Fire-Safe Gasket Solutions

In high-risk industrial environments, gasket performance can be a critical line of defense. Durlon fire-safe gasket solutions are engineered to help protect people, equipment and facilities from hazardous leakage during fire exposure.

Designed for demanding process applications, Durlon fire-safe products support sealing integrity through burn, cool-down and thermal shock conditions, helping operators maintain confidence when reliability is non-negotiable.

Fire-tested. Field-proven. Engineered for critical service.
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Engineered Protection Under Extreme Conditions

When fire exposure occurs, sealing systems must do more than perform under normal operating conditions. They must help reduce leakage risk during extreme temperature events and after rapid thermal changes.

Durlon® fire-safe gaskets combine advanced materials, engineered designs and proven sealing technologies to support:
• Fire-safe sealing performance
• Safety-focused system design
• Compliance with recognized industry standards
• Operational confidence in critical service
• Protection for piping, valves, flanges and process equipment

Third-Party Tested and Validated

Durlon fire-safe products are tested by Yarmouth Research and Technology, an independent laboratory specializing in chemical process equipment. Test results are validated by a Professional Engineer, providing added confidence for manufacturers, operators and end users.

Durlon fire-safe gasket products are tested or certified to leading standards, including:
• API 6FB
• API 6FA
• API 607
• ANSI/API Standard 607
• Shell Specification MESC SPE 85/203
• PVRC SCR Flexible Graphite Specification

Fire-Safe Gasket Products

Durlon® 8300 is a premium compressed sheet gasket material designed for steam and hydrocarbon services in refining, petrochemical and power generation applications. Common services include steam, hydrocarbons, oil, water, mild alkalis, mild acids and solvents.

Fire Test Certification: API 6FB, 6” Class 300
Performance: Meets API 6FB tightness criteria during burn and cool-down.

Durlon® 8500 is designed for process industries requiring dependable sealing across a wide range of fluids and gases. Suitable for oils, water, steam, new-generation refrigerants, dilute acids and alkalis, and many other liquids and gases.

Fire Test Certification: API 6FB, 6” Class 300
Performance: Meets API 6FB tightness criteria during burn and cool-down.

Durlon® 8900 is engineered for demanding service conditions up to 496°C / 925°F, with continuous operating temperatures from -40°C to 400°C / -40°F to 752°F. Suitable for saturated and superheated steam, oil, dilute acids and alkalis, hydrocarbons and solvents.

Fire Test Certification: ANSI/API Standard 607, Sixth Edition, 6” Class 300
Measured Leakage: 0 ml/min against a maximum allowable external leak rate of 150 ml/min.

Durlon® 9000 is designed for process piping and equipment where resistance to highly aggressive chemicals is required. Its filler shape helps prevent wicking that can contribute to flange corrosion and conforms to FDA requirements. Common applications include chemical processing, pulp and paper, food and beverage, and general industrial service.

Fire Test Certification: API Standard 6FA, Third Edition, 6” Class 300
Test Exposure: External flame exposure at 875°C / 1607°F average for 30 minutes.

Durlon® CFG is engineered for severe service conditions. Its proprietary corrugation design provides strong sealing and recovery characteristics in refining, chemical, petrochemical, and pulp and paper applications.

Fire Test Certification: Modified API 607
Temperature Suitability: Up to 850°F / 450°C in air and 1200°F / 650°C in steam.

Durlon® HT1000® is a high-temperature gasket material made with phlogopite mica paper impregnated with an inorganic binder. With less than 4% weight loss at 800°C / 1472°F, it is engineered for extreme temperature sealing performance up to 1000°C / 1800°F.

Fire Test Certification: API 607, 4th Edition with Exxon modifications

Measured Leakage: 7.3 ml/min against a maximum allowable external leak rate of 300 ml/min.

Durlon® Durtec® features a corrugated metal core bonded on both sides with soft covering layers, typically flexible graphite. Its patented core technology provides strong mechanical support, while the virtually un-crushable corrugations help improve sealing performance compared to conventional corrugated metal-core gaskets.

Fire Test Certification: Modified API 607
Also Meets: Shell Specification MESC SPE 85/203 and PVRC SCR Flexible Graphite Specification for FG 600 material.

Durlon® DRI-FG SWG is made from an alternating combination of engineered metal strip and compressible filler material. The engineered metal strip acts as a spring under load, producing a resilient seal under changing service conditions.

Fire Test Certification: API Standard 6FB, Fourth Edition, 6” Class 300
Also Meets: Shell Specification MESC SPE 85/203 and PVRC SCR Flexible Graphite Specification for FG 600 material.

Durlon® DRI-ETG SWG is designed to deliver resilient sealing performance under varying operating conditions. Its preformed engineered metal strip and compressible filler material create an excellent seal when compressed.

Fire Test Certification: API 6FB, Fourth Edition 2019, Type 2 Offshore Test
Fire Test Certification: API 6FB, Fourth Edition 2019, Type 1 Onshore Test
Fire Test Certification: API 607, 4th Edition with Exxon modifications, 6” Class 300

Industry Applications

Durlon fire-safe gasket solutions are built for industries where leakage is not an option, including:
• Refining
• Petrochemical processing
• Chemical processing
• Power generation
• Pulp and paper
• Food and beverage
• Pharmaceutical
• General industrial service

Why Choose Durlon Fire-Safe Gaskets?

Durlon provides a broad portfolio of compressed sheet, spiral wound, corrugated, mica-based and isolation gasket technologies for critical fire-safe applications.

Key Advantages

Tested to recognized industry standards
Products are tested to leading API, ANSI/API, Shell and PVRC specifications.
Designed for critical service
Engineered for fire exposure, cool-down and thermal shock conditions.
Broad material portfolio
Solutions available for steam, hydrocarbons, aggressive chemicals, high temperatures and severe service conditions.
Third-party validation
Independent laboratory testing and Professional Engineer validation provide added confidence.
Built for demanding industries
Suitable for refineries, chemical plants, power generation facilities, petrochemical operations and other process environments.

Safety Starts at the Seal

In critical piping and equipment systems, the right gasket can help reduce the risk of hazardous leakage during extreme events.
Durlon® fire-safe gasket solutions are engineered to deliver proven sealing integrity when safety matters most.

Need help selecting the right fire-safe gasket for your application?
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