LNG & CNG O-Rings, Gaskets, and Seals
LNG and CNG systems require sealing materials capable of maintaining reliable performance under extreme low temperatures, high pressure, fuel exposure, rapid decompression conditions, and aggressive operating environments. O-rings, gaskets, seals, and custom parts used in liquefied natural gas (LNG) and compressed natural gas (CNG) equipment must resist fuel permeation, thermal cycling, compression set, explosive decompression, and mechanical wear while maintaining long-term sealing integrity.
LNG and CNG sealing applications are commonly found throughout fuel storage systems, compressors, pumps, cryogenic equipment, transfer systems, valves, regulators, fueling stations, vapor recovery systems, transportation systems, and industrial gas handling equipment. These environments often require specialized low temperature elastomers and engineered sealing solutions capable of maintaining flexibility and sealing force in conditions where standard materials may become brittle or fail prematurely.
With Canyon Components, you can be sure that high quality O-rings, gaskets, seals, and custom parts for LNG and CNG systems are always readily available. Standard and custom sealing solutions are available using low temperature FKM (Viton™), HNBR, fluorosilicone (FVMQ), PTFE, PTFE spring-energized seals, and Canrez® FFKM compounds.
Chemical processing O-rings from Canyon Components in Kalrez®, Canrez®, Chemraz®, and Parker® materials for aggressive chemical environments.
LNG & CNG Materials Available
This table shows many of our standard materials and links out to our O-ring store. Get in touch with us if you need a custom gasket, custom molded part, or non-standard geometry!
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Please consult a Canyon Components Engineer about your specific application and we will use our decades of experience to formulate a solution that fits your need.
What are LNG & CNG Sealing Materials?
LNG and CNG sealing materials are engineered elastomers and thermoplastics specifically designed to maintain sealing performance in natural gas handling systems exposed to low temperatures, high pressures, fuel gases, and rapid decompression conditions. These materials are commonly used in O-rings, gaskets, valve seats, backup rings, custom molded parts, cryogenic seals, compressor seals, and fuel transfer system components.
Liquefied natural gas systems often operate at cryogenic temperatures that place significant stress on elastomeric materials due to thermal contraction and brittleness concerns. Compressed natural gas systems commonly expose seals to extremely high pressures and rapid gas decompression conditions that can damage conventional sealing materials.
Common Considerations
Low Temperature Flexibility
LNG systems operate at extremely low cryogenic temperatures that can cause standard elastomers to harden or crack. Specialized low temperature materials are required to maintain flexibility and sealing performance under cryogenic conditions.
Explosive Decompression Resistance
CNG systems commonly operate under high pressure conditions where gases can permeate into elastomeric materials. During rapid decompression, trapped gas can expand internally and damage the seal. AED and RGD resistant materials are commonly required for these environments.
Fuel Compatibility
Natural gas systems may expose seals to hydrocarbons, fuel additives, oils, and process contaminants. Proper material compatibility is critical for preventing swelling, hardening, cracking, or premature seal degradation.
Compression Set Resistance
O-rings and gaskets used in LNG and CNG systems must maintain long-term sealing force despite thermal cycling and pressure fluctuations. Compression set resistance is especially important for long-term sealing reliability.
Pressure Resistance
High-pressure CNG systems require sealing materials with strong extrusion resistance and mechanical durability capable of maintaining sealing integrity under demanding operating conditions.
Thermal Cycling
Fuel handling systems commonly experience repeated heating and cooling cycles that can stress sealing materials and reduce long-term performance if improper materials are selected.
Permeation Resistance
Gas permeation can be a major concern in natural gas systems. Specialized materials may be selected to help minimize fuel permeation and leakage over long service intervals.
Key Standards
NORSOK M-710
NORSOK M-710 is commonly referenced for elastomer materials used in high-pressure oil and gas applications involving explosive decompression resistance. Many LNG and CNG systems require materials capable of passing rapid gas decompression testing.
NACE TM0297
NACE TM0297 testing evaluates elastomer resistance to rapid gas decompression and is frequently used for high-pressure gas sealing systems.
ASTM D2000
ASTM D2000 provides a classification system for elastomer materials based on heat resistance, oil resistance, and physical properties. Many industrial LNG and CNG sealing materials are specified according to ASTM D2000 requirements.
API Standards
Various API standards may apply to sealing systems used in natural gas handling, compressors, valves, and fueling infrastructure depending on the application and operating environment.
Please consult a Canyon Components Engineer about your specific application and we will use our decades of experience to formulate a solution that fits your need.
LNG & CNG Materials Available
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LNG and CNG systems require specialized O-rings, gaskets, seals, and custom parts capable of operating reliably under extreme low temperatures, high pressure conditions, fuel exposure, and rapid decompression environments. Proper material selection is critical for maintaining sealing integrity, minimizing downtime, and ensuring long-term operational safety in natural gas handling equipment.
Each sealing material offers different advantages depending on the operating temperature range, pressure conditions, fuel compatibility requirements, explosive decompression exposure, and mechanical demands of the application. The best material selection depends on the specific LNG or CNG environment and equipment requirements.
Canyon Components supplies high quality O-rings, gaskets, seals, PTFE components, backup rings, and custom parts for LNG and CNG systems using advanced low temperature elastomers and engineered sealing materials. Supporting documentation including Datasheets, TDS, Test Reports, MTR documentation, MSDS, and SDS resources are available upon request.
Canyon Components strives to meet all customer service requests. Feel free to contact Canyon Components engineering and let our knowledgeable staff help you design the perfect part for your needs.
Please consult a Canyon Components Engineer about your specific application and we will use our decades of experience to formulate a solution that fits your need.
Other Industries
Oilfield Sealing Solutions
Canyon Components supplies O-rings, gaskets, and custom parts for oil field applications, offering Kalrez®, Canrez®, Chemraz®, and Parker® O-rings in FFKM, FKM, HNBR, EPDM, and other oilfield-grade materials. Engineered for extreme chemical resistance, high pressure, & temperature stability in drilling, production, and refinery environments.
Medical & Pharma Sealing
Canyon Components supplies medical and pharmaceutical-grade O-rings, gaskets, and custom parts in Kalrez®, Canrez®, Chemraz®, and Parker® O-rings. Available in FFKM, FKM, EPDM, silicone, and USP Class VI compliant materials for medical devices, pharmaceutical manufacturing, and drug delivery systems. Designed for biocompatibility, sterilization, & regulatory compliance.
Food & Dairy Sealing
Canyon Components supplies FDA compliant and 3A sanitary O-rings, gaskets, and custom parts for the food and dairy industry. Available in Kalrez®, Canrez®, Chemraz®, and Parker® O-rings in FFKM, EPDM, silicone, & other hygienic materials for processing equipment, pumps, and valves. Designed for hygiene, safety, and compliance with strict food-grade standards.
Semiconductor & Solar Sealing
Canyon Components supplies O-rings, gaskets, and custom parts for semiconductor and solar applications. Available in Kalrez®, Canrez®, Chemraz®, and Parker® O-rings in FFKM, FKM, EPDM, silicone, and other advanced materials designed for plasma resistance, chemical compatibility, & durability in high-purity manufacturing and renewable energy systems.
EMI & RFI Shielding
Canyon Components supplies CanGuard EMI and RFI shielding O-rings, gaskets, and custom parts in silicone, fluorosilicone, EPDM, and conductive rubber or plastic. Designed to protect sensitive electronics, aerospace systems, defense equipment, and telecom devices from electromagnetic and radio frequency interference. Available in AS568 and custom sizes.
Drinking Water Sealing
Canyon Components supplies NSF 61 and WRAS certified O-rings, gaskets, and custom parts for drinking water systems. Available in Kalrez®, Canrez®, Chemraz®, and Parker® O-rings in EPDM, FKM, silicone, and other water-safe materials designed for pumps, valves, storage tanks, and water distribution systems.
Military, Aerospace & Automotive Sealing
Canyon Components supplies O-rings, gaskets, and custom parts for military, aerospace, and automotive applications. Available in Kalrez®, Canrez®, Chemraz®, and Parker® O-rings in FFKM, FKM, EPDM, silicone, and other advanced materials engineered for strength, precision, and durability under extreme conditions including high temperature, pressure, and chemical exposure.
Chemical Processing Sealing
Canyon Components supplies high-performance O-rings, gaskets, and custom parts for chemical processing applications. Available in Kalrez®, Canrez®, Chemraz®, and Parker® O-rings in FFKM, FKM, EPDM, silicone, and other chemically resistant materials. Engineered for sealing reliability, long-term durability, and compatibility with aggressive acids, solvents, and process chemicals.
UL Certified O-Rings, Gaskets & Custom Parts
Canyon Components offers UL certified O-rings, gaskets, and custom parts in Kalrez®, Canrez®, Chemraz®, and Parker® O-rings. Available in FFKM, FKM, EPDM, silicone, NBR, and other materials tested for safety, performance, and compliance with UL standards for electrical, industrial, and consumer applications.
General Purpose O-Rings, Gaskets & Custom Parts
Canyon Components supplies general purpose O-rings, gaskets, and custom parts in Kalrez®, Canrez®, Chemraz®, and Parker® O-rings. Available in FFKM, FKM, EPDM, silicone, NBR, and other versatile, cost-effective materials for manufacturing, processing, construction, and industrial applications.
Nuclear Grade Materials
Canyon Components supplies nuclear grade EPDM O-rings, gaskets, and custom parts engineered for radiation resistance, steam exposure, and long-term durability in reactor and containment environments. EPDM is the primary material for these applications, offering outstanding stability under heat, radiation, and chemical stress.
Packaging Industry
Packaging industry O-rings, gaskets, seals, tubing, and custom parts for automated equipment, food processing systems, and high-speed machinery.
LNG & CNG O-Rings, Gaskets, and Seals
Explore O-rings, gaskets, seals, and custom parts for LNG & CNG systems. Low temperature FKM, HNBR, PTFE, and Canrez® FFKM solutions for fuel handling applications.
O-Rings, Gaskets & Seals for Industrial Machinery
Industrial machinery O-rings, gaskets, seals, diaphragms, and custom parts with abrasion resistance, oil resistance, and high pressure sealing performance.
O-Rings, Gaskets & Seals for the Warehousing Industry
Warehousing industry O-rings, gaskets, seals, tubing, and custom parts for conveyors, automation systems, forklifts, and material handling equipment.
O-Rings, Gaskets & Seals for the Automotive Industry
Automotive industry O-rings, gaskets, seals, diaphragms, and custom parts for fuels, oils, coolant systems, EVs, engines, and high temperature sealing.
O-Rings, Gaskets & Seals for the Mining Industry
Mining industry O-rings, gaskets, seals, tubing, and custom parts designed for abrasion resistance, chemical resistance, high pressure, and harsh environments.
O-Rings, Gaskets & Custom Parts for Material Handling
Material handling industry O-rings, gaskets, seals, tubing, and custom parts with chemical resistance, abrasion resistance, and high-load durability.
Low Temperature Elastomers
Canyon Components supplies low temperature elastomers for O-rings, gaskets, and custom parts engineered for sub-zero sealing performance. Available in silicone, fluorosilicone, and low-temperature FKM, as well as Kalrez®, Canrez®, Chemraz®, and Parker® O-rings. Designed for aerospace, automotive, cryogenic, and industrial applications requiring flexibility and durability in extreme cold. Oring, O'ring, O ring
High Temp Steam Resistant Elastomers
Canyon Components supplies high temperature steam resistant elastomers for O-rings, gaskets, and custom parts used in harsh steam environments. Available in FKM, EPDM, and FFKM, as well as Kalrez®, Canrez®, Chemraz®, and Parker® O-rings. Engineered for valves, sterilization systems, and process equipment in chemical, medical, food-grade, and industrial applications. Oring, O'ring, O ring
High Temperature Elastomers
Canyon Components supplies high temperature elastomers for O-rings, custom parts, and tubing engineered to perform above 240°C. Available in Kalrez®, Canrez®, Chemraz®, Parker®, FFKM, special silicone blends, and PTFE seals. These materials provide durability, thermal stability, and chemical resistance for aerospace, semiconductor, automotive, and industrial applications. Oring, O'ring, O ring
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