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Minseal Style Flexible Graphite Foil

Homogeneous Pure Graphite, Rolls and Sheets

Flexible graphite homogeneous foil or sheets are made from compressed exfoliated mineral graphite, pure graphite carbon, no fillers, no binders. Most flexible graphite in the market has a carbon content ranging from 95% -98%. Minseal brand flexible graphite foil has a high purity of 99% carbon content. Higher carbon content gives the flexible graphite better chemical resistance, better thermal conductivity, and better sealability.

Characteristics and Specs

Heat and fire resistant
Chemical resistant, compatible with most chemicals
Compressible, conformable, low creep relaxation
Thermal conductive, electrical conductive
Working Temperature Range:
Oxidizing Atmosphere, such as air: -400°F to 950°F(-240°C to 510°C)
Mild Oxidizing Atmosphere of most gasket applications: -400°F to 1500° F(-240°C to 850° C)
Non-Oxidizing Atmosphere: -400°F to 5400°F (-240°C to 3000°C)
Thermal Conductivity:
Parallel to Sheet Surface: 960 BTU-in/ft2.h.F (140 W/m.K)
Through Thickness: 36 ft2.h.F (5W/m.K)

Typical Applications

Heat and chemical resistant gasket, seal, liner; sheet lubricant; thermal conductive seal; heat barrier; EMI (electromagnetic interference) shielding and gasketing, heat dissipation, stress sensing, vibration damping, spark plasma sintering(SPS), and other thermal, electronic or electrochemical applications.

Product Styles

2010A Premium Grade (Nuclear Grade)

This grade has a high carbon content of 99.5% minimum (typically 99.8%), very low sulfur and leachable chloride content. It is designed for sealing applications in radioactive environment, nuclear plant, or other applications that require materials of ultra high purity.

2010B Industrial Grade (Fluid Sealing Grade)

This is the most commonly used grade, 99% carbon content. As a gasket material, it is commonly fabricated into Reinforced Graphite Laminate, and widely used in fluid sealing applications: flange gasket, spiral wound gasket, heat exchanger gasket, etc. It can also be used as solid lubricant in metal stamping and forming applications, or as heat liner in industrial furnaces and other heating devices.

2010K Anti-Oxidation Enhanced

Treated with oxidation inhibitor, 99% carbon content, enhanced anti-oxidation property

2020B Slit Ribbon, Spiral Wound Gasket Filler

Narrow ribbon slit from 2010B, 99% carbon. This grade is primarily formulated as spiral wound gasket filler. Packaged in “pancake” shaped narrow rolls.

2010H Self-Adhesive (with PSA Backed)

Industrial Grade with pressure sensitive adhesive backing. Adhesive backing facilitates its installation as a gasket or seal.

Product Sizes and Variants

Thickness: .005 to 1/16″ homogeneous; 1/8″ and up laminated
Width: 60″, 39.4″ standard; any slit width
Standard Roll Length: 100′, 200′ 500′
Standard sheet size: 60″ x 60″, 39.4″ x 39.4″(1m x 1m)