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FlexKing® Type DE

The most rugged of the two-ply FlexKing® products, the Type DE has an unequaled reliability record for performance under the most severe conditions. It resists rupture and flex-fatigue, and is mildew and rot proof. It features a double-ply of neoprene coated polyester fabric and a helical wire reinforcement. It’s also available in single ply construction – FlexKing® SE.

Technical Overview

Random Lengths No Cuffed Ends
  • Up to 8″ — -0″
    + .06″
Inside Diameter
  • Over 8″ — -0″
    + .08″
O.A.L. (Overall Length)
  • + 1/4″ per foot length
  • – 1/8″ per foot length
Cuffed-Soft Ends
Inside Diameter
  • Up to 8″ — -0″
    + .06″
  • Over 8″ — -0″
    + .08″
O.A.L. (Overall Length)
  • ±1/4”per foot length
Cuff (Soft End) Length
  • + 1/4″
  • – 1/8″

* These product series when coiled, and stored or shipped in this manner, will frequently “set” or tend to remain in that position. They also have a tendency to shrink 2 to 3% in overall length due to the nature of relative light walled rubber, cotton or nylon. Duct/hose can be installed to nominal length.


Thermoid Industrial Ducting – Brochure

Coatings & Finishes

The coatings offered by Thermoid can reduce the loss of air and gases through the duct wall, increase abrasion and chemical resistance, reduce ducting flexibility, as well as the inside diameter of the duct, and increase the weight and wall thickness of the duct.
Available Coatings
  • Neoprene (CR) (Black) – Neoprene is the most commonly used industrial duct coating. It resists ozone, sunlight oxidation, heat and flame. Neoprene performs well in contact with oils, water and some chemicals. It has good tensile strength and resilience.
Maximum Recommended Coatings
  • Neoprene – 4 Coats (For coating, specify duct type and number of dip coats).
The following end finishes are integrally manufactured into the ducting.
Soft End
  • That portion of the duct where the wire reinforcement is omitted, having the same number of plies as duct body, plus one additional ply of fabric over soft area. This type of end provides a smooth clamping area.
Reduced End (Special)
  • The hose end has an ID that is smaller than the duct body. A rubber insert usually forms this end.
Plain End
  • Hose with a plain end is simply cut at a given point, the end being the same as the duct body. The wire at the cut end is crimped back to prevent snagging. All standard items are furnished with plain ends.
Belled End (Special)
  • A belled end has a soft end with an ID larger than the duct body.