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UL Certified O-ring Materials

UL certification is a mark of quality and safety that is recognized worldwide. It stands for Underwriters Laboratories, an independent organization that tests, inspects, and certifies various products, including materials, to ensure they meet specific safety and performance standards. This web page will delve into the importance of UL Certified materials, common application considerations, and the different types of UL certifications available.


With Canyon Components, you can be sure that high quality materials that meet you needs are always readily available. Custom & standard UL Certified Materials available now!


Check with one of Canyon’s helpful product engineers for an expert material and manufacturing recommendation.

UL certified O-rings from Canyon Components in Kalrez®, Canrez®, Chemraz®, and Parker® materials for safety-critical sealing applications.

UL Certified Materials Available

Thousands of UL Certified Materials are available now with Canyon Components! Some common UL Certified Materials include the following.


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!

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 is UL Certification?

  • UL Certification is a rigorous process that evaluates products and materials for compliance with industry-specific safety and performance standards. When a material bears the UL mark, it means it has passed extensive testing and meets specific required criteria. This certification assures consumers and manufacturers that the material is safe, reliable, and of high quality.


Common Considerations
  • Safety: Safety is paramount when selecting materials for any application. UL Certified materials have undergone rigorous testing to ensure they meet specific safety standards. This reduces the risk of accidents, fires, and other hazards associated with non-certified materials.


  • Compliance: Different industries have specific regulations and standards that must be followed. Using UL Certified materials helps ensure compliance with these requirements, reducing the risk of legal issues and costly recalls.


  • Reliability: UL Certified materials are known for their reliability. They are less likely to fail or malfunction, which can lead to costly downtime and repairs in various applications.


  • Peace of Mind: Using UL Certified materials provides peace of mind to manufacturers, contractors, and consumers. Knowing that materials have been independently tested and certified instills confidence in their quality and safety.


  • Product Liability: In case of any product-related incidents, having UL Certified materials can provide a legal defense, as it demonstrates a commitment to safety and quality.

Types

  • UL Listed: This certification indicates that a product or material has been tested and meets specific safety standards. It is widely recognized and trusted in various industries.


  • UL Recognized Component: UL Recognized Component certification applies to individual components or materials used in the manufacturing of larger products. It ensures that these components meet safety standards.


  • UL Classified: UL Classified certification is for materials that have been tested for specific properties, such as fire resistance. It helps users identify materials suitable for specific applications.

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.

UL Certified

UL 157 Elastomeric Materials: Certified Sealing Solutions for Safety and Performance
UL 157 Elastomeric Materials

Explore UL 157 elastomeric materials, certified for sealing applications requiring fire resistance and durability. Learn about their features, compliance with UL standards, and how they ensure reliable performance in critical environments.

UL Certified Materials Available

Click here to see some of our most commonly served industries!

Each of these materials has its own advantages, limitations, and cost implications. The choice of material usually depends on factors like chemical compatibility, temperature, pressure, dynamic or static use, and specification requirements.


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.

Back to Industries Hub

Medical, aerospace, military, semiconductor, Custom O-rings, Gaskets, rubber, plastic, metal parts, cast, machined, extruded

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Canyon Components UL approved gaskets, seals, and custom parts in FFKM, FKM, EPDM, silicone, and NBR for industrial and electrical systems.

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FAQ

UL (Underwriters Laboratories) certification is one of the most trusted safety and performance benchmarks in engineering. It ensures that components meet strict standards for electrical insulation, fire resistance, chemical stability, and mechanical durability. For seals, O-rings, and gaskets used in electrical, industrial, and consumer systems, UL certification demonstrates compliance with rigorous testing protocols that confirm reliability under real-world operating conditions. Canyon Components offers UL certified O-rings, gaskets, and custom parts made from Kalrez®, Canrez®, Chemraz®, and Parker® materials, including FFKM, FKM, EPDM, silicone, and NBR compounds. Each product is engineered for consistent sealing performance and long-term safety across specified high-voltage, thermal, and environmental exposures. If you have any questions or require design assistance, feel free to reach out to the Canyon Components engineering team!

Why is UL certification important for sealing materials?

UL certification verifies that materials and finished parts have been tested and approved for use in systems where safety, heat resistance, and flame retardancy are critical. It ensures that the seal will not melt, ignite, or degrade when exposed to specified conditions, whether that be elevated temperatures, electrical arcing, or chemical contact. This level of testing is essential for industries such as electrical equipment manufacturing, aerospace, automotive, and HVAC, where failure could pose a safety hazard. Canyon Components supplies UL-recognized materials that meet or exceed standards for UL 94 (Flammability), UL 157 (Rubber Gaskets and Seals), and UL 50E (Enclosures for Electrical Equipment). Each compound undergoes controlled production and documentation to maintain full traceability and certification validity. If you have any questions or require design assistance, feel free to reach out to the Canyon Components engineering team!

The most common UL standards for sealing materials include UL 157, which governs rubber gaskets, O-rings, and seals used in electrical devices and enclosures, and UL 94, which tests for flammability and flame retardance of plastic and elastomeric materials. Depending on the application, materials may also require compliance with UL 50 or UL 50E, which define performance criteria for enclosure sealing against dust, moisture, and corrosion. For specialized environments such as high-voltage or chemical systems, Canyon Components also provides materials qualified under other UL certifications for materials for electrical equipment and air duct systems. Our engineering team ensures that each product meets the correct UL category based on its intended application and environmental exposure. If you have any questions or require design assistance, feel free to reach out to the Canyon Components engineering team!

Depending on the specific certification, UL testing can involve a series of mechanical, thermal, and chemical evaluations designed to replicate operating conditions in the field. These include tensile strength and elongation testing, aging and compression set testing, flame propagation analysis, dielectric breakdown, and volume resistivity measurements. For UL 94 flammability, materials are exposed to open flame under controlled conditions to measure ignition time and self-extinguishing behavior. For UL 157, seals are evaluated for resistance to oils, ozone, water, and temperature cycling. Canyon Components’ materials are tested both internally and through UL-recognized laboratories to verify compliance and consistency. Each material batch is validated to ensure that its physical and electrical properties meet or exceed UL-recognized parameters. If you have any questions or require design assistance, feel free to reach out to the Canyon Components engineering team!

UL certified O-rings and gaskets are used in industries where electrical safety, flame resistance, and product reliability are paramount. Key sectors include aerospace, power generation, automotive electronics, renewable energy, HVAC systems, water treatment, and telecommunications. For example, electrical enclosures and switchgear require UL-rated seals that resist arcing and maintain ingress protection (IP) levels over time. In consumer electronics, UL-approved elastomers are used to ensure insulation and thermal stability within compact, heat-generating devices. Canyon Components supplies materials that not only meet UL compliance but also support additional certifications such as RoHS, REACH, and NSF, simplifying global regulatory approvals for manufacturers. If you have any questions or require design assistance, feel free to reach out to the Canyon Components engineering team!

Each UL-recognized material offers unique advantages depending on the application environment. FFKM compounds like Canrez® and Kalrez® provide unmatched thermal and chemical resistance, ideal for high-temperature electronics and chemical systems. FKM offers an excellent balance between flexibility, fuel resistance, and fire safety, making it common in automotive and aerospace assemblies. Silicone and fluorosilicone materials exhibit low compression set, excellent electrical insulation, and wide temperature tolerance, making them ideal for weatherproof enclosures and outdoor electronics. Canyon Components’ UL-certified elastomers are formulated to retain flexibility and flame retardance even after prolonged heat and UV exposure, ensuring reliable sealing performance throughout the component’s service life. If you have any questions or require design assistance, feel free to reach out to the Canyon Components engineering team!

Yes. UL certification directly enhances the safety of equipment by ensuring that sealing materials resist ignition and maintain insulating properties under stress. For electrical enclosures, UL-approved gaskets help prevent moisture intrusion that can cause arcing or corrosion. In systems exposed to high temperatures or potential flame sources, UL 94-compliant seals reduce fire propagation risk. Canyon Components provides materials that combine low flammability, high dielectric strength, and chemical stability, helping customers design safer, longer-lasting equipment that meets international safety standards. For environments with constant exposure to electrical discharge or high current, our silicone and FKM blends are formulated to prevent surface tracking and dielectric breakdown. If you have any questions or require design assistance, feel free to reach out to the Canyon Components engineering team!

Yes. Canyon Components manufactures UL-certified O-rings and gaskets in both AS568 standard sizes and fully customized geometries. We produce molded, die-cut, and extruded parts to fit specific groove dimensions and equipment designs. Custom formulations can also be developed to meet unique UL categories, such as elevated voltage insulation or low smoke emission. Our precision molding capabilities allow for tight tolerances, ensuring consistent compression and contact integrity even in high-stress assemblies. Every custom product is manufactured under controlled conditions with UL-traceable materials and can be supplied with test data and Certificates of Compliance upon request. If you have any questions or require design assistance, feel free to reach out to the Canyon Components engineering team!

Every UL certified seal or gasket from Canyon Components is supplied with comprehensive documentation verifying compliance and traceability. This includes Certificates of Conformance, UL file numbers, batch identification, and material data sheets showing relevant test results for flame resistance, dielectric performance, and environmental exposure. For manufacturers undergoing product certification, we also provide support with UL submission documentation, assisting with test data, process descriptions, and compliance verification. All records are maintained according to UL’s audit and inspection requirements, allowing customers to confidently include our components in their certified systems without additional testing delays. If you have any questions or require design assistance, feel free to reach out to the Canyon Components engineering team!

Absolutely. Our team supports manufacturers in selecting materials, designing seals, and preparing documentation for UL testing and certification. Whether you are developing a new enclosure, connector, or electronic assembly, we can identify compounds that meet required UL categories while optimizing for cost, performance, and manufacturability. Canyon Components collaborates with UL-approved testing laboratories to ensure materials pass all required evaluations before final submission. We also help customers redesign existing parts to meet UL flammability or dielectric requirements without altering form, fit, or function. By guiding customers through every stage of certification, we help accelerate product approval and bring safe, compliant equipment to market faster. If you have any questions or require design assistance, feel free to reach out to the Canyon Components engineering team!

Canyon Components combines decades of material science experience with precision manufacturing and full regulatory compliance. Our UL-certified materials have been validated across multiple categories for flame retardance, electrical safety, and chemical resistance. We provide engineering support, fast lead times, and full traceability, ensuring every product meets both performance and certification standards. Whether you need UL 94-rated silicone gaskets for weatherproof enclosures, UL 157 FKM O-rings for electrical systems, or custom-molded seals for complex devices, Canyon Components delivers components that uphold safety, reliability, and global compliance for critical applications. If you have any questions or require design assistance, feel free to reach out to the Canyon Components engineering team!