Which item is the fireproof sealing sleeve for cable trays

Fireproof sleeve sealing of cable trays is achieved using modular firestop systems, intumescent pillows, and protective coatings that prevent fire and smoke propagation through wall and floor penetrations.

Modular Firestop Systems

FIRSTO firestops are designed for multi-cable and cable tray penetrations in fire-rated walls and floors. They are modular, easy to assemble around cable runs, and allow for later addition or removal of cables. These systems prevent the spread of smoke and fire while withstanding mechanical loads, making them suitable for fire-resistant ducting of cables and cable trays through structural penetrations . RISE® systems use expanding rubber insert sleeves combined with sealants to provide fire, water, and gas protection for multiple cables in a single penetration .

Intumescent Fireproof Pillows

AF BAGS are intumescent and ablative fireproof pillows certified under EN 1366-3 for up to EI 240 fire resistance. They consist of a non-combustible fiberglass casing filled with intumescent compounds, thermal insulators, and water-releasing products. These pillows can be inserted into cable tray penetrations without additional framing and are easily repositioned for maintenance or modifications. They are suitable for cables up to 21 mm in diameter and can be used in walls, floors, and sandwich or self-supporting structures .

Fire-Resistant Coatings and Tapes

FLAMMOTECT-A coatings and DG-CR 0.7 fire protection tapes provide a protective shield around cables and trays, preventing flame propagation and maintaining cable functionality during a fire. These solutions are resistant to environmental factors such as UV, moisture, and chemicals, making them suitable for indoor and outdoor applications, including industrial plants, hospitals, and nuclear facilities .

Firestop Putty and Caulks

Products like 3M Fire Barrier Moldable Putty+ and IC 15WB Caulk are used to seal cable penetrations in fire-rated constructions. They are intumescent, halogen-free, and can be applied with standard caulking tools. These materials expand under heat to block fire and smoke, and can be reused for additional cables if needed .

Key Considerations

• Fire Resistance Rating: Choose products certified for the required EI rating (e.g., EI 120, EI 240).
• Cable Diameter and Tray Size: Ensure the sealing solution accommodates the cable sizes and tray dimensions.
• Maintenance and Modifications: Modular systems and intumescent pillows allow easy access for adding or removing cables.
• Environmental Resistance: For outdoor or harsh environments, select coatings or tapes resistant to UV, moisture, and chemicals. By combining these solutions, cable tray penetrations can be effectively sealed to maintain fire safety, structural integrity, and operational continuity in critical installations.