Foster 90-66 Two-Part, Cryogenic, Vapor Stop Sealant

Foster 90-66 Two-Part, Cryogenic, Vapor Stop Sealant

FOSTER Cryogenic Coating is a two-part, black, elastomeric coating designed for use in cryogenic applications as a vapor stop sealant. It is suitable for application to polyurethane foam, polyisocyanurate (PIR) foam, cellular glass, fibrous glass and aerogel insulations in conjunction with aluminum, steel, wood and masonry construction materials.

Cryogenic Coating has excellent resistance to moisture, water vapor and other gases. It is an excellent vapor stop material for use on cryogenic pipe lines and cryogenic equipment.

Cryogenic Coating is also suitable for bonding and sealing lap joints in plywood and metal and for lagging glass cloth to itself and other surfaces. It can function both as a vapor barrier and adhesive where at least one substrate is permeable to allow for solvent evaporation.

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Product Description

COLOR:
Black

APPLICATION CONSISTENCY:
Brush, spray or roller

AVERAGE WEIGHT/U.S. GALLON (ASTM D1475):
Mixed – 9.6 lbs. (1.15 kg/l)

AVERAGE NON-VOLATILE (ASTM D2369):
Mixed – 65.0% by volume (73.5% by weight)

COVERAGE RANGE:
Subject to the type of surface being coated.
3.0 to 3.5 gal./100 sq. ft. (1.22 to 1.43 l/m2) on a smooth non-porous surface. Porous or rough surfaces will require higher gallonage to attain required dry thickness
Dry Thickness: 0.031 to 0.036 in. (0.79mm to 0.91mm)
Equivalent Wet Coverage: 0.048 in. to 0.056 in. (1.22 mm to 1.42 mm)

MIXING RATIO:
1:1 by volume

BONDING TIME RANGE:
20 – 60 minutes

POT LIFE:
Varies with temperature.
6 – 9 hours at 77°F (25°C)

DRYING TIME 73°F (23°C) 50% RH:
Temperatures below 70°F (21°C) and adhesive applications prolonging dry time will require longer cure times.
Through: 48 Hours
Full Cure: 2 Weeks

SERVICE TEMPERATURE LIMITS:
Temperature at coated surface.
-320°F to 180°F (-196°C to 82°C)
Up to 250°F (121°C) intermittent

WATER VAPOR PERMEANCE (TYPICAL AVERAGE):
ASTM F1249: 0.01 perms (0.0066 metric perms) at
0.020 – 0.025 in. (0.51 – 0.64 mm) dry film thickness tested at 100°F (38°C) and 90% RH

WET FLAMMABILITY (ASTM D93):
Flash point: 75°F (24°C)

COMBUSTIBILITY (DRY):
Combustible

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General Insulation Company Inc. is an insulation supplier / insulation distributor that stocks and fabricates a wide variety of industrial and commercial air barrier, vapor barrier, moisture and water barrier products for the construction market.

Foster 90-66 Cryogenic Sealant Technical Data Sheet

Foster 90-66 Cryogenic Sealant Safety Data Sheet PART A

Foster 90-66 Cryogenic Sealant Safety Data Sheet PART B