Design Engineering Heat Sheath™ Aluminized Sleeving 3/4" x 36" — Reflective 2000°F Thermal Barrier, Abrasion-Resistant

Design Engineering Heat Sheath™ Aluminized Sleeving is a slip-on, heavy-duty thermal barrier that reflects radiant heat up to 2000°F and protects hoses, lines, and wiring from heat, abrasion, oil, and debris.

Built for demanding automotive and industrial situations, this 3/4" x 36" sleeving pairs 19 oz high-temperature fiberglass insulation with an aluminized outer surface and aramid-reinforced stitching. The combination reduces heat transfer, shields vulnerable components from contaminants, and resists wear from chafing and road debris. It's engineered for straightforward installation and long service life while being manufactured in the USA.

How does this sleeving reduce heat exposure to hoses and wires?

The aluminized outer layer reflects intense radiant heat away from protected components, while the thick fiberglass core provides thermal resistance to conduction. Together they lower the amount of heat that reaches hoses and wiring without adding rigid bulk, helping parts run cooler in high-heat zones.

• Reflects radiant heat up to 2000°F to deflect intense sources.
• Withstands direct contact heat up to 500°F for short durations.
• 19 oz fiberglass core slows conductive heat transfer.

Will it resist abrasion, chemicals, and oil in automotive use?

Yes—Heat Sheath is designed to withstand mechanical wear and common automotive contaminants. The aramid-reinforced stitching and durable aluminum facing reduce abrasion and puncture risk, while the outer finish repels oil, fuel, and grime that would otherwise degrade exposed lines.

• Aramid fiber thread increases seam strength and abrasion resistance.
• Aluminized surface resists oil, fuel, dirt, and road debris.
• Durable construction reduces chafe and wear on hoses and cables.

How easy is it to install on existing hoses and lines?

Installation is straightforward: disconnect the component, cut the sleeving to the required length, slip it over the hose or wire, then reconnect. No specialized tools or adhesives are needed, making it suitable for field service or shop work.

• Slip-on design fits over most hoses, lines, and wiring harnesses.
• Cut-to-length flexibility for custom applications and routing.
• Reinstall components immediately after sleeving—minimal downtime.

Are there any application limits or safety notes?

Heat Sheath performs well in proximity to high temperatures but is not intended for direct contact with exhaust manifolds or catalytic surfaces. It provides long-term protection in many high-heat locations but should be routed with clearance from constant direct flame or metal surfaces above its 500°F direct-heat rating.

• Not for direct contact with exhaust components or open flames.
• Designed for hoses, fuel lines, cables, and fluid lines near heat sources.
• Proudly manufactured in the USA for consistent quality control.

Who is this for? Mechanics, custom builders, motorsport teams, fleet maintenance professionals, and industrial technicians who need a durable thermal and abrasion barrier for hoses, fuel and brake lines, wiring harnesses, and fluid conduits will benefit from Design Engineering Heat Sheath™. If you need a slip-on, cut-to-fit solution that reduces heat exposure, resists oil and road contaminants, and installs quickly without special tools, this sleeving is built for those real-world demands.