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Garlock® high temperature gasketing excels in the harshest conditions—intense heat and high pressure. These high performance gasket materials have been laboratory tested for fire safety. They maintain an effective seal during pressure and temperature fluctuations, and their excellent torque retention lowers leakage rates and reduces maintenance time. THERMa-PUR® style gaskets provide extreme temp protection using a unique formulation with Garlock’s traditional quality.

Garlock High-Temperature Gaskets

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Material Number Description Datasheet
THERMa-PUR® 4122 Style 4122 cut gaskets and sheet provide resistance to extreme temperatures, oxidation, corrosion and chemicals. THERMa-PUR® 4122 Datasheet
Style 9800 Maintains its seal during pressure and temperature fluctuations. Carbon fibers with a SBR binder. Style 9800 Datasheet
Style 9850 Long-lasting seal, which minimizes cold flow and creep relaxation problems. Carbon fibers with a nitrile binder. Style 9850 Datasheet
Style 9900 Passed Garlock® fire tests and is American Bureau of Shipping (ABS) Fire Safe Type Approved. Style 9900 Datasheet


Frequently Asked Questions: Garlock High-Temperature, High-Pressure Gaskets


What temperature range can Garlock high-temperature gaskets handle?

Depending on the specific material, Garlock gaskets can withstand continuous service up to 850°F (450°C) with peaks higher in certain formulations, such as graphite-based gasketing. Always confirm the exact temperature limits against the selected product’s datasheet.

What pressure ratings do Garlock high-pressure gaskets cover?

Garlock high-pressure gasket families are designed for Class 150 through Class 2500 flanges, with maximum operating pressures exceeding 5,000 psi (345 bar) in some applications. Performance depends on flange design, bolt load, and gasket style.

Where are Garlock high-temp and high-pressure gaskets commonly used?

These gaskets are widely used in oil & gas, chemical processing, power generation, refining, and pulp & paper industries—anywhere aggressive media, high pressure, and thermal cycling make standard gaskets fail prematurely.

Are Garlock high-performance gaskets asbestos-free?

Yes. All Garlock high-temperature and high-pressure gaskets are asbestos-free and manufactured in compliance with global health and safety regulations. Many are also certified to meet API, ASME, TA-LUFT, and ISO emissions standards.

How do I choose the right Garlock gasket for my application?

Selection depends on media compatibility, temperature, pressure, and flange design. Products like BLUE-GARD®, GRAPH-LOCK®, and GYLON® are tailored to different extremes. An application engineering review or materials compatibility check is recommended before final selection.