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Gaskets for oil and gas
Wellheads, pipelines and gas processing plants run at high pressure, often with sour or corrosive media. A leak means lost production and a safety incident. We supply QGER gaskets for every flange class in upstream and midstream service, from Class 150 pipeline flanges to API 6A wellhead equipment.
Request a quoteWhere our gaskets are used
| Representative image | Gasket / seal | Oil & gas use | Typical construction | Oil & gas applications | Typical standards / specifications |
|---|---|---|---|---|---|
 | Ring Type Joint (RTJ) - R / RX / BX | Metal-to-metal sealing for wellhead, tree and severe high-pressure/high-temperature flange connections. | Precision-machined metallic ring seated in a matching ring groove; R, RX and BX profiles in soft iron, low-carbon, alloy or stainless steels. | Wellheads and Christmas trees; production manifolds; high-pressure valves; chokes; offshore/subsea and high-pressure process connections. | API Spec 6A / ISO 10423 for wellhead/tree equipment; ASME B16.20 for R/RX/BX gasket dimensions/materials/marking; mating flange standard API 6A or ASME B16.5/B16.47 as applicable. |
 | Spiral Wound Gasket - QSW4 | High-pressure raised-face sealing where an inner ring is needed to prevent winding extrusion or buckling. | Profiled metal winding plus graphite/PTFE/mica filler, with both metallic inner and outer rings. | High-pressure process and pipeline flanges; Class 900-2500 service; pressure vessels; refinery and gas-processing piping. | ASME B16.20; ASME B16.5 for NPS 1/2-24 and B16.47 for large-diameter flanges; ASME B31.3 at piping-system level. |
| Spiral Wound Gasket - QSW3 | General process-piping flange sealing with centering and compression control. | Profiled metal winding with graphite or other filler and a metallic outer centering/compression ring. | Refinery and gas-plant process piping; hydrocarbon, steam and utility lines; typical Class 150-600 raised-face flanges. | ASME B16.20; ASME B16.5 / B16.47 for mating flanges; ASME B31.3 for refinery/process piping systems. |
| Spiral Wound Gasket - QSW1 | Compact sealing for tongue-and-groove or male/female connections where a centering ring is not required. | Spiral-wound metal/filler sealing element without a metal ring. | Valve bonnets; pressure vessels; tongue-and-groove equipment joints; selected exchanger and compressor casing connections. | ASME B16.20 where standard dimensions apply; equipment/OEM drawing; ASME BPVC Section VIII where part of pressure-vessel design. |
 | Camprofile / Kammprofile Gasket | Severe-service flange sealing with high recovery under temperature, pressure and cyclic load changes. | Grooved metal core with soft graphite/PTFE covering layers; optional fixed or floating guide ring. | Gas-treatment heat exchangers; high-pressure vessel flanges; compressor and process equipment; refinery and LNG service. | ASME B16.20 for grooved metal gaskets with covering layers; ASME B16.5/B16.47 flange interfaces; TEMA/API 660 where used in shell-and-tube heat exchangers. |
 | Metal-Jacketed / Heat-Exchanger Gasket | Large or complex exchanger sealing where a metallic shell protects a softer filler. | Thin metallic jacket enclosing graphite or other resilient filler; single/double jacket and ribbed configurations. | Gas-treatment and refinery heat exchangers; condensers; process coolers; large equipment flanges and exchangers with internal pass-partition ribs. | ASME B16.20 for standard metal-jacketed gaskets; API 660 / TEMA exchanger specification; ASME BPVC Section VIII for pressure-vessel/exchanger design. |
 | Solid Metal / Metal-Core Gasket | Extreme pressure/temperature sealing where conventional soft gasket materials are not suitable. | Solid metallic gasket or rigid metal core, optionally faced with expanded graphite or ePTFE. | High-temperature process equipment; compressor and turbine cases; vessel covers; specialty flange connections; custom OEM joints. | ASME B16.20 where applicable; QGER also references BS/DIN standards; purchaser/OEM drawing for special shapes; ASME BPVC Section VIII when part of pressure equipment. |
 | Flexible Graphite Gasket | High-temperature hydrocarbon, steam and thermal-process sealing with excellent recovery and chemical resistance. | Flexible/expanded graphite, with or without reinforcement or metal insertion; flat ring or custom cut shape. | Steam and hot-oil lines; valve bonnet joints; refinery heaters/auxiliaries; pump/compressor covers; process flanges and manways. | ASME B16.21 for nonmetallic flat gaskets where applicable; ASME B16.5/B16.47 flange interfaces; equipment/OEM specification for bonnet/manway shapes. |
 | PTFE / ePTFE Gasket | Chemically resistant sealing for corrosive, sour-service-adjacent utilities and low-stress flanges where PTFE compatibility is appropriate. | Virgin/filled PTFE, PTFE envelope, restructured PTFE or expanded PTFE (ePTFE). | Chemical injection and treatment skids; produced-water service; sour-water/chemical systems subject to compatibility review; tank and equipment flanges. | ASME B16.21; ASME B16.5/B16.47 for flange interfaces; EN 1514-1 where EN/PN flanges are specified; purchaser chemical-compatibility requirements. |
 | CNAF / Rubber / General Non-Metallic Gasket | Low-to-medium pressure sealing for water, oil, fuel, air and utility services where the selected sheet/elastomer is chemically compatible. | Compressed non-asbestos fibre (CNAF), NBR, EPDM, neoprene, Viton/FKM, silicone or reinforced rubber, cut as ring or full-face gasket. | Cooling water; firewater; lube-oil auxiliaries; low-pressure hydrocarbons where approved; utility piping; skids, compressors and pump auxiliary systems. | ASME B16.21; EN 1514-1 for PN-designated flanges; material-specific purchaser/OEM specification. Critical sour/high-pressure gas service may require qualified elastomer standards such as NORSOK M-710 / ISO 23936-2. |
 | Flange Insulation Kit / Insulating Gasket | Electrical isolation of pipeline flanges to support cathodic-protection systems and control galvanic corrosion. | High-strength insulating gasket plus full-length insulating sleeves, insulating washers and steel washers for each bolt. | Transmission pipelines; gathering lines; tank farms; terminal piping; buried pipelines; isolation points near plants, stations and dissimilar-metal interfaces. | AMPP/NACE SP0286 for electrical isolation in cathodically protected piping; ASME B16.5/B16.47 or API flange dimensions; ISO 15589-1/project cathodic-protection specification at pipeline-system level. |
 | Graphite / PTFE Compression Packing | Dynamic/static sealing around valve stems and selected pump/reciprocating shafts; important for fugitive-emissions control. | Preformed graphite rings or braided graphite/PTFE packing sets, selected by temperature, media and stem/shaft conditions. | Process valves; isolation valves; control-valve packing boxes; pump stuffing boxes; refinery, LNG and gas-processing services. | API 622 for process-valve packing type testing; API 624 for rising-stem valves with graphite packing; ISO 15848-1 for industrial-valve fugitive-emissions qualification; valve OEM dimensions/specification. |
 | Mechanical Seal | Controls leakage at rotating process-pump shafts in hydrocarbon and utility service. | Precision stationary/rotating seal faces with springs, secondary seals and single/dual seal arrangements; material system depends on service. | API process pumps; refinery, gas-processing and terminal pumps; hydrocarbon transfer; produced-water and utility pumping. | API 682 / ISO 21049 for pump shaft-sealing systems; API 610 / ISO 13709 where the associated centrifugal pump is specified; purchaser seal plan and materials requirements. |
 | Expansion Joint / Flexible Coupling | Absorbs thermal movement, vibration, pressure surges and misalignment in piping and duct systems. | Engineered non-metallic/fabric or elastomeric flexible joint with flanged ends; metallic bellows may be used in other designs. | Refinery ducts and utility lines; compressor/pump discharge systems; terminals; flare/vent auxiliaries; cooling-water and gas-treatment plant piping. | ASME B31.3 at piping-system level; FSA guidance/purchaser specification for non-metallic expansion joints; EJMA standards where metallic bellows are used. |
 | Oil Seal / Bearing Isolator | Retains lubricant and excludes contaminants at rotating shafts and bearing housings. | Elastomeric radial shaft lip seal or non-contact labyrinth bearing isolator; solid or split configurations. | Pumps; gearboxes; compressors; fans; motors; lube-oil equipment and rotating auxiliaries in production/refining facilities. | ISO 6194 series for rotary shaft lip seals; API 610/API 617 equipment requirements as applicable; API 614 for lubrication/seal-oil systems and auxiliaries. |
 | O-Rings / Hydraulic & Elastomeric Seals | Compact sealing in valve actuators, hydraulic controls, instrumentation, subsea/production equipment and auxiliary systems. | Precision-molded elastomer or polymer seals, including O-rings, V-rings and engineered hydraulic profiles; FKM/FFKM/NBR/HNBR-type materials selected for media and decompression resistance. | Wellhead/tree controls; valve actuators; hydraulic power units; instrument fittings; subsea/production control systems; compressor/pump auxiliary equipment. | ISO 3601 for O-rings; ISO 7425 for hydraulic-cylinder seal housings; NORSOK M-710 / ISO 23936-2 for critical oilfield non-metallic seals and rapid-gas-decompression/chemical qualification where specified. |
These are typical starting points. Final selection depends on your service conditions and is confirmed with QGER engineering before manufacture.
Points to watch
- Ring gaskets must be softer than the flange groove. Tell us the flange material so we can match ring hardness.
- For sour (H₂S) service, state the NACE MR0175 / ISO 15156 requirement in your enquiry and we will confirm suitable materials.
- Never reuse a ring type joint. It deforms on make-up and will not seal a second time.
Selected QGER clients in this sector
QatarEnergy ↗QatarEnergy LNG ↗North Oil Company ↗Dolphin Energy ↗TotalEnergies E&P Qatar ↗Saudi Aramco ↗Gulf Drilling International ↗Oryx GTL ↗Qatar Shell GTL ↗McDermott Middle East ↗
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