Flexicarb (Graphite) Sealing Material

Flexicarb is a pure exfoliated graphite material exhibiting excellent sealing characteristics, withstanding a wide range of temperatures, pressures and chemicals.

This homogeneous material is free of respirable fibers, binders and additives. Standard grades are 95% to 98% pure, with a nuclear grade available at 99.9% purity.

Flexicarb is extremely conformable giving it the ability to flow into flange surface imperfections. Its low permeability and chemical resistance make it an ideal choice as a sealing material.

The high purity of Flexicarb is chemically inert to most media. (Note its limitations on oxidizing compounds.)

Flexicarb covers a wide temperature spectrum, from cryogenics through elevated temperatures. It can be supplied with an inorganic passivating inhibitor to increase its oxidation and corrosion resistance. Recent experiences and tests have shown that Flexicarb will oxidize over time. Care should be taken when considering the use of Flexicarb foil for applications above 650°F (330°C).  

Temperature Range for Flexicarb Material

Cryogenics to 5400°F (3000°C) in an inert or reducing atmosphere. Cryogenics to 930°F (500°C) in and oxidizing atmosphere.*

Pressure Range for Flexicarb Material

Recommended for Class 150 and 300 applications for all above except Flexicarb WR which is recommended for Class 150 only.

* Consult technical staff.