SpecSeal Range-Taking Firestop Collar

SpecSeal Range-Taking Firestop Collar
SpecSeal Range-Taking Firestop Collar
SpecSeal Range-Taking Firestop Collar
SpecSeal Range-Taking Firestop Collar

SpecSeal Range-Taking Firestop Collar

SpecSeal RTC Firestop Collars adapt to the size combustible pipe that you are working with. One collar is designed to address standard 3 in. & 4 in. plastic pipes as well as their associated couplings. RTC Firestop Collars adaptable nature make them an excellent tool to have at hand when bringing combustible penetrations up to code.

Test Standards ASTM E814 (UL1479)
Third Party Approvals


  • Adjustable - one collar fits 3” (89 mm) pipe, 3” (102 mm) coupling, 4” (114 mm) pipe, and 4” (127 mm) coupling
  • Rapid expansion - closes off burning pipes quickly
  • Small profile - use it in all the tight spots
  • Flexible & durable - no loose flakes (eye hazards)
  • Water resistant - no water soluble or hygroscopic ingredients
  • High volume char - expands up to 60 times
Plastic Pipe
Finished Product
No Expiration


Property Value
Shell Construction Nom 22 GA galvanized steel (0.03" (0.76 mm) thick)
Intumescent Insert Molded one piece
Sizes accommodated 3" trade size pipe (89 mm), 3" trade size pipe fitting (102 mm), 4" trade size pipe (114 mm), 4" trade size pipe fitting (127 mm)
Expansion Begins 320°F (160°C)
Volume Expansion 32x to 64x (free expansion)
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
RTC350 730573038352 Firestop Collar For 3" and 4" Trade Size Pipe and Corresponding Fittings 1 6 8 Firestop Collar For 3
SpecSeal Range-Taking Firestop Collar
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.