Braided Fiberglass Sleeve is a high-temperature insulation solution designed for **continuous heat protection**. Unlike silicone firesleeve, which is designed to shed molten splash, this (white or tan) sleeve is made from 100% E-Glass fiberglass, providing an excellent thermal barrier for components.
Its primary functions are **personnel safety** (protecting workers from burns on hot pipes) and **energy savings** (trapping heat inside steam or exhaust lines). This guide from Glory Engineering Supplies covers the technical details and available sizes **up to 100mm (4 inches)**.
Our sleeve is rated for **540°C (1000°F)** continuous operating temperature, making it ideal for exhaust and steam line insulation.
We stock all sizes, from 1/4" (6mm) for small wires up to **4" (100mm)** for large industrial pipes and exhaust systems.
Constructed from a dense, braided E-Glass fiberglass. It is non-flammable, non-toxic, and has extremely low thermal conductivity.
Insulating your steam or exhaust lines with our sleeve traps heat, improving system efficiency and protecting workers from accidental contact burns.
This product is a single-layer, high-density insulating sleeve.
| Component | Material | Function |
|---|---|---|
| Single-Wall Braid | Braided E-Glass Fiberglass |
|
This product is a non-pressure-rated sleeve. Its key metrics are temperature rating, size, and wall thickness (which determines its insulating value).
| Inner Diameter (ID) | Continuous Temp | Nominal Wall Thickness |
|---|---|---|
| 1/4"(~6mm) | 540°C / 1000°F | 1/16" (1.6mm) |
| 3/8"(~10mm) | 540°C / 1000°F | 1/16" (1.6mm) |
| 1/2"(~13mm) | 540°C / 1000°F | 1/16" (1.6mm) |
| 5/8"(~16mm) | 540°C / 1000°F | 1/16" (1.6mm) |
| 3/4"(~19mm) | 540°C / 1000°F | 1/8" (3.2mm) |
| 1"(~25mm) | 540°C / 1000°F | 1/8" (3.2mm) |
| 1-1/4"(~32mm) | 540°C / 1000°F | 1/8" (3.2mm) |
| 1-1/2"(~38mm) | 540°C / 1000°F | 1/8" (3.2mm) |
| 2"(~51mm) | 540°C / 1000°F | 1/8" (3.2mm) |
| 2-1/2"(~64mm) | 540°C / 1000°F | 1/8" (3.2mm) |
| 3"(~76mm) | 540°C / 1000°F | 1/8" (3.2mm) |
| 3-1/2"(~89mm) | 540°C / 1000°F | 1/8" (3.2mm) |
| 4"(~102mm) | 540°C / 1000°F | 1/8" (3.2mm) |
Fiberglass sleeving must be secured at the ends to prevent fraying and to hold it in place.
The most common and secure method. Use a Stainless Steel T-Bolt or Band Clamp at both ends to firmly secure the sleeve to the pipe or hose.
For a clean, low-profile finish, the ends can be tightly wrapped with high-temperature fiberglass tape or tied with lacing cord.
The same material is also available as a high-temperature tape, perfect for wrapping exhaust headers and downpipes tightly.
The material is also available in large sheets and blankets, which can be cut and sewn to create custom, removable insulation jackets for valves and turbines.
Proper installation maximizes insulation value and sleeve life.
Solution: The sleeve ID must be **larger** than the hose/pipe OD. A snug fit is good for insulation, but it must be large enough to slide on without excessive force.
Problem: This sleeve is **absorbent**. If it soaks up oil or hydraulic fluid, it loses its insulation value and can become a fire hazard.
Use Silicone Firesleeve for oily environments.
Problem: You cannot get a safe hydraulic crimp *over* this sleeve. The fitting will not grip the hose reinforcement and will blow off.
Correctly: Crimp the hose assembly *first*, then slide the sleeve over it.
Solution: The braided fiberglass will fray when cut. You **must** secure the ends with a clamp or high-temperature tape to prevent the braid from unraveling.
This is the most important question. They are for different jobs:
No. This sleeve is a **thermal insulator**, not a hose. It has no pressure rating on its own. It is designed to slide *over* an existing hose, pipe, or cable to insulate it.
This sleeve is rated for **540°C (1000°F)** continuous heat. It can handle higher intermittent temperatures, but 540°C is its maximum stable operating limit.
The best method is to wrap the area to be cut tightly with electrical tape. Make your cut directly through the center of the tape. The tape will hold the braid together. You must then secure the ends permanently with clamps or high-temp tape.
From insulating a hot exhaust to protecting your team from burns, our fiberglass sleeve is the solution. Contact the Glory team today to get the right size for your application.
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