Best Fire Rated Conduit Sleeve Solutions for Safe Wiring
Choosing the right fire rated conduit sleeve is essential for protecting cables and hoses through penetrations and under high-heat conditions. This guide highlights five reliable options that balance ease of installation, fire resistance, and durability. Each product offers ready-to-install kits or robust sleeves designed to maintain circuit integrity during a fire, helping to minimize damage and support safe building operations.
| Product | Brand | Type |
|---|---|---|
| 3M Fire Barrier Putty Sleeve Kit DT 200 | 3M | Round firestop sleeve kit |
| 3M Fire Barrier Putty Sleeve Kit DT 400 | 3M | Round firestop sleeve kit |
| 3M Fire Barrier Putty Sleeve Kit DT 100 | 3M | Round firestop sleeve kit |
| STEBER Fire Wrap Sleeve | STEBER | Heat shielded protection sleeve |
| YesBes Wire Loom Kit | YesBes | Split wire loom, various inner diameters |
3M Fire Barrier Putty Sleeve Kit DT 200

The DT 200 kit provides a ready-to-install option for complete cable or blank firestop installations. It is tested to withstand fire exposure up to 4 hours in accordance with ASTM E814 (UL 1479). The design emphasizes ease of installation with no gasket required, helping to speed up through-penetration work while maintaining fire resistance.
Key considerations include compatibility with round penetrations and the kit’s ability to seal both cables and blanks. For facilities prioritizing a straightforward, compliant install, this DT 200 option offers a compact round profile and dependable performance in fire-rated scenarios.
3M Fire Barrier Putty Sleeve Kit DT 400

The DT 400 kit mirrors the DT 200 in purpose but comes in a larger 4-inch round format. It enables complete firestop installation for bigger penetrations and maintains the same 4-hour fire rating under ASTM E814 (UL 1479). The plug-and-play approach reduces gasket handling, contributing to faster field deployment in demanding installations.
Consider this option when dealing with larger conduits or higher cable counts in mechanical rooms or corridors. Its performance is rooted in standardized firestop testing, offering predictable results for code compliance and safety.
3M Fire Barrier Putty Sleeve Kit DT 100

The DT 100 kit provides a compact, 1-inch round option for smaller penetrations. Like its DT siblings, it is ready to install for complete firestop protection with a tested 4-hour rating per ASTM E814 (UL 1479). The kit’s design emphasizes straightforward assembly, minimizing gasket handling and facilitating faster installation in tight spaces.
Choose DT 100 when penetrations are limited to smaller conduits or where space constraints require a compact firestop solution without sacrificing fire resistance or code compliance.
STEBER Fire Wrap 25″ Length

The 1-1/2 inch ID Fire Wrap provides heat shielded protection with a silicone-coated fiberglass sleeve. The product supports direct heat exposure up to 500 degrees Fahrenheit and features a Hook and Loop Closure for easy installation around wires, hoses, or small-diameter ducts. It withstands operating temperatures from -60 C to 260 C and carries VW-1 flammability certification. Inner sleeve is fiberglass, coated with silicone for enhanced heat resistance.
This option suits scenarios requiring flexible, high-heat protection over longer wire bundles or hoses where a wrap style delivers more adaptable coverage than rigid sleeves.
YesBes Wire Loom 30 FT Kit

The YesBes split wire loom kit provides multiple inner diameters (1/4″, 3/8″, 1/2″, 3/4″) across 30 feet, enabling flexible routing for various cables. Made of high quality polyethylene, these split looms are designed for safer handling and mounting away from heat sources, with a temperature operating range from -40°F to 200°F. The split design makes it easier to insert cables without undoing existing connections, which can speed up installations in garages, basements, or industrial settings.
Use this kit when you need affordable, reusable protection for a broad range of cables and hoses, especially where quick adjustments and reconfiguration are common during upgrades or renovations.
Kanayu Split Flame Retardant Wire Loom 1/2″ x 100 ft

These Kanayu sleeves feature high-temperature resistance and flame retardancy, suitable for automotive wiring, machine tools, and home applications. The 0.5-inch inner diameter, 0.62-inch outer diameter, and 100-foot length provide substantial coverage for diverse bundles. The polypropylene material supports a wide operating temperature and is designed for flexible bending without twisting, making it suitable for industrial and marine environments where protection against heat and flame spread is critical.
Kanayu Split Flame Retardant Wire Loom 1/2″ x 100 ft (Variant)

This Kanayu variant matches the same core features—high-temperature resistance and flame retardancy with a split design—accommodating wide temperature ranges (-22 to 230°F). The dimensions are similar, with 0.5-inch inner diameter and 0.62-inch outer diameter across approximately 100 feet of length, enabling flexible protection for wires and pipes in automotive, marine, and industrial settings.
STEBER 5/8 ID Fire Wrap 25″ Length

The 5/8″ ID version of the STEBER Fire Wrap offers another option for longer runs with higher insulation needs. It shares similar specifications with the 1-1/2″ version, including 500°F direct heat tolerance, Hook and Loop Closure, and silicone-coated fiberglass construction. The product supports an extended protection profile for thicker bundles and longer configured runs, combining flexibility with robust fire resistance.
Buying Guide: Key Purchase Considerations And Comparisons
When selecting a fire rated conduit sleeve or protective wrap, consider these factors to ensure code compliance and effective protection:
- Fire rating and standards: Look for products tested under ASTM E814 (UL 1479) with explicit hours of protection. Higher ratings are beneficial for critical penetrations.
- Size compatibility: Match the inner diameter (ID) to your conduit or cable bundle. Consider future expansion when selecting a size.
- Installation method: Ready-to-install kits simplify field work and reduce gasket handling. Some products use wrap designs for flexible coverage, while others provide rigid sleeves for through-penetration use.
- Material and heat resistance: Silicone-coated fiberglass and polypropylene sleeves offer different heat tolerances. Assess operating temps and environmental exposure (indoor, outdoor, marine, automotive).
- Flexibility vs. rigidity: Split loom and wrap designs support easier routing around existing infrastructure, whereas rigid sleeves may provide more rugged physical protection.
- Ease of access and maintenance: Consider whether future cable changes require disassembly, and choose a kit that minimizes disruption.
- Code compatibility: Ensure the product meets local building codes and fire safety standards relevant to your project.
For facilities with varying penetration sizes, combining products can provide a layered approach: smaller DT series sleeves for tight penetrations, larger wraps for bundles, and flexible looms for routing around obstacles. Always verify installation instructions and keep documentation for compliance records and inspections.