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K-Flex aluminum foil pipe insulation tape is perfect for sealing joints and seams in HVAC ductwork in both indoor and outdoor settings. Its malleable and pliable foil backing allows it to conform to most irregular surfaces, making it a great choice for many applications. With a low moisture vapor transmission rate, this insulation tape acts as a vapor barrier, providing good tensile strength and keeping your spaces comfortable. Easy to install on dry, clean surfaces, the K-Flex aluminum foil pipe insulation tape helps protect against air leaks, saving energy and improving the overall performance of your HVAC system. Whether you're looking to seal gaps or create a barrier against moisture and cold weather, this tape is the solution for you!