SpecSeal Intumescent Sleeve

SpecSeal Intumescent Sleeve
SpecSeal Intumescent Sleeve
SpecSeal Intumescent Sleeve
SpecSeal Intumescent Sleeve

SpecSeal Intumescent Sleeve

The SpecSeal Intumescent Sleeve is a factory manufactured device designed to protect metallic and plastic pipes penetrating through fire rated floors. Utilizing a flexible steel sleeve body and molded intumescent lining, the SpecSeal Intumescent Sleeve wraps around pipes ranging from 2 in. to 4 in. Trade size. Once installed around the penetrating pipe, the SpecSeal Intumescent sleeve slides along the pipe into the floor opening allowing for single side installation without the use of steel screws or hose clamps.

Test Standards ASTM E814 (UL1479)
Third Party Approvals


  • Rapid expansion - closes off burning penetrants faster
  • High volume char - significant expansion seals off opening
  • Water-resistant - no soluble or hygroscopic ingredients
  • Thin profile - use it in all the tight spots
  • Flexible & durable - no loose flakes (eye hazards)
Metallic Pipe
Plastic Pipe
Finished Product
No Expiration
Smoke Barrier


Property Value
Shell Construction Galvanized Steel
Expansion Begins 320°F (160°C)
Volume Expansion 30x to 60x
In Service Temperature Less Than 120°F (49°C)
Shelf Life No Limit

Ordering Information

Catalog Number UPC Number Description (UOM) Qty. Case Qty. Weight (Each) Image
SIS240 730573039526 SpecSeal Intumescent Sleeve for 2" - 4" (51mm-102mm) Trade Size pipe penetrations 1 6 14.5 SpecSeal Intumescent Sleeve for 2
SpecSeal Intumescent Sleeve
STI leads the industry in developing innovative fire protection systems that help stop the spread of fire, smoke and hot gases. For over 25 years, our team has worked hand in hand with the construction industry to create simple solutions to complex firestopping problems. Our SpecSeal® and EZ Path® product lines are engineered to deliver powerful performance. Because our system designs are user-driven, they are easier to apply. The result is simply designed, outstanding fire protection systems which often result in lower installed costs. STI products and systems offer innovative firestop solutions for all types of new construction and retrofit applications. Since firestopping is our only business, we concentrate all our resources on providing the highest quality, fully tested, innovative firestopping solutions.