pressure classes
- ASME Classes 150, 300, 600, 900, 1500 and 2500
- Flange compatibility
- Tongue & Groove, Male & Female and compatible grooved flanges.
Use the selected standard, flange dimensions and ring configuration together. Confirm each size / class combination and custom geometry before ordering.
International references are subject to the specified configuration. Confirm the exact standard and drawing with the enquiry.
Technical Specifications
| Sealing element | V-shaped metallic strips spirally wound with selected soft filler. |
|---|---|
| Ring arrangement | No guide rings; gasket positioning is provided by the flange geometry. |
| Recovery | Elastic recovery accommodates thermal movement and pressure variations. |
| Chemical compatibility | Select winding materials compatible with the chemical or corrosive environment. |
| Custom construction | Special profiles, sizes and material combinations are available to project requirements. |
| Temperature capability | Dependent on selected winding and filler materials |
| Pressure capability | ASME Classes 150, 300, 600, 900, 1500 and 2500; suitability depends on gasket design and operating conditions. |
| Flange compatibility | Tongue & Groove, Male & Female and compatible grooved flanges. |
| Manufacturing | Controlled winding and dimensional inspection throughout production. |
Temperature, pressure and chemical suitability must be considered together for the selected winding, filler and flange joint. Confirm the required thickness and service limits with the enquiry.
Quality & Testing
| Visual Inspection | Checking winding quality, filler condition, and surface finish. |
|---|---|
| Dimensional Verification | Verification of inside diameter, outside diameter, thickness, and specified tolerances. |
| Material Verification | Confirmation of specified winding and filler materials. Incoming raw materials are also checked before production. |
| Documentation Review | Review of inspection records and material traceability documentation. |
Finished gaskets receive final inspection before dispatch. Material certificates and inspection documentation are available on request.
Downloads & Documents
Browse the existing online guides, or request product-specific documents from our team.
Frequently Asked Questions
Which pressure classes and sizes are available?
ASME Classes 150, 300, 600, 900, 1500 and 2500. The stated nominal size range is ½" to 60"; custom sizes are available. Confirm the size / class combination for the selected standard.
Which materials can be supplied?
Choose from the component-specific winding, filler and special material options listed above. Final material selection depends on the process media and service conditions.
Which standards are supported?
ASME B16.20 is listed as the primary gasket standard. Other dimensional or flange configurations remain subject to the project-specific requirements shown above.
Can custom sizes and configurations be supplied?
Yes. Custom dimensions and material combinations are available to project requirements. Confirm the flange geometry and service conditions with the enquiry.
How should the gasket be installed and stored?
Follow the product-specific positioning and tightening steps above. Keep unused gaskets in their original packaging in a clean, dry location away from moisture, chemicals and direct sunlight. Protect them from bending and heavy loads.
Get a quote for your gasket configuration
Share the size, materials and quantity for your gasket without rings.