6mm - 1/4" Self Adhesive Aluminum Heat Reflective

BSTFLEX 6mm (1/4") self-adhesive aluminum-reflective fiberglass sleeve is a side-entry, high-temperature wrap designed to shield hoses, wire harnesses and exhaust lines from heat up to +150°C.

This 2-meter (78 inch) length of heat-reflective sleeving combines aluminum foil, woven fiberglass and a polyester backing to deliver thermal insulation, oil resistance and flexible protection in automotive and industrial environments. The side-entry, self-wrap design with a 25% overlap makes installation quick without disassembling connections, and the 0.5mm thickness balances durability with pliability for routing in tight spaces.

How does this sleeve protect cables and hoses from engine heat?

The aluminum surface reflects radiant heat while the fiberglass core slows conductive heat transfer, lowering the thermal load on wiring and rubber hoses. It’s engineered for sustained exposure between -40°C and +150°C and provides measurable insulation performance.

• Reflective aluminum layer reduces radiant heat exposure.
• Fiberglass body resists heat conduction and maintains shape.
• Rated working temperature -40°C to +150°C for engine bay use.
• Measured heat insulation performance of ≥100°C in demanding settings.

Is the sleeve easy to install around existing harnesses or tubing?

Yes — the side-entry self-wrap design allows you to wrap around mounted hoses, bundles or exhaust components without disconnecting them. A 25% overlap helps maintain coverage and the flexible 0.5mm construction conforms to bends and tight routing.

• Side-entry slit for wrapping without disassembly.
• 25% overlap secures coverage along the length.
• Flexible fiberglass and aluminum composite shapes around contours.
• 78" (2 m) length fits multiple runs or larger harnesses.

Will this sleeve withstand oil, abrasion and outdoor conditions?

The polyester-backed fiberglass and aluminum foil construction offers good oil resistance and abrasion protection for automotive environments. While robust for routed lines, keep it away from open flames and direct cutting edges to maintain performance.

• Oil-resistant materials suitable for engine compartments.
• Durable composite layers reduce wear from vibration and contact.
• Avoid direct flame exposure; not a fireproof barrier.
• Recommended inspection after prolonged exposure to harsh conditions.

What size and quantity are included, and how do I choose the right fit?

This listing supplies one 78" (2 meter) length of 6mm (approx. 1/4") internal diameter self-wrap sleeve with 0.5mm thickness. Choose this size for small harnesses, sensor wires, vacuum lines or thin hoses; measure bundle diameter and allow overlap when planning coverage.

• Includes: 1x 78" (2 m) self-wrap sleeve, 6mm ID, 0.5mm thickness.
• Best for thin wire bundles, small hoses and sensor lines.
• Measure bundle plus 25% overlap to determine required length.
• Multiple sleeves can be combined for longer runs or larger bundles.

Who this is for: mechanics, DIY car enthusiasts, fleet technicians and industrial maintenance crews who need a flexible, quick-to-install thermal barrier for wiring, tubing and exhaust-adjacent components. If you need a lightweight, reflective heat shield that installs without disconnecting assemblies, this BSTFLEX sleeve offers a balance of temperature resistance, oil tolerance and practical convenience for routine automotive and equipment protection. For safety, avoid exposing the sleeve directly to open flames and inspect periodically in high-abrasion locations; contact BSTFLEX support if you need help selecting the right diameter or length.