Ideal Tape® general purpose and cold weather plain foil tapes are designed for sealing seams and joints on duct, duct wrap, and pipe insulation systems. They act as a vapor barrier and assure the integrity of the insulation system. Their release liners can be easily removed for quick application on the job site. This line of tapes includes products that are UL Classified, ULC Classified, UL 723 Rated, and U.S. Coast Guard Approved. Our plain foil tapes provide the durable, long-term bond you need to ensure your hard work lasts.