Demonstration/Validation of Hazardous Air Pollutant-Free Torque Seal Inspection Lacquer

Report No. ARL-TR-4863
Authors: Faye R. Toulan, Felicia Levine, John J. La Scala, Leslie Hasenbein; Genie Jones; Ivan Davis
Date/Pages: July 2009; 28 pages
Abstract: The U.S. Army uses numerous adhesives and sealants among other coating materials that contain significant amounts of hazardous air pollutants (HAP). The U.S. Army has determined that it is much more cost effective to reduce or eliminate HAP emissions from coatings operations rather than using emissions control devices. This work examines laboratory and field demonstration/validation of one highly used sealant, Torque Seal. The adhesives and sealants thrust area of the Sustainable Painting Operations for the Total Army program has identified a HAP-free alternative to Torque Seal containing ethanol as the carrier solvent. Laboratory testing including adhesion, resistance to fluids, resistance to humidity, and drying time has validated that the HAP-free sealant performs very similarly to the baseline Torque Seal containing methanol (HAP). Furthermore, a demonstration/validation study at Fort Rucker, AL, using a UH-1 helicopter rotor shows that the HAP-free sealant has performed as well as the Torque Seal.
Distribution: Approved for public release
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Last Update / Reviewed: July 1, 2009