STYLE 2660
Homogeneous Flexible Graphite Sheet
Gasket Sheet eCatalog
Standard Flange Gaskets eCatalog
CONSTRUCTION:
Style 2660 flexible graphite sheet is made from exfoliated graphite flake which is compressed into foil by a carefully controlled calendaring process. In this process, the expanded flake particles are mechanically locked together without the use of fibers, binders or other additives. Sheets of foil are then adhesive bonded and laminated to the required thickness.

APPLICATION / SERVICE:
Style 2660 flexible graphite sheet has pressure-temperature sealability capabilities that are far superior to all asbestos reinforced and non-asbestos reinforced sheet products. It is resistant to chemical attack by virtually all organic and inorganic fluids with the exception of concentrated, highly oxidizing acids.

Gaskets cut from Style 2660 flexible graphite sheet seal with low to moderate bolt loads and because of very low creep relaxation, re-torquing is rarely required. Flexible graphite conforms to irregular flange sealing surfaces and readily flows into flange irregularities enabling it to seal both smooth and coarse surface finishes.

   
SERVICE LIMITS  
Temperature Limits:
Minimum -328°F (-200°C)
Maximum:  
In Air 900°F (480°C)
In Steam 1200°F (650°C)
In Reducing or inert media 5400°F (3000°C)
Pressure Limits: 2000 psi (140 bar)
Physical Properties:
Compressibility 45% (Tested under 5000 psi)
Recovery 20% (Tested under 5000 psi)
Creep Relaxation 5%
Tensile Strength 650 psi
Compressive Strength 35,000 psi
Density 62.4 lbs/ft³
Chemical Composition:
Carbon Content 98% minimum
Total Sulfur 1200 ppm maximum
Leachable Chlorides 50 ppm maximum
Available Sheet Sizes: 39.4" x 39.4"
Thicknesses: 1/64", 1/32", 1/16", 1/8"
NOTE: Rolls, 108’ long, are available in 1/64” and 1/32” thicknesses.  
Properties and application parameters shown are typical and are presented in good faith but no warranty is expressed or implied. This edition supersedes all previous issues and all data is subject to change without notice. 11/96

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