RT-631 FSK
Cold Weather Foil Scrim Kraft Tape
Product Description
3-way Foil-Scrim-Kraft backing, combined with aggressive cold weather solvent acrylic adhesive, protected by an easy-release silicone release paper. Alternative to 1525C W (FSK)
 3-way Foil-Scrim-Kraft backing provides excellent reflection of both heat and light.
Cold weather adhesive with moderate adhesion offers good sealing and bonding on Foil-Scrim-Kraft Facing joints and seams in HVAC duct work application.
Good aging resistance both indoors and outdoors.
Low moisture vapor transmission rate offers excellent sealing and patching performance
Application recommended

HVAC industry for joining and sealing Foil-Scrim-Kraft Facing laminated fiberglass blanket / duct board joints and seams; joining and sealing flexible air duct seams and connections. May also be used for other industrial uses requiring a tape with these characteristics and benefits.

Typical Physical Properties
Backing Thickness 120 micron 4.8 mil PSTC-133 / ASTM D 3652
Total Thickness: 170 micron 6.8 mil PSTC-133 / ASTM D 3652
Tensile Strength 120 N / 25mm 27.3 lb/in PSTC-131 / ASTM D 3759
Peel Adesion to Steel 16 N / 25mm 57.6 oz./in. PSTC-101 / ASTM D 3330
Elongation 2.00% 2.00% PSTC-131 / ASTM D 3759
Applying Temperature  -20  +40°C  -4~ +105 F
Service temperature  -35  +120°C  -31 ~ +248 F
Storage Conditions & Shelf life
12 months when stored at 21C (70F) / 50% relative humidity out of direct sunlight.