Teflon PFA Copolymer Disk

Teflon PFA Copolymer Disk offers the same outstanding chemical inertness, high-temperature performance, and non-stick characteristics as other PFA forms but in a precision-machined circular format. This shape is ideal for sealing interfaces, optical windows in corrosive environments, and mechanically stable sample holders. Industries use PFA disks in analytical instrumentation, semiconductor processing, and marine chemical containment. Specific applications include corrosion-proof viewport covers, inert reaction vessel lids, and laser window protection in aggressive chemical atmospheres. In research, they serve in spectroscopy experiments involving corrosive media, thermal cycling studies, and chemical compatibility testing. The combination of PFA’s durability with the disk’s structural precision ensures long-term stability in both industrial and laboratory applications.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Disc

Thickness		±20%

Material Properties for Polymers

Chemical Resistance

Element	Value
Acids - concentrated	Excellent
Acids - dilute	Excellent
Alcohols	Excellent
Alkalis	Excellent
Aromatic hydrocarbons	Excellent
Greases and Oils	Excellent
Halogens	Excellent
Ketones	Excellent

Electrical Properties

Element	Value
Dielectric constant @1kHz	2.05-2.06
Dielectric constant @1MHz	2.05-2.06
Dissipation factor @ 1kHz	0.0001-0.0002
Dissipation factor @ 1MHz	0.0008

Physical Properties

Element	Value
Flammability	V0
Refractive index	1.35
Limiting oxygen index( % )	95%
Water absorption( % )	0.03
Density( gcm⁻³ )	2.15

Mechanical Properties

Element	Value
Elongation at break( % )	300
Tensile strength( MPa )	25

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	63-80
Heat-deflection temperature - 1.8MPa( C )	48-50
Upper working temperature( C )	260
Thermal conductivity( W m⁻¹ K⁻¹ )	0.19
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	76-78