DEI Fire Sleeve 5/8 Inch Inside Diameter X 100 Foot Spool

DEI Fire Sleeve 5/8-inch inside diameter protects fuel, transmission and brake lines from heat and abrasion, extending component life and improving system reliability in high-heat environments.

This DEI fire sleeve is a fireproof thermal insulation solution constructed from a high-temperature resistant braided glass material, woven into a sleeve and heavily coated with 100% iron oxide silicone rubber. It is designed to prevent heat soak and physical wear on fluid lines where durability and safety are critical.

• High-temperature braided glass construction — provides a heat-resistant barrier that reduces radiant and convective heat transfer to protected lines.
• Woven sleeve form — flexible, conformable coverage that fits around fuel, transmission and brake lines for continuous protection without compromising routing or bend radius.
• 100% iron oxide silicone rubber coating — creates an outer surface that resists abrasion and maintains integrity under thermal cycling, helping prevent chafing and exposure of underlying lines.
• Fireproof thermal insulation — designed to mitigate ignition risk and slow heat propagation along protected lines in the event of nearby elevated temperatures.
• 5/8-inch inside diameter on a 100-foot spool — long continuous length for multiple runs or custom-length installations, suitable for workshop and production use.

Why this matters: protecting fluid and brake lines from excessive heat and physical damage preserves system performance, reduces the likelihood of leaks or failures, and supports safer operation in motorsports or high-performance applications. DEI's materials and coating approach focus on long-term thermal stability and mechanical durability rather than decorative finishes.

Brand note: DEI (Design Engineering, Inc.) supplies engineered thermal protection products used in demanding automotive and motorsports environments.