3M FSK Facing Tape 2C110 is an adhesive tape that is used for sealing and patching FSK-faced duct wrap insulation, as well as a vapor seal for reinforced aluminum faced fiberglass, mineral wool thermal insulation, and sheet metal. Made with foil/scrim/kraft (FSK) lamination that is coated with a solvent acrylic, pressure-sensitive adhesive, this tape performs at temperatures as low as -40 °F (-40 °C). While designed for cold weather, it also offers excellent performance in demanding heat and humidity conditions. It easily conforms to irregular surfaces and shapes and the split back liner offers easy removal for a simple application process. This tape meets the UL723 flame/smoke rating, as well as the ASTM specification C1136, Type II and IV, for safe use. For best results, store tape in a cool, dry environment. Achieve a durable seal during demanding and cold weather applications with 3M FSK Facing Tape 2C110.Vapor seal on FSK faced insulation or sheet metal ducts with split back liner for easy removal