Foster® 85-20 Spark-Fas® Adhesive
FOSTER ® SPARK-FAS ® ADHESIVE
Foster ® Spark-Fas ® Adhesive is a quick-setting, non- flammable, fire-resistive, synthetic elastomer adhesive used to adhere duct wrap, fibrous glass or mineral wool insulations (up to 6 lbs. density) to galvanized steel and aluminum air conditioning or hot air ducts, where a fire-resistive dry film is required. Non-flammable chlorinated solvents eliminate explosion and fire hazards during application.
Spark-Fas Adhesive will adhere insulation to wood and concrete. In this application the coverage may not be as great as shown at left.
Spark-Fas Adhesive gives superior service when it is used as a contact adhesive to cement the laps of aluminum foil, FSK, ASJ, and FRK facings.
Spark-Fas Adhesive meets ASTM C 916, Type I (ASC-A-7001, Type I) requirements.
Spark-Fas Adhesive meets MIL-A-3316C, Class 2 grade A test requirements.
Spark-Fas Adhesive meets NFPA 90A and 90B 25/50 requirements.
Spark-Fas Adhesive is produced under the classification and follow- up service of Underwriter's Laboratories, Inc.
Spark-Fas Adhesive contains no asbestos, lead, mercury, or mercury compounds.
Store and apply between 40ºF (4ºC) and 100ºF (38ºC). Always test plastic and painted materials for compatibility when using a solvent base product. Do not use with flexible PVC. Make certain this product is completely dry and the area free from solvent odor if food is involved.
AVERAGE WEIGHT / U.S. GALLON (ASTM D 1475):
10.8 lbs. (1.29 kg/l)
AVERAGE NON-VOLATILE (ASTM D 2369):
42.5% by volume (42% by weight)
COVERAGE RANGE (FSTM 72):
(Subject to type of surface and nature of material being bonded.)
For insulation attachment:
200 sq. ft./gal. (4.9 m2 /l) 0.008 in. wet film thickness (0.2mm)
For lap sealing:
75 sq. ft./gal. (1.8 m2 /l) 0.021 in. wet film thickness (0.5mm)
Averages 500 lineal feet (152 m) of 2 in. (5 cm) wide band of adhesive.
BOND TIME RANGE (FSTM 66): For insulation attachment:
0 to 15 minutes For lap sealing: 2 to 10 minutes
SERVICE TEMPERATURE LIMITS (FSTM 70):
(Temperature at coated surface) -20ºF to 180ºF (-29ºC to 82ºC)
WET FLAMMABILITY (ASTM D 93):
No flash to boiling, 98ºF (37ºC)
SURFACE BURNING CHARACTERISTICS (ASTM E 84):
Flame Spread: 15
Smoke Developed: 0
Tested at coverage rate of 200 sq. ft./gal. (4.9 m2 /l).
Applied to 1/4 inch (6.4 mm) inorganic reinforced cement board. The flame spread may vary at different product thicknesses and/or when applied over other surfaces. TM TradeMark of H.B. Fuller Construction Products Inc.
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