Foster® 81-33 Fire Resistive Adhesive
FOSTER FIRE RESISTIVE ADHESIVE
FOSTER Fire Resistive Adhesive is a superior adhesive for cementing thermal insulation to all structural surfaces. It is quick-setting, with good specific adhesion to iron, steel, aluminum, and most thermal insulations. Can be used without mechanical fastening for marine hull insulation.
Fire Resistive Adhesive is the preferred adhesive for use with rigid polyurethane insulations. It can be used as a fabricating adhesive in making fittings with polyurethane insulation, and as an adhesive to attach insulation to equipment surfaces. Bonds of polyurethane to itself made with 81-33 are stronger than the base insulation.
Fire Resistive Adhesive withstands continuous surface temperatures up to 300°F (149°C), but it has been subjected to higher temperatures for short intervals with good results. Its excellent resistance to water and high humidity makes it a good sealing compound for joints and seams of insulation on cold water piping and equipment.
Fire Resistive Adhesive meets the requirements of Military Specification MIL-A-3316C, Class 3, Grade A.
Fire Resistive Adhesive contains no asbestos, lead, 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. Make certain this product is completely dry, and the area is free from solvent odor if food is involved. Galvanized metal must be primed with Foster 40-26. If used between impermeable surfaces, drying time will be extended.
WEIGHT PER U.S.GALLON: (ASTM D 1475):
13.2 lbs. (1.58 kg/l)
APPLICATION NON-VOLATILE (ASTM D 1644):
66% by volume (80% by weight)
(Subject to type of surfaces and nature of material being attached) 25 to 40 sq.ft./gal. 0.063 in. to 0.040 in. wet thickness. (0.6 to 1.0 m2 /l at 1.6 to 1.0 mm wet)
BONDING TIME RANGE (FSTM 66):
2 to 10 minutes
SERVICE TEMPERATURE LIMITS:
(Temperature at coated surface) Minus 75°F to 300°F (-59°C to 149°C)
WET FLAMMABILITY (ASTM D 3278):
Flash Point 110°F (43°C)
TM TradeMark of HB Fuller Construction Products Inc.
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