Industrial-grade fireproof putty, such as 3M™ Fire Barrier Moldable Putty Pads MPP+, provides UL-tested firestop protection for electrical distribution boxes, preventing the spread of fire, smoke, and gases.

Key Features

Fire Resistance: Fireproof putty pads are designed to maintain the integrity of fire-rated walls and enclosures. Products like 3M™ MPP+ are tested for up to 2–4 hours in accordance with ASTM E814 (UL 1479), ensuring protection against flames, smoke, and noxious gases in industrial settings . Moldability and Adhesion: These putty pads are pliable and moldable by hand, allowing them to conform to irregular box shapes, cable bundles, and wall penetrations without the need for tools or mixing . They adhere well to metal, plastic, concrete, and brick surfaces, making them suitable for both metal and non-metal electrical distribution boxes . Sound and Smoke Sealing: In addition to fire protection, many putty pads provide draft and cold smoke sealing, which can help reduce air movement and noise transfer in factory environments . Ease of Installation: Industrial fireproof putty pads are typically ready-to-use, with no curing required. Technicians can apply them directly to the substrate, and multiple pads can be combined for larger openings . Some kits include disposable gloves for safe handling and quick placement . Durability and Re-entry: High-quality fireproof putty maintains its integrity over time, does not crumble or dry out, and can be re-entered for maintenance or modifications without compromising firestop performance .

Recommended Options

• 3M™ Fire Barrier Moldable Putty Pads MPP+: Industrial-grade, UL-tested, suitable for electrical boxes, cable bundles, and wall penetrations. Provides up to 2 hours of firestop protection and excellent adhesion to metal and plastic boxes .
• ABOAT T Fire Putty Pads: Moldable, heat-resistant pads with strong adhesion to concrete, metal, and brick. Includes gloves for easy installation and suitable for sockets, wall openings, and electrical boxes .
• Trademark Soundproofing Acoustical Putty Pads: Moldable pads that maintain fire-rated wall integrity while also providing sound dampening. High UL and STC ratings make them suitable for industrial or commercial applications .

Installation Tips

1. Clean the surface of the electrical box or wall penetration to ensure proper adhesion.
2. Mold the putty to fit snugly around cables, conduits, or irregular box shapes.
3. Apply in layers if needed for larger openings, ensuring full coverage.
4. Check fire ratings to ensure the selected pad meets the required UL or ASTM standards for your factory environment.
5. Use gloves provided in kits to avoid skin contact and maintain hygiene during installation. Using fireproof putty pads in factory electrical distribution boxes not only enhances fire safety but also helps maintain compliance with industrial fire codes, reduces smoke and gas spread, and can improve noise control in operational areas.