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3R 872
CARBON FIBERS / NBR BINDER

ISO 9001 : 2000 Certified
The 3R 872* is a compressed non-asbestos sheet gasket materiel produced from carbon fibers and graphite, bonded with nitrile rubber (NBR).*

Applications //

It is a premium grade, multi-service gasket sheet, designed to handle the extremes of pressure and temperature, and it cuts very easily and cleanly. The versatility of this sheet enables a plant to standardize on one sheet for a multiple of applications and avoid the confusion of having to choose from several different sealing sheets. It is suitable for service handling the following general media categories:


- Mild inorganic acids	- Mild organic acids	- Concentrated alkalis
- Diluted alkalis	- Water	- Brine
- Saturated steam	- Industrial gases	- Animal oils
- Synthetic oils	- Vegetable oils	- Petroleum and derivatives
- General chemicals	- Aromatic solvents	- Chlorinated solvents
- Oxygenated solvents	- Neutral solutions	- Refrigerants
- Air	- Aliphatic solvents

Technical data //


Temperature limits	Maximum Continuous Max	840°F (450°C) 518°F (270°C)
Pressure limits (vacuum)	Maximum Continuous Max	1900 psi (130 bar) 1000 psi (70 bar)
ASTM Line Call Out F104	F712120E23M6
Color	Black
Available sheet size	Thickness Sheet Sizes	1/64" to 1/8" 59" x 63", 59" x 126", 118" x 126"


ASTM Test Method	Property	Value
-	Density	106 lb/ft³ (1.7 gg/cc)
F36	Compressibility	5-15%
F36	Recovery	min 50%
F38	Tensile Strength Across Grain	2175 psi (15 N/mm²)
F495	Ignition Loss	max 50%
F146	Thickness Increase After 5 Hour Immersion - ASTM IRM 903 @ 300°F (150°C) - ASTM Fuel B @ 77°F (25°C)	max 15% max 15%
F146	Weight Increase After 5 Hour Immersion - ASTM IRM 903 @ 300°F (150°C) - ASTM Fuel B @ 77°F (25°C)	max 15% max 15%
F38	Creep relaxation	22%
	Torque retention (DIN 52913)	35 N/mm²
F37	Sealability at 1000 psi	0.2 ml/h

The P x T graph shown above indicates the service limits for this sheet considering pressure and temperature simultaneously...(Tests were performed with nitrogen on 1.6mm thick sheet). The "normal" curve represents the common usage area for this sheet while the "maximum" curve indicates the maximum limits. For applications near or above the "maximum" curve, contact Industries 3R inc.

94-07/rev.2

	N.B. The information, details, dimensions and values indicated are to our best knowledge. We recommend testing according to local conditions. The specifications are subject to change without notice.
	55, Route 116 West, Danville (Quebec) J0A 1A0 Tel.: (819) 839-2793 Fax: (819) 839-2797 • www.industries3r.com

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Industries 3R

3R 872 CARBON FIBERS / NBR BINDER

3R 872
CARBON FIBERS / NBR BINDER