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Rigid 25% Carbon Filled PTFE Rod Moulded in Standard 250mm Lengths
Rigid 25% Carbon Filled PTFE Rod Moulded in Standard 250mm Lengths

Rigid 25% Carbon Filled PTFE Rod Moulded in Standard 250mm Lengths

Our Moulded Rigid PTFE Rod is available in up to 300mm lengths, please email our sales office regarding availability and lead times.

The addition of Carbon to the PTFE Rod in a percentage by weight of 10-35%, along with a small percentage of graphite tends to improve to a considerable degree, the wear and deformation strength. The carbon leaves the chemical resistance largely unchanged, but substantially modifies the electrical properties.
The addition of Graphite to the PTFE Rod between 5 and 15% lowers the coefficient of friction, improves the deformation strength under load, and to a minor degree, the wear resistance. It is therefore often added to other types of filled PTFE to improve these properties.

Thermal Properties
PTFE Rod is one of the most thermally stable plastic materials; there is no appreciable decomposition below 400°C. The arrangement of the PTFE molecules varies with temperature. There are different transition points, with the most important ones being 19°C corresponding to a modification of some physical properties, and then at 327°C which corresponds to the disappearance of the crystalline structure; the PTFE Rod assumes an amorphous aspect, conserving its own geometric form.
The linear thermal expansion coefficient varies with temperature. In addition, because of the orientation caused by the working process, the PTFE pieces are in general anisotropic; the coefficient of expansion varies also in relation to direction. The coefficient of thermal conductivity of the PTFE Rod does not vary with temperature; it is relatively high so that PTFE can be considered to be a good insulation material.
The specific heat, as well as the heat content (enthalpy) increases with the temperature.

Chemical Resistance
PTFE is practically inert against known elements and compounds. It is attacked only by the alkaline metals in the elementary state, by Chlorine Trifluoride, and by elementary fluorine at high temperatures and pressures. PTFE is insoluble in almost all solvents at temperatures ip to about 300°C. Fluorinated hydrocarbons cause a certain swelling which is however, reversible. Some highly fluorinated oils, at temperatures over 300°C exercise a certain dissolving effect upon PTFE.
Test pieces of PTFE exposed for over twenty years to the most disparate climate conditions have not shown any alteration of their characteristic properties. High energy radiation tends to cause the breaking of the PTFE molecule, so the resistance to radiation is rather poor. The permeability of PTFE is similar to other plastic materials.

Physical Properties
PTFE can be used continuously at 260°C while still possessing a certain compressive plasticity at temperatures approaching absolute zero. PTFE is quite flexible and does not break when subjected to stresses of 0.7 N/mm2 according to ASTM D 790. Flexural modulus is about 350-650 N/mm2 at room temperature. PTFE possesses very high resilience characteristics at low temperatures. The hardness is Shore D measured according to the method ASTM D 2240; values between D50 and D60.
PTFE possesses the lowest friction coefficients of all solid materials, between 0.05 and 0.09. Additional information can be found in the PTFE material sheets available from our sales office.



Colour: White

This product is part of the "PTFE Engineering" group of products, see the range here:

Please note: Hose, Tubing, Ducting and Conduit currently cannot be ordered using the website.
Please speak to a sales agent for a quotation on 01636816612.
PartOD ⌀
No.
RPTFE-CBN-MLD/270270
RPTFE-CBN-MLD/07575
RPTFE-CBN-MLD/125125
RPTFE-CBN-MLD/180180
RPTFE-CBN-MLD/230230
RPTFE-CBN-MLD/06060
RPTFE-CBN-MLD/105105
RPTFE-CBN-MLD/160160
RPTFE-CBN-MLD/200200
RPTFE-CBN-MLD/03232
RPTFE-CBN-MLD/09090
RPTFE-CBN-MLD/140140
RPTFE-CBN-MLD/250250
RPTFE-CBN-MLD/07070
RPTFE-CBN-MLD/120120
RPTFE-CBN-MLD/170170
RPTFE-CBN-MLD/220220
RPTFE-CBN-MLD/05555
RPTFE-CBN-MLD/100100
RPTFE-CBN-MLD/155155
RPTFE-CBN-MLD/300300
RPTFE-CBN-MLD/08080
RPTFE-CBN-MLD/130130
RPTFE-CBN-MLD/190190
RPTFE-CBN-MLD/240240
RPTFE-CBN-MLD/06565
RPTFE-CBN-MLD/110110
RPTFE-CBN-MLD/165165
RPTFE-CBN-MLD/210210
RPTFE-CBN-MLD/05151
RPTFE-CBN-MLD/09595
RPTFE-CBN-MLD/150150

Please be advised; specifications assume standard room temperature unless otherwise specified. All data presented here is intended as a guide only; we are not responsible for errors or discrepancies in the specifications.

Please click here for full terms and conditions.

Please contact our sales office on 01636816612 for further details!

Megaflex Limited - Established 1996
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