Dunham Rubber & Belting Corporation
Dunham Rubber & Belting Corporation
682 Commerce Parkway West Drive, Greenwood, IN 46143
Toll Free: 800.876.5340
Tel: 317.888.3002
Fax: 317.888.2335
Email: mail@dunhamrubber.com
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  • Translucent PTFE tubing offers excellent chemical and electrical properties
  • Available from stock with or without a stainless steel wire encircling the O.D. Wire coil provides increased pressure capability and aids in electrical grounding
  • Easily flexed - spiral construction allows far greater flexibility than straight wall tubing
  • Spiral construction also allows for easier cleaning
  • Made from FDA-sanctioned ingredients
  • Available to AMS-T-81914/1 (without wire only)
    (CONTEF with AMS (Aerospace Material Specifications) is available without wire only and is not stocked)
Notes

CONTEF's helical construction aids in self cleaning when flushed with standard cleaning fluids.

The cuffs (straight ends) are made to accept standard barbed fittings. Hose assemblies made to your specifications are available.

PTFE's color will vary naturally from lot to lot, but the quality and physical properties do not change.

FEP CONTEF for longer continuous lengths - up to 500 ft. - is available through custom order.

CONTEF Without Wire:

Vacuum Service: 29.9 in./Hg at 70ºF.

Convolutions are molded into the tubing and will not cold flow into a straight wall under normal conditions.
Unit of Measure

Specifications

Type

 N/A Without Wire

I.D. (Dim. A)

 N/A 3 in

Dim.- B

 N/A 3 in

Dim. C (Nom.)

 N/A 0.062 in

Dim. D (Ref.)

 N/A 3-3/4 in

Dim. F (Nom.)

 N/A 2.940 in

Bend Radius

 N/A 7 in

Working Pressure at 70ºF

 N/A 15 psi

Burst Pressure at 70ºF

 N/A 50 psi

Max. Length

 N/A 30 ft

Notes

 N/A Limited stock availability; lead times and minimums may apply.

Physical Properties

Hardness, Shore D

 N/A 55-65

Min. Tensile Strength

 N/A 2000 psi

Elongation at Break

 N/A 300 %
Brittle Temperature1 N/A <-275 ºF
Max. Operating Temp.2 N/A 500 ºF
Max. Cont. Svc. Temp., Zero Pressure3 N/A 450 ºF

Notes

 N/A Values listed are typical for the material used in manufacture, except where noted, and are meant only as a guide to aid in design. Field testing should be performed to find the actual values for your application.
  • 1 Temperatures are for standard extruded (non-coiled) tubing.
  • 2 Temperatures are for standard extruded (non-coiled) tubing.
  • 3 Temperatures are for standard extruded (non-coiled) tubing.