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Scotch-Seal Polyurethane Sealant 540 and Scotch-Seal Polyurethane Adhesive Sealant 560 are one-component, moisture-curing products that form permanent elastic bonds. Both products meet Federal Railroad Administration requirements pertaining to surface flame spread, rate of smoke generation and toxic gas production, making them suitable for the transportation and metalworking markets.
For more information, visit http://www.3m.com/adhesives or call (800) 567-1639.