BSTFLEX fire sleeve close-up shows silicone-coated fiberglass for high-heat protection
BSTFLEX sleeve wrapped around hoses and wires in a vehicle engine bay
Close view shows 1/4 inch ID and 5 ft length for easy fit
BSTFLEX sleeve withstands 260 C, protecting circuits in extreme heat
BSTFLEX fire sleeve easy to install around automotive hoses and wiring
BSTFLEX fire sleeve used on automotive hoses in engine bay
BSTFLEX sleeve with MSHA UL 1441 and rail certifications

BSTFLEX

BSTFLEX 1/4 Inch ID Heat Shielded Fire Sleeve – Silicone-Coated Fiberglass, 5 ft for Automotive Hoses & Wiring

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$18.06

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Free tracked shipping on every order. Most orders arrive within 3–8 business days.

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Return eligible items within 30 days of delivery for a full refund. We email you a prepaid return label.

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During high demand, deliveries may experience short carrier delays. Tracking updates remain active for every order.

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Questions about fit or an order? Email nexoltic@gmail.com. We reply on business days (Mon–Fri).

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Product details

BSTFLEX introduces the 1/4 inch ID heat shielded fire sleeve, a silicone coated fiberglass wrap designed to guard automotive hoses and electrical wiring from high heat. With a 5 foot length, it provides flexible coverage for engine bays, frame areas, and longer runs, while staying easy to handle during installation. The black exterior minimizes glare and blends with surrounding components, and the inner fiberglass core adds rigidity where coverage matters most.

Key specifications at a glance

  • Inner diameter 1/4 inch (6 mm); length 5 feet (1.5 m). Manual measurements may vary slightly.
  • Material is standard silicone rubber coated fiberglass, featuring an inner fiberglass sleeve and a silicone outer coating for protection.
  • Operating temperature range from minus 60 C to 260 C; flammability VW-1; note that silicone may emit a mild odor under high heat, which is normal.

What it protects and where it shines

  • Hose and wiring protection: designed to wrap around fuel lines, hydraulic lines, and electrical wiring to shield heat and extend life.
  • Vapor lock prevention and melting protection: helps keep lines cooler in operation, reducing heat transfer to critical connections.
  • Versatile applications: suitable for automotive, industrial, boat, and machinery settings where high heat is a concern.

Easy to use and built to last

The sleeve is designed for straightforward use. Slip it over the target bundle and position it to maximize coverage. It is intended to maintain performance across typical vehicle and equipment temperatures and environments, delivering reliable protection.

Quality, safety and assurance

  • Certifications and tests: MSHA, UL 1441, ROHS, REACH, and a suite of rail and combustion related tests; aligns with DIN EN45545 2 2020 standards.
  • Durability: designed to withstand repeated high temperature exposure while protecting both hoses and wiring.

Odor note

Silicone coatings may produce a mild odor when heated; this is a normal phenomenon and typically fades with use.

Warranty

BSTFLEX stands behind this product with a lifetime warranty, reflecting confidence in its long term performance.

FAQ

Q: What is the BSTFLEX 1/4 Inch ID Fire Sleeve used for?

A: Used to shield hoses and wiring from high heat, helping reduce heat transfer and prolong line life in engines and machines.

Q: What certifications and temperature range does this sleeve offer?

A: Rated for -60 C to 260 C and tested with MSHA, UL 1441, ROHS, REACH, and rail certifications.

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