3R887F

Graphite sheets

The 3R 887F is a flexible graphite sheet reinforced with a 316ss foil, 0.002" thick. The flexible graphite sheet is made from exfoliated graphite flakes which are 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. The resulting sheets are then laminated together with an adhesive to obtain the required thickness.

Applications

This flexible graphite sheet has pressure-temperature sealability capabilities that are far superior to all 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 3R 887F seal with low to moderate bolt loads and because of very low creep relaxation, re-torquing is rarely required. This material conforms to irregular flange sealing surfaces and readily flows into flange irregularities enabling it to seal both smooth and coarse surface finishes.

Specifications

Service limits

Temperature Limits
Maximum
In air -240 °C à 510 °C (-400 °F à 950 °F)
Mild oxidizing environnement -240 °C à 850 °C (-400 °F à 1500 °F)
Non oxidizing environnement up to 980 °C (up to 1 800 °F)
Physical Properties
Compressibility (ASTM F-36)% 40
Recovery (ASTM F-36)% 16
Creep Relaxation (ASTM F-38) Less than 5%
Chemical Composition
Carbon Content 99% Minimum
Ash 0.8% Maximum
Leachable chloride 30 ppm maximum
Available Sheet Sizes
Thickness 1/32", 1/16", 1/8"
Sheet Sizes 39.4" X 39.4", 60" X 60 "
N.B. The information, details and values indicated are to the best of our knowledge. We recommend to conduct tests according to local conditions. The data is subject to some variations without notice.