Intumescent Wrap Strip

Prevent The Spread of Fire Around Pipe Passages and Pass-Throughs

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What's special about these fire wraps?

  • Designed to stop the spread of fire through floors, ceilings and walls via pipes for safety and security
  • Fast-acting intumescent technology expands to over 24 X its original size to seal out smoke and flame
  • Saves money by using 50% less wrap than other brands
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ULUL Classified

Specified Technology Inc's wrap strips provide you with a foolproof solution for preventing flame and smoke spread in through-ways. These easy to install intumescent strips expand to 24 times their original size when exposed to temperatures over 250°F, to completely seal cavities in walls, ceilings, and floors.

STI-SSWRED Red Wrap Strip 1.5" W x 0.25" Thick x 12' L 3.03 lbs 1
STI-SSWRC2 Metal Restraining Collar 25' Long 3.76 lbs 1
STI-WSC-8RED Pre-Formed Restraining Collar for 6" Plastic Pipe 6" Diameter 1.06 lbs 1
STI-SSWFT Foil Tape 2" x 30' 0.44 lb 6

  • Easy to install- takes only minutes to secure your building against a spreading fire
  • Safe for plastics tested on PVC, ccPVC, ABS, ccABS, PP, FRPP, and PVDF
  • Water-resistant will not break down or lose qualities when exposed to moisture
  • Conforms easily to the pipes to make installation a snap
  • UL classified for plastic pipe applications up to and including 3 hours
  • ASTM E814 and UL1479



Color Red
Thickness 1/4” (6 mm)
Width 1-1/2” (38 mm)
Length 12’ (3.7 m)
Weight 1.10 lbs (0.52 kg)
Expansion System Two-Stage
Expansion Begins 250° F (121° C)
Volume Expansion 16 to 24x
In Service Temp Less than 130°F(54°C)
Storage Temp Less than 120°F (49°C)
Shelf Life No Limit
Oven Aging No Change (60°C)
Humidity Exposure No Change (60° C; 98% R.H.)
UL Accelerating Aging Pass





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