Description

SpecSeal® LCC Firestop Collars – STI Firestop

SpecSeal® LCC Firestop Collars are factory-manufactured firestop devices designed for use on combustible plastic piping up to 4 in. trade size. Each LCC Collar pairs a durable galvanized steel restraining collar with a factory-applied intumescent material, ensuring the correct amount of firestop material is used every time — eliminating the guesswork of field-applied wraps or sealants.

Why factory-sized collars matter

Field-measured firestop wrap strips depend on installer judgment to get coverage and thickness right. LCC Collars remove that variable: each collar is pre-engineered for a specific pipe trade size, so the intumescent char volume and expansion rate are consistent on every installation. This reduces inspection failures, speeds up rough-in schedules on commercial fit-outs, and simplifies documentation for fire-rated wall and floor penetrations.

Where LCC Collars are used

• Plastic pipe penetrations (PVC, CPVC, ABS) through fire-rated gypsum walls and concrete floor slabs
• Riser penetrations in high-rise residential and commercial buildings
• Retrofit fire-stopping where existing plastic pipework passes through newly rated partitions
• Mechanical rooms and service shafts with dense plastic pipe runs

How it works

At 320°F (160°C), the intumescent lining begins to expand, closing off the pipe opening as the plastic pipe softens or burns through — preventing flame and smoke spread between compartments. The collar’s steel shell restrains the expanding char, directing it inward to seal the penetration rather than allowing it to expand outward.

Specifications

For larger-diameter penetrations or field-applied flexibility, see the SpecSeal LCI Intumescent Sealant — part of Ingenious full Specified Technologies Inc. (STI) firestop range.