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
PropertyTest MethodTest Value
DescriptionWoven fiberglass laminated to an aluminum foil
Thermal EnduranceSleeve is held 25.4 mm above a 536°C radiant heat source for 6 hoursNo delamination of the foil from the fabric
Thermal EnduranceOven soak, 10 hours at 175°CNo cracking or delamination
FlammabilityASTM D 4723 / Fed. Std. 191-5903.1
Char lengthLess than 19 mm
AfterglowLess than 3 sec.
FlameoutLess 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.

Thermal Sleeve Effectiveness Chart

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.