Sewn Sleeves
Thermal protection of hoses, tubes, cables and other critical components
Clevaflex Sewn Sleeves are flexible thermal sleeves with a highly reflective surface providing excellent component protection from radiant heat. They are manufactured from a woven fiberglass laminated to an aluminum foil and then folded flat and sewn along the open edge.
Clevaflex Sewn Sleeves provide thermal protection from radiant heat up to 1,000 degrees Fahrenheit and are available in sizes from 3/8-inch to 2-1/2-inch diameters. They are available in spools or cut-to-length finished parts.
Typical Applications
- Power steering hoses
- Air conditioning hoses
- Heater hoses
- Wire harnesses
- Brake tubes and hoses
- Engine compartment components
- Spark plug wires
Features:
- Excellent protection from radiated heat
- Significantly reduces component temperatures
- Easy to install and route
- High strength-to-weight ratio
- Fluid resistant
- Fray resistant
- Abrasion protection
| Property | Test Method | Test Value |
|---|---|---|
| Description | Woven fiberglass laminated to an aluminum foil | |
| Thermal Endurance | Sleeve is held 25.4 mm above a 536°C radiant heat source for 6 hours | No delamination of the foil from the fabric |
| Thermal Endurance | Oven soak, 10 hours at 175°C | No cracking or delamination |
| Flammability | ASTM D 4723 / Fed. Std. 191-5903.1 | |
| Char length | Less than 19 mm | |
| Afterglow | Less than 3 sec. | |
| Flameout | Less than 3 sec. |
All Clevaflex Sewn Sleeves meet the above specifications.
| Nominal I.D. | Part Number |
|---|---|
| 3/8" | SS-18-FG-0375 |
| 1/2" | SS-18-FG-0500 |
| 5/8" | SS-18-FG-0625 |
| 3/4" | SS-18-FG-0750 |
| 7/8" | SS-18-FG-0875 |
| 1" | SS-18-FG-1000 |
| 1-1/4" | SS-18-FG-1250 |
| 1-1/2" | SS-18-FG-1500 |
| 1-3/4" | SS-18-FG-1750 |
| 2" | SS-18-FG-2000 |
| 2-1/2" | SS-18-FG-2500 |
Clevaflex Sewn Sleeves come in 18.5 oz. fiberglass.

SAE J2303 Thermal Effectiveness for Sleeve Insulation: 18.5 oz. Sewn Sleeve
The foregoing specifications and illustrations are for informational purposes only. Nothing contained therein is intended to, nor shall it be construed as, a representation, warranty or guaranty of any type, including the fitness of the product for any purpose. Users are encouraged to make their own evaluations and to conduct their own testing to determine the suitability of any of our products for a specific application.
