Ideal Tape

Ideal Tape - 3491AW03000050APABI - 491 FSK Tape, 3" x 50 Yards

Item: IDE491350A
MFG: 3491AW03000050APABI
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491 FSK Tape, 3" x 50 Yards


491 FSK
Ideal Tape's 491 FSK is a pressure sensitive tape manufactured with the FSK Foil, skrim and kraft combined with a pressure sensitive adhesive and release liner. 491D is the same product in circular disc form provided in a continuous roll.

Suggested end use
491 FSK is used for sealing cold and dual temperature duct seams and joints where FSK is the basic insulation facing. The pre-cut discs (491D) are applied over washers and cupped pin heads. They can also be used to cover any accidental punctures in the facing. The discs provide an excellent vapor seal when applied to clean, dry surfaces. Use of applicator (provided) will give best results.

  • Performance All Weather Formula adhesive system provides permanent bond to FSK insulation facing
  • Scrim layer bends with the primary facing providing integrity to the insulation and a strong, finished, appearance
  • Release liner provides easy removal for efficient application on the job site
  • Available pre-cut discs reduce on site labor and provide an excellent vapor seal. For best results please use the provided applicator

California residents: see Proposition 65 Warning

Features and Specification

Height 3.0000
Functions Used For Sealing Cold and Dual Temperature Duct and Pipe Systems Where the Basic Insulation Uses FSK Facing
Length 6.0000
Cubic Measurement 0.0625
Approvals UL 723
Brand Ideal Tape
Composition Reinforced FSK
Dimensional Weight 1.0000
EAN 0078204310430
Maximum Temperature 180°F (82.2°C)
Width 6.0000
Type Backing: FSK(Foil/Skrim/Kraft); Adhesive: Performance Rubber
Standards UL 723 rated (10/10 Flame/Smoke Rating)
Storage Temperature 60°F to 80°F (15.5°C to 26.6°C)
Tensile Strength 45 lb/in
Thickness 7 Mils
UL Listed Yes
UL Recognized Yes
UPC 078204310430
UV Resistant Yes
Size 3" x 150'
Application Temperature 10°F to 180°F (-12.2°C to 82.2°C)
Package Height 3.0000
Package Length 6.0000
Package Weight 1.7000
Package Width 6.0000
Shelf Life 12 months under storage conditions of 60° F to 80° F and 50% relative humidity away from direct sunlight.
Adhesion Strength 85 oz./in width
Application Seals Ducts
Weight 1.7000


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