Foster® 90-61 Cryolar™ 1K Vapor Stop Sealant
FOSTER CryolarTM 1K VAPOR STOP SEALANT
FOSTER CryolarTM 1K Vapor Stop is a ready to use, one component, vapor stop sealant for use in cryogenic applications. It is specially formulated with select synthetic rubbers to form an elastomeric, vapor barrier film capable of spanning the temperature ranges found in cryogenic applications including LNG, ethylene and ammonia production It is suitable for application to PUR and PIR foam, cellular glass and other rigid insulations in conjunction with aluminum, steel and masonry construction materials.
CryolarTM 1K Vapor Stop has excellent resistance to moisture and water vapor, forming a vapor tight seal from the cryogenic pipe surface to the ambient outer insulation surface.
CryolarTM 1K Vapor Stop is designed for vapor stop applications on insulated cryogenic pipelines and equipment. It can also be used on very low temperature applications to seal seams where a water vapor tight insulation system is required.
CryolarTM 1K Vapor Stop contains no lead, asbestos, mercury, or mercury compounds.
Store and apply between 40°F (4°C) and 100°F (38°C). Always test plastic materials for compatibility when using a solvent base product. Do not use on polystyrene insulation. Always allow the sealant to dry completely before covering with impermeable materials. Not suggested as an exposed sealant for extended periods of time. Use caution when installing peel and stick membranes directly over 90-61. Removing or repositioning will damage the vapor stop surface. TM TradeMark of H.B. Fuller Construction Products Inc.
Manufactured at an ISO 9001 Quality System Certified Facility
AVERAGE WEIGHT/U.S. GALLON (ASTM D 1475):
9.3 lbs. (1.11 kg/l)
Average non-Volatile (ASTM D 2369)
45.0% by volume 57.5% by weight
COVERAGE RANGE (FSTM 72):
(Subject to type of surface being coated)
Dry Thickness: 0.025 to 0.028 in. (0.64 mm to 0.71mm) Equivalent Wet Coverage: 0.056 in. to 0.064 in. (1.42 mm to 1.63 mm) 3.5 to 4.0 gal. /100 sq. ft. (1.43 to 1.63 l/m2 ) on a smooth non-porous surface. Porous or rough surfaces will require higher gallonage to attain required dry thickness.
DRYING TIME 73°F (23°C) 50% RH (ASTM D 1640):
Temperatures below 70°F (21°C) may require longer dry times. Touch: 2-3 hours Through: 24 hours
SERVICE TEMPERATURE LIMITS (FSTm203):
(Temperature at coated surface) Minus 320°F to 250°F (-196°C to 121°C)
WATER VAPOR PERMEANCE:
ASTM F 1249: < 0.01 Perm (<0.0066 Metric Perm) at 0.020-0.025 in. (0.51-0.64 mm) dry film thickness. When tested at 100°F, 90% RH.
SAFETY (ASTM D 93):
Flash point 115°F (46°C)
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