Design Engineering Heat Sheath Aluminized Sleeving 1-1/4" x 36" — reflective heat barrier, abrasion- and oil-resistant

Design Engineering Heat Sheath™ Aluminized Sleeving is a slip-on protective cover that reflects intense radiant heat and guards hoses, cables, and lines from abrasion, oil, and contaminants in high-temperature environments.

When components run close to exhaust, manifolds, or other hot surfaces, heat and mechanical wear shorten service life. Heat Sheath blends a dense fiberglass insulation core with a tough aluminized outer layer and aramid-reinforced stitching to provide thermal reflection, surface resistance to sparks and rubs, and chemical repellency. It installs without adhesives or special tools: cut to length, slide over the line, and reassemble—an uncomplicated retrofit for engines, equipment, and industrial assemblies.

How much heat can this sleeving actually block?

Heat Sheath’s aluminized exterior is designed to reflect radiant energy up to 2000°F while the composite construction tolerates direct contact temperatures up to 500°F. That combination reduces heat transfer to the underlying hose or wire and helps preserve functional temperature margins in tight engine bays or confined machinery spaces.

• Reflective outer layer repels high radiant heat (rated to 2000°F).
• Withstands direct surface exposure to roughly 500°F continuous heat.
• 19 oz high-temp fiberglass core limits conductive heat flow to protected lines.
• Aluminized finish lowers surface temperatures by reflecting infrared energy.

Will it resist abrasion, fluids, and road grime?

Yes. The sleeving’s heavy-duty fiberglass core and aramid-stitched seams give it strong resistance to chafing and mechanical wear, while the aluminized outer face sheds oil, fuel, dirt, and chemicals commonly encountered in automotive and industrial environments. That helps lines remain intact and free of surface damage that can lead to leaks or electrical faults.

• Aramid fiber reinforcement at seams for improved tear and puncture resistance.
• Aluminized surface repels oil, fuel, and many chemicals for cleaner protection.
• Durable outer finish resists road debris, grit, and abrasion from vibration.
• Fire-retardant materials reduce risk of ignition from stray sparks.

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

Installation is straightforward: disconnect the affected line where possible, trim the sleeving to the required length, slide it into place, and reconnect. Because it’s a slip-on design, no adhesives, welding, or specialized tools are required—making it practical for field repairs, maintenance bays, or DIY projects.

• Slip-on design — cut to fit and slide over hoses, lines, or cable bundles.
• No special tools or adhesives needed; simple reassembly after installation.
• Available in multiple diameters and lengths for common automotive and industrial runs.
• Best used with clamps or ties at terminations to secure placement.

Are there any installation cautions or limitations?

Heat Sheath protects against radiant and moderate direct heat but should not be secured directly to exhaust pipes or used as the sole barrier on components designed to exceed the material’s direct-temperature rating. Maintain clearance where possible and avoid wrapping around parts with sustained temperatures above the stated limits.

• Not intended for direct application on exhaust pipes or turbo housings.
• Keep a nominal clearance from continuous high-temperature sources when feasible.
• Use mechanical fasteners at ends to prevent migration under vibration.
• Inspect periodically for wear, burns, or contamination in harsh service conditions.

Who is this for? Designers, technicians, and vehicle owners who need a durable, easy-to-fit thermal and abrasion barrier will find Heat Sheath useful—especially in automotive performance builds, race environments, commercial fleet maintenance, off-road rigs, and industrial equipment where heat, fluids, and abrasion threaten hoses, cable looms, and fluid lines. Made in the USA and sized at 1-1/4" x 36", this sleeving is geared toward modest-diameter runs needing robust protection without complex installation.