STYLE 2661 Flexible Graphite Sheet 316ss Foil Inserted

Gasket Sheet eCatalog

Standard Flange Gaskets eCatalog

CONSTRUCTION
Style 2661 is a flexible graphite sheet reinforced with a 316ss foil, .002” thick. The 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 with the 316ss foil core in the center.

APPLICATION / SERVICE
Style 2661 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 2661 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	35% (Tested under 5000 psi)
Recovery	18% (Tested under 5000 psi)
*Creep Relaxation*	12%
*Tensile Strength*	5000 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"

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