Oil and Gas Gaskets, O-Rings, and Seals
Cannon Gasket has ISO 9001 systems with ASME B16.21 flange pattern capability, large-diameter presses, and in-house tool design. Manufacturing since 1971. Send flange drawings, service fluid, and pressure class for material selection, quoted pricing, and production lead time.
- Serving refineries, pipeline operators, and process-equipment OEMs across upstream production, midstream transport, and downstream refining.
- Used for pipeline flange gaskets, refinery process seals, pump and valve sealing, heat-exchanger gaskets, tank gaskets, and instrumentation seals.
- Fabricated from Klingersil compressed fiber, Garlock PTFE and graphite, flexible graphite sheet, non-asbestos, and Viton fluoroelastomer.
Request a quote for Oil & Gas projects.
Sealing components for oil & gas
Oil and gas operations combine high pressure, high temperature, and aggressive chemistry, including sour gas, drilling fluids, refined products, and process chemicals, across upstream exploration, midstream transport, and downstream refining. Cannon Gasket supplies custom flange gaskets, O-rings, lathe-cut seals, and packing components for oilfield equipment manufacturers and refinery service contractors.
Where oil & gas sealing shows up
- Pipeline flange gaskets
- Refinery process equipment seals
- Pump and valve sealing
- Heat exchanger gaskets
- Tank and vessel gaskets
- Instrumentation sealing
Sealing Applications and Suited Materials
Refinery flange gaskets for high-pressure pipe flanges are cut from compressed non-asbestos fiber, graphite, and Klingersil, while refining process equipment running steam, hot oil, and aggressive chemical service uses graphite and Klingersil grades selected for those conditions. Wellhead and downhole O-rings for sour gas and high-temperature service are made in Viton, HNBR, and FFKM, and drilling fluid seals use Viton and FKM compounds that resist oil-based and synthetic drilling muds. For valve and pump packing, Cannon supplies lathe-cut elastomer and PTFE-based packings. Material selection follows the service fluid, pressure class, and temperature for each part.
Materials We Supply for Oil and Gas
Cannon stocks Viton in multiple compound grades, including high-temperature and chemical-resistant variants, along with FKM and HNBR, fluorosilicone, and EPDM for steam service. Sheet materials include compressed non-asbestos fiber, flexible graphite in both pure and stainless-reinforced forms, Klingersil, and Garlock. Expanded PTFE and engineering plastics such as PEEK and PTFE are available for chemical-resistant parts. This range covers the high-pressure, high-temperature, and aggressive-chemistry conditions found across upstream, midstream, and downstream equipment.
Production and Quality
Cannon produces custom flange gaskets to API and ANSI specifications, using steel-rule and compound die cutting for both large parts and tight-tolerance work. ASME B16.21 flange patterns, large-diameter presses, and in-house tool design are available for pipe flange gaskets. Every shipment carries lot-level traceability with material certifications, and stocking programs can be aligned to scheduled turnaround windows. Cannon operates ISO 9001 systems and has manufactured gaskets and seals since 1971.