Choose NASHUA for the ultimate high-heat seal-3.8 mil aluminum foil backed and rated -50°F to 500°F, this tape delivers rugged durability without sacrificing flexibility. Its acrylic adhesive provides instant bonding and low-VOC emission, compliant with LEED standards. Ideal for sealing seams, welding applications, and composite assembly in both indoor and outdoor environments. The split kraft paper liner allows for fast, mess-free application. Trust NASHUA to handle the heat-professionals' choose for flue installations that demand reliability and performance. Featuring durable aluminum backing and high-adhesive acrylic, it's tailored for high-efficiency furnace and plastic flue systems.