Firestop steel collar ELKO-BIS INTU COLLAR L expandable 2.5 m with 60 mm intumescent strip, 10 m roll

Steel firestop collar ELKO-BIS INTU COLLAR L is a passive fire protection sleeve supplied as a 10 m roll of linked 2.5 m sections with a 60 mm intumescent strip. The product is intended to be wrapped around plastic pipe penetrations through walls and floors. In the event of fire, the intumescent material swells to close the pipe opening and restrict the passage of flame and hot gases, helping to maintain the integrity of fire-resisting partitions and reduce smoke spread.

Advantages

The collar combines a robust steel band with a 60 mm intumescent strip that activates at elevated temperatures. Supplied in a continuous 10 m roll of 2.5 m expandable sections, it enables flexible cutting and on-site adjustment to match penetration sizes. Its construction supports installation in both wall and floor assemblies and is suitable for use around a variety of plastic pipes commonly found in HVAC, plumbing and electrical services. The product facilitates conformity with firestopping requirements without introducing combustible materials into the sealing detail.

Suitable for

• Sealing single plastic pipe penetrations through fire-rated walls
• Sealing plastic pipe penetrations through concrete or screed floors
• Retrofitting firestopping around existing plastic service runs
• Applications in HVAC, sanitary plumbing and concealed electrical conduit systems

Key specifications

• Material: steel band with intumescent (swelling) strip
• Intumescent strip width: 60 mm
• Form: roll containing continuous linked sections, individual section length 2.5 m
• Total roll length: 10 m
• Expandable/adjustable to fit a range of plastic pipe diameters (verify with applicable approvals)
• Designed for installation in wall and floor fire-resisting constructions

How to use

Cut the roll into the required number of 2.5 m sections or to the necessary length for the penetration. Wrap the steel collar around the plastic pipe so that the intumescent strip faces the annular gap between the pipe and the surrounding structure. Secure the collar according to the manufacturer’s fixing method and ensure the collar is tightly fitted and in full contact with the pipe and substrate. Installation should follow project firestopping specifications and any applicable test reports or certifications for the given wall or floor assembly.

Usage recommendations

Confirm pipe material and diameter and consult relevant firestop system approvals to verify compatibility and allowed annular gap sizes. Use corrosion-resistant fasteners where required and avoid painting or coating the intumescent strip. For penetrations with multiple pipes or complex services, use combined firestopping solutions verified for the specific configuration.