Materials Engineered for High Temperatures | Thermal Quality

High Temperature Resistance Materials

The Northglenn Colorado division of JBC Technologies (formerly Die Cut Technologies) provides a variety of high-temperature materials including Fiberfrax—a lightweight, resilient, asbestos-free gasket material that has excellent thermal characteristics.

It is made from an alumina-silica combination. It possesses high-temperature stability, low thermal conductivity, low heat storage, thermal shock resistance, and combines the high heat resistance of refractory ceramics with the weight and resiliency of paper.

It is easy to handle and can be die-cut to any shape or size. Its temperature tolerance ranges from 1300ºF to 2300ºF.

Flexible Graphite

Flexible graphite gaskets are able to withstand more aggressive chemical environments and higher pressures than standard compressed non-asbestos gasket materials. Graphite has outstanding resistance to corrosion against a wide variety of acids, alkalis and salt solutions, organic compounds, and heat transfer fluids.

Pure graphite can handle temperatures up to 5000°F. The Northglenn Colorado division of JBC Technologies (formerly Die Cut Technologies) provides Garlock®, Thermoseal®, and Grafoil® brands of graphite-based gasket materials.


Viton is the trade name for a fluoroelastomer that was developed by DuPont in 1957. This high-performance gasket material is an excellent selection for applications that are challenging, demanding, and require a long-lasting seal.

Viton (fluoroelastomer) is often used in the automotive industry, chemical industry, fluid power industry, and aerospace industry due to its flexibility, reliability, and its ability to perform over a wide temperature range.

Viton has a variety of traits that make it ideal for both low and very high-temperature and corrosive applications. It is resistant to oil, heat, and a broad range of acids. It’s excellent for sealing gases and aliphatic hydrocarbon fluids. Fungus, mold, weather, atmospheric oxidation, and sun do not affect Viton (fluoroelastomer).


PTFE (Teflon®) gaskets are custom cut for a wide range of industries and applications. We convert with rule dies, digital knife, or laser cutting.

Polytetrafluoroethylene (PTFE) is DuPont's trademark of Teflon®. Teflon (PTFE) has excellent dielectric properties and provides excellent thermal insulation with an operating temperature range of 400°F to 500°F. PTFE is the most chemically resistant plastic known and is unaffected by most corrosive liquids, vapors, and gases.

It conforms to both FDA and AMS specifications, making it acceptable to both medical and food production industries. The three basic types of PTFE (Teflon®) materials include Virgin Teflon®, Filled Teflon®, and Expanded Teflon®.

Silicone Gaskets

Die Cut manufactures custom silicone gaskets from silicone in its various forms, including solid silicones, expanded silicone sponge, and silicone foams. We also produce specialty gaskets from electrically conductive silicones and chemically resistant fluoro silicone.

Silicone has excellent weathering properties and handles both hot and cold temperature extremes; resists ozone and oxygen attack. Long service life can be expected at 200°F to 400°F. Because silicone is odorless and tasteless, it is ideal for certain surgical and food processing applications.

Contact us today to find out for yourself what makes JBC Technologies (formerly Die Cut Technologies) different when it comes to high-quality production.

High Temperature Materials


Grafoil Gaskets


High Temperature Applications


Petro Chemical Applications


Viton Fluoroelastomer


Teflon (PTFE)


Silicone Gaskets

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