PTFE Rod

PTFE Rod is a high-performance cylindrical polymer form composed of polytetrafluoroethylene, known for its exceptional non-reactivity, low friction, and dielectric stability. Produced by compression or extrusion molding, it achieves purity levels ≥99% and withstands thermal extremes from −200°C to +260°C. The rod’s attributes include hydrophobicity, wear resistance, and resistance to nearly all chemical agents. Key applications span aerospace seals, chemical-resistant insulators, and clinical implants. Specific technologies include thrust bearing systems in hydro-generators, micro-machined diffusers in semiconductor reactors, and bridge scaffolds in bone tissue engineering. Its inertness, coupled with biocompatibility and nonflammability, supports advanced uses in oilfield drilling, medical implants, and high-frequency RF systems. PTFE rods are foundational in tribological studies, nano-composite engineering, and precision fluidics. As an electret and as filler-reinforced composites, PTFE continues to shape modern materials science through its adaptability across demanding mechanical and environmental interfaces.

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Tolerance

Properties

Reference & Citations

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Tolerances

Rod

Diameter		+20% / -10%

Material Properties for Polymers

Chemical Resistance

Element	Value
Acids - concentrated	Good
Acids - dilute	Good
Alcohols	Good
Alkalis	Good
Aromatic hydrocarbons	Good
Greases and Oils	Good
Halogenated Hydrocarbons	Good
Halogens	Good
Ketones	Good

Mechanical Properties

Element	Value
Coefficient of friction	0.05-0.2
Hardness - Rockwell	D50-55 - Shore
Poisson's ratio	0.46
Elongation at break( % )	400
Tensile modulus( GPa )	0.3-0.8
Izod impact strength( J m⁻¹ )	160
Tensile strength( MPa )	Oct-40

Electrical Properties

Element	Value
Dielectric constant @1MHz	2-2.1
Dissipation factor @ 1MHz	0.0003-0.0007
Dielectric strength( kV mm⁻¹ )	50-170
Surface resistivity( Ohm/sq )	10¹⁷
Volume resistivity( Ohmcm )	10¹⁸-10¹⁹

Physical Properties

Element	Value
Flammability	V0
Radiation resistance	Poor
Refractive index	1.38
Resistance to Ultra-violet	Excellent
Limiting oxygen index( % )	95
Water absorption - over 24 hours( % )	0.01
Density( gcm⁻³ )	2.2

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	120
Heat-deflection temperature - 1.8MPa( C )	54
Lower working temperature( C )	-260
Upper working temperature( C )	180-260
Specific heat( J K⁻¹ kg⁻¹ )	1000
Thermal conductivity( W m⁻¹ K⁻¹ )	0.25@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	100-160