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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  • Chemically inert; low permeability
  • Manufactured from FDA-sanctioned ingredients for use with food contact surfaces
  • Lowest coefficient of friction of any solid material
  • Widest service temperature of any plastic tubing (-275ºF to 500ºF)
  • Excellent electrical and weathering properties; non-flammable
  • Made without plasticizer which can leach into critical streams
  • Ultra-high-purity grades available for the semiconductor industry.
Notes

Almost totally inert, FLUOROPOLYMER tubing can be used with virtually all industrial solvents, chemicals, and corrosive materials, even at elevated temperatures. It does, however, react with fluorine, molten sodium hydroxide, and molten alkali metals.

FLUOROPOLYMER tubing can be steam or chemically sterilized in-line with any industrial cleaner, solvent, or sterilizing method.

FLUOROPOLYMER’s non-stick property allows transport of viscous, sticky materials without line clogging. It also offers outstanding aging resistance.

PTFE’s translucent white color will vary naturally from lot to lot, however the quality and physical properties do not change. FEP and PFA are clearer and can be heat sealed and heat bonded.

Permanent color striping, etching, and longer-than-listed lengths are available through minimum order. Polyethylene-jacketed, thin-wall fluoropolymer tubing, for low-cost purity, is also available through minimum order.

What is it?

PTFE (Polytetrafluoroethylene) resin is supplied in powdered form, which is mixed, preformed, and extruded into a paste, and then finally tubing. It is translucent white in color.

FEP (Fluorinated Ethylene Propylene) resin is pelletized for its hot-melt extrusion process and is a clear tubing.

PFA (Perfluoroalkoxy) resin is also a pelletized product which is hot melt extruded. It, too, is clear.
Unit of Measure

Specifications

Material

 N/A FEP

I.D.

 N/A 5/16 in

O.D.

 N/A 7/16 in

Wall

 N/A 0.063 in

Working Pressure at 70ºF

 N/A 175 psi

Burst Pressure at 70ºF

 N/A 882 psi
Standard Coil Length1 N/A 100 ft25 ft50 ft

Notes

 N/A Limited stock item; lead times and minimums apply.
PTFE is coiled in single-section 25 ft. packages, maximum two-section 50 ft. packages, or maximum three-section 100 ft. packages. All FEP and PFA lengths are supplied in single-section packages.

Physical Properties

Hardness, Shore D

 N/A 55

Tensile Strength

 N/A 3500 psi

Elongation at Break

 N/A 300 %

Brittle Temperature

 N/A <-400 ºF

Max. Continuous Operating Temp.

 N/A 400 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 Sold by standard coil length only.