Flex Seal 450

Ideal Tape Flex Seal™ 450 is a printed polypropylene film with a high performance acrylic adhesive system. 

Suggested end use

Flex Seal 450 was specifically designed for use as a closure system on flexible air ducts and connections. It provides a high performance, permanent seal and delivers vapor barrier protection.  It can be used for sealing metal duct and metal connections in HVAC systems.    Flex Seal 450 is also UL 181B-FX approved.


Adhesive typeAcrylic
Total thickness3 mils (0.08mm)
Tensile strength30 lb/in (131 N/25mm)
Adhesion50 oz/in (14 N/25mm)
ColorBlack with silver print and silver metallized with black print

( Id: 32 )