O-Rings & Seals
Seals & Gaskets
Spiral wound gaskets, rubber profile seals, bonded washers and custom molded seals.
Range overview
Specification and supply scope
Sealing components are selected against flange geometry, media and operating envelope. Spiral wound gaskets cover ASME flange joints; rubber profile seals cover enclosures and doors; bonded washers seal threaded fasteners; and custom molded seals are built to drawing for non-standard geometries.
- Product types
- 4
- Documents
- 6
- Supply mode
- Made to order
Stock on request
Selection note: ASME B16.20, ASTM D2000, ISO 3302. Final dimensions and materials are confirmed on the order acknowledgement and, where required, the certified drawing.
Type 01 · ASME B16.20
Spiral Wound Gasket
Metal and graphite spiral wound gasket for ASME flange joints.
Typical applications
- ASME flange joints
- Refinery piping
- Steam service
- Heat exchangers
Spiral wound gaskets combine a metal winding with a graphite or PTFE filler to seal ASME flange joints across a wide temperature and pressure range. They are supplied with inner and outer rings as required by ASME B16.20.
- Metal winding with graphite or PTFE filler
- Inner and outer rings available
- ASME B16.20 dimensions
- High-temperature and high-pressure service
- Standards
- ASME B16.20 · ASME B16.5 · ASTM A240 / A182
- Materials
- SS316 winding · Graphite filler · PTFE filler · Carbon steel outer ring
Specification
| Size range | 1/2–24 in |
|---|---|
| Pressure class | Class 150–2500 |
| Winding | SS316, SS304, monel on request |
| Filler | Graphite or PTFE |
| Temperature | -196 to 550 °C (filler dependent) |
| Standard | ASME B16.20 |
Ordering range
| Size | Class | Filler | Material | Part number |
|---|---|---|---|---|
| 2" | 150 | Graphite | SS316 | BGI-SWG-0200-150-GR |
| 4" | 300 | Graphite | SS316 | BGI-SWG-0400-300-GR |
| 6" | 600 | PTFE | SS316 | BGI-SWG-0600-600-PTFE |
| 8" | 900 | Graphite | SS316 | BGI-SWG-0800-900-GR |
Type 02 · ASTM D2000
Rubber Profile Seal
Extruded or molded profile for doors, enclosures and panel sealing.
Typical applications
- Doors and enclosures
- Control panels
- HVAC equipment
- Equipment covers
Rubber profile seals close gaps around doors, panels, enclosures and equipment covers. Profiles include bulb, lip, U-channel and custom shapes in EPDM, NBR and silicone, supplied in continuous lengths or molded frames.
- Bulb, lip, U-channel and custom profiles
- EPDM, NBR and silicone compounds
- Continuous lengths or molded frames
- Compression-set resistant compounds
- Standards
- ASTM D2000 · ISO 3302 · Manufacturer standard
- Materials
- EPDM · NBR · Silicone
Specification
| Profile size | 5–50 mm |
|---|---|
| Material | EPDM, NBR, silicone |
| Hardness | 60A–80A |
| Temperature | -40 to 150 °C |
| Length | Continuous or molded frame |
| Standard | ASTM D2000 |
Ordering range
| Profile | Size | Material | Hardness | Part number |
|---|---|---|---|---|
| Bulb | 10 mm | EPDM | 70A | BGI-RPS-BULB-10-EPDM |
| Bulb | 20 mm | EPDM | 70A | BGI-RPS-BULB-20-EPDM |
| Lip | 15 mm | NBR | 70A | BGI-RPS-LIP-15-NBR |
| U-channel | 30 mm | Silicone | 60A | BGI-RPS-U-30-SIL |
Type 03 · ASTM D2000
Bonded Washer
Rubber-bonded metal washer for sealing threaded fasteners and ports.
Typical applications
- Hydraulic ports
- Pneumatic assemblies
- Automotive components
- Access covers
Bonded washers combine a metal backing with a rubber sealing face. They seal bolt heads, threaded ports and access covers while distributing clamp load, and are used in hydraulic, pneumatic and automotive assemblies.
- Metal backing with bonded rubber face
- Seals under bolt heads and ports
- Distributes clamp load
- NBR and EPDM options
- Standards
- ASTM D2000 · ISO 3302 · Manufacturer standard
- Materials
- Steel / NBR · Steel / EPDM
Specification
| Thread range | M6–M20 |
|---|---|
| Outside diameter | 14–38 mm |
| Sealing face | NBR or EPDM |
| Temperature | -40 to 150 °C |
| Backing | Zinc-plated steel |
| Standard | ASTM D2000 |
Ordering range
| Thread | OD | Material | Temperature | Part number |
|---|---|---|---|---|
| M8 | 18 mm | Steel/NBR | -30 to 120 °C | BGI-BW-M08-NBR |
| M10 | 22 mm | Steel/NBR | -30 to 120 °C | BGI-BW-M10-NBR |
| M12 | 26 mm | Steel/EPDM | -40 to 150 °C | BGI-BW-M12-EPDM |
| M16 | 32 mm | Steel/EPDM | -40 to 150 °C | BGI-BW-M16-EPDM |
Type 04 · ASTM D2000
Custom Molded Seal
Drawing-specific molded seal for non-standard geometries and media.
Typical applications
- Non-standard geometries
- Specialty equipment
- OEM assemblies
- Replacement parts
Custom molded seals are produced to drawing for geometries that cannot be sealed with standard O-rings or profiles. Tooling, compound and tolerance are agreed against the application, with first-article inspection and material certificates available.
- Built to customer drawing
- NBR, FKM, EPDM and silicone compounds
- First-article inspection
- Material and dimensional certificates
- Standards
- ASTM D2000 · ISO 3302 · Customer drawing
- Materials
- NBR · FKM · EPDM · Silicone
Specification
| Size range | 10–500 mm |
|---|---|
| Profile | Customer drawing |
| Material | NBR, FKM, EPDM, silicone |
| Hardness | 60A–90A |
| Tolerance | ±0.2 mm typical |
| Inspection | First article, dimensional report |
Ordering range
| Size | Profile | Material | Hardness | Part number |
|---|---|---|---|---|
| 50 mm | Custom | NBR | 70A | BGI-CMS-050-NBR |
| 100 mm | Custom | FKM | 70A | BGI-CMS-100-FKM |
| 200 mm | Custom | EPDM | 70A | BGI-CMS-200-EPDM |
| 500 mm | Custom | Silicone | 60A | BGI-CMS-500-SIL |
Documentation
Range documents
Datasheets, overviews and general arrangement drawings for this range. Controlled copies are issued with each order.
| Document | Type | Scope | Revision | Date | Action |
|---|---|---|---|---|---|
| Seals & Gaskets — Product Overview4 pages · PDF | Product overview | O-Rings & Seals · Seals & Gaskets | Rev. 04 | 15 Sept 2026 | Download |
| Seals & Gaskets — General Arrangement Drawing1 page · PDF | Drawing | O-Rings & Seals · Seals & Gaskets | Rev. 03 | 15 Sept 2026 | Download |
| Spiral Wound Gasket Datasheet2 pages · PDF | Datasheet | O-Rings & Seals · Seals & Gaskets · Spiral Wound Gasket | Rev. 04 | 15 Sept 2026 | Download |
| Rubber Profile Seal Datasheet2 pages · PDF | Datasheet | O-Rings & Seals · Seals & Gaskets · Rubber Profile Seal | Rev. 04 | 15 Sept 2026 | Download |
| Bonded Washer Datasheet2 pages · PDF | Datasheet | O-Rings & Seals · Seals & Gaskets · Bonded Washer | Rev. 04 | 15 Sept 2026 | Download |
| Custom Molded Seal Datasheet2 pages · PDF | Datasheet | O-Rings & Seals · Seals & Gaskets · Custom Molded Seal | Rev. 04 | 15 Sept 2026 | Download |
O-Rings & Seals Brochure
Family brochure · 6 pages
Verification
Documented at every release
Material, dimensional and pressure records are matched to the order before shipment. Certificates and test reports are available on request.
Quality and verificationMaterial traceability
Heat-number matched mill certificates and EN 10204 3.1 on request.
Dimensional inspection
Bore, face, bolt circle and envelope checked to drawing.
Pressure testing
Hydrostatic or pneumatic testing to the order specification.
Documented release
Inspection record, packing list and certificate package.
Request a quotation
Send the duty, we will confirm the configuration.
Provide size, pressure class, material, connection and quantity. For critical service, include the project specification, drawing or NDE requirements.