Design Engineering Aluminized Heat Sheath Sleeving — 1-1/2" x 36" Reflective, Fire-Retardant Protection

Design Engineering Heat Sheath™ Aluminized Sleeving is a slip-on, heavy-duty protective cover that reflects radiant heat and shields hoses, wires, and fluid lines from heat, abrasion, oil, and road debris.

Built for automotive and industrial environments where temperatures and mechanical wear threaten components, this 1-1/2" x 36" sleeving combines a 19 oz high-temperature fiberglass core with a bonded aluminized outer layer and aramid-reinforced stitching. The result is a flexible, fire-retardant barrier that reflects radiant heat up to 2000°F and endures direct heat exposure up to 500°F, while resisting chemicals, oil, and grime. It’s designed for easy slip-on installation and made in the USA.

How does Heat Sheath™ reduce heat exposure to lines and cables?

The aluminized outer face reflects radiant heat away from covered components, lowering the heat load they experience. The thick fiberglass insulation then buffers remaining heat, slowing thermal transfer and preserving hose and wire integrity under high-temperature conditions.

• Aluminized surface reflects radiant heat up to 2000°F
• 19 oz fiberglass insulation provides thermal buffering
• Withstands direct heat contact up to 500°F
• Aramid thread maintains seam strength under heat stress

What kinds of damage does this sleeving prevent?

Heat Sheath™ addresses multiple failure modes at once — it resists abrasion from vibration and contact, repels oil and fuel that accelerate degradation, and provides flame-retardant coverage to reduce fire risk around hot components. This multi-threat protection helps extend service life and reduce unscheduled repairs.

• Protects hoses, fuel lines, wiring, and cable jacketing from wear
• Shields against oil, fuel, chemicals, dirt, and road grime
• Flame-resistant construction reduces ignition potential
• Aramid-reinforced stitching resists mechanical abrasion

How easy is it to install and size for my application?

Installation is simple: disconnect the line if needed, cut the sleeving to the desired length, slide it over the component, and reconnect. The 1-1/2" inside diameter fits many hoses and cable bundles; for awkward layouts the sleeving can be cut and rejoined or used with clamps and high-temp tape for secured positioning.

• Slip-on design—no special tools required
• Cut to length with standard snips or knives
• Works with clamps, ties, or high-temperature tape for retention
• Available in common sizes to match hose and bundle diameters

Are there any installation or safety cautions?

Heat Sheath™ is engineered to resist high temperatures and abrasion but should not be pressed directly against exhaust ports or applied to surfaces hotter than specified limits. Maintain clearance from extreme heat sources and inspect periodically for wear or damage, replacing sleeving if compromised.

• Do not apply directly to exhaust manifolds or headers
• Keep within rated direct heat limit of 500°F
• Inspect regularly and replace if frayed or damaged
• Use appropriate fasteners and maintain clearance from extreme heat

Who is this for? Heat Sheath™ is intended for mechanics, fabricators, racers, fleet managers, and industrial maintenance teams who need dependable thermal and abrasion protection for hoses, fuel lines, wiring, and cable bundles. It’s a practical choice when you require a rugged, easy-to-install protective sleeve that resists oil and chemicals, reflects intense radiant heat, and is built for long-term performance in demanding automotive and industrial environments.