ADL Insulflex sleeves
Pyrojacket® Fire Sleeves
Pyrojacket is a high-bulk glass fibre sleeve with a heavy coat of iron oxide red silicone rubber. It protects hydraulic hoses, fuel lines and cables from flame, radiant heat and molten metal – and keeps hot lines safe to touch.

- 260 °Ccontinuous
- 1090 °Cfor 15–20 minutes
- 1650 °Cmolten splash, 15–30 seconds
- up to 152 mmdiameter (Aerostyle)
The range
Two Grades
Aerostyle Pyrojacket®
Thicker, denser inner braid than Industrial grade for more insulation, strength and abrasion resistance.
- UL 1441 and VW-1
- Up to 152 mm (6")
Industrial Grade Pyrojacket®
Knitted high-bulk E-glass sleeve – the original Pyrojacket for industrial hoses and cables.
- DMT-certified temperature ratings
Need to fit it without disconnecting the hose? See Pyrojacket VCO with hook-and-loop closure.
How it works
How Silicone-Coated Glass Fibre Protects
Why it sheds molten metal and survives fire.
Sheds Splash
A thick coat of iron oxide red silicone rubber over a high-bulk glass fibre sleeve or cloth sheds molten steel, aluminium and glass splash almost instantly – before much heat can pass through.
Turns to a Crust in Fire
Exposed to flame for longer, the silicone turns into a hard silica (SiO₂) crust that keeps protecting the hose or cable underneath.
Insulates
The bulky glass fibre traps air, so it keeps heat in hot lines (protecting people from burns and saving energy) and keeps outside heat away from hoses and cables.
Why Pyrojacket
Extends Hose and Cable Life
Certified
Aerostyle is the only fire sleeve with UL 1441 certification and VW-1 flame rating; also SAE AS1072, MSHA and DNV-GL.
Tough
Resists abrasion, vibration, hydraulic fluid, diesel, firefighting foam, road salt and washdowns.
Bundles Neatly
Good elasticity for bundling hoses, tubes and cables.
Saves Downtime
Fewer heat-related hose and cable failures.
How to choose
Choosing a Sleeve
Size
Measure the outside diameter of the hose, fitting or bundle it must pass over.
Ends
Seal the cut ends with Odourless End Dip or Pyrosil tape so oil can’t wick into the braid.
Retrofit?
Use the VCO version if the line can’t be disconnected.
Literature & related
More Information
- Pyrojacket pages
Industrial and Aerostyle grades · PDF, 3.8 MB - Pyrojacket certifications
Aerostyle Pyrojacket test and approval list · PDF, 1.4 MB - ADL Insulflex catalogue
Sleeves, blankets, tapes and sealants (Vol. 7) · PDF, 3.8 MB
Not Sure Which One You Need?
Tell us about the job – the machine, the conditions and what it has to do – and we’ll help you choose the right ADL Insulflex product.