PTFE Sheets

PTFE Sheet | High-Performance Chemical & Electrical Insulation Material

PTFE Sheets (Polytetrafluoroethylene) are manufactured by suspension polymerization of PTFE resin followed by molding or skiving processes. PTFE is known for having the best chemical resistance among all plastics, outstanding aging resistance, and the lowest coefficient of friction among solid materials.

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PTFE Sheet | High-Performance Chemical & Electrical Insulation Material

PTFE sheets can operate continuously in a wide temperature range from –180 °C to +260 °C (without load). They are chemically inert, non-stick, non-absorbing, and provide excellent electrical insulation, making them ideal for chemical, electrical, mechanical, and high-purity applications.

PTFE sheets are available as molded sheets, skived sheets, tapes, and ultra-thin films, allowing flexibility for different industrial requirements.

Product Details

PTFE Product Types, Specifications & Physical Properties

Category	Type / Grade	Thickness (mm)	Width (mm)	Length (mm)	Remarks / Values
Product Types & Specifications
Sheet / Tape	PTFE Molded Sheet	4 – 600	150 – 2000	Max 2000	Compression molded
Sheet	PTFE Skived Sheet	0.3 – 6.5	300 – 2700	≥ 200	Skiving process
Tape	PTFE Molded Tape	0.5 – 4.0	100 – 500	≥ 1000	High thickness tolerance
PTFE Skived Film Specifications
Film Grade	High Density	0.015 – 0.040	30 – 90	≥ 500	Precision thin film
Film Grade	Semi Density	0.03 – 0.10	60 – 90	≥ 1000	Balanced mechanical properties
Film Grade	Common	0.02 – 0.30	60 – 100	≥ 500	General purpose
Main Physical & Electrical Properties – General
Property	Apparent Density	2.10 – 2.30 g/cm³			Typical
Property	Tensile Strength (min)	15.0 MPa			Minimum
Property	Elongation at Break (min)	150 %			Minimum
Property	Dielectric Strength (min)	10 kV/mm			Electrical insulation
Density-Based Performance
Mechanical	Tensile Strength	≥ 30 MPa	≥ 30 MPa	≥ 10 MPa	High / Semi / Common
Mechanical	Elongation at Break	≥ 30 %	≥ 60 %	≥ 100 %	High / Semi / Common
Electrical	Dielectric Loss Tangent (1 MHz)	2.5 × 10⁻⁴	—	—	Low loss
Electrical	Dielectric Constant (1 MHz)	1.8 – 2.2	—	—	Stable
Electrical	DC Breakdown Voltage (Normal Temp)	200 / 40 kV/m	60 / 40 kV/m	30 kV/m	High / Semi / Common

NEMA, IEC, Mil Spec Material Comparative Table
NEMA	IEC	Mil Spec	Resin	Substrate
NEMA G-10	EPGC 201, 21*	MIL-I-24768/2 GEE	Epoxy	Glass Cloth
NEMA FR4	EPGC 202, 23*	MIL-I-24768/27 GEE-F	Epoxy	Glass Cloth
NEMA G-11	EPGC 203, 22*	MIL-I-24768/3 GEB	Epoxy	Glass Cloth
NEMA FR5	EPGC 204	MIL-I-24768/28 GEB-F	Epoxy	Glass Cloth
—	EPGC 205	—	Epoxy	Glass Cloth
—	EPGC 306	—	Epoxy	Glass Cloth
—	EPGC 307	—	Epoxy	Glass Cloth
—	EPGC 308	—	Epoxy	Glass Cloth
—	EPGC 309	—	Epoxy	Glass Cloth
—	EPGC 310	—	Epoxy	Glass Cloth
—	EPGC 311	—	Epoxy	Glass Cloth
—	EPGM 203	—	Epoxy	Glass Mat
—	EPPC 301	—	Epoxy	Polyester Cloth
NEMA G-5	MFGC 201, 20*	MIL-I-24768/8 GMG	Melamine	Glass Cloth
NEMA G-9	MFGC 201	MIL-I-24768/1 GME	Melamine	Glass Cloth
NEMA C	PFCC 201, 23*	MIL-I-24768/16 PBM	Phenolic	Cotton Cloth
NEMA CE	PFCC 202, 22*	MIL-I-24768/14 FBG	Phenolic	Cotton Cloth
NEMA L	PFCC 203	MIL-I-24768/15 FBI	Phenolic	Cotton Cloth
NEMA LE	PFCC 204, 21, 24	MIL-I-24768/13 FBE	Phenolic	Cotton Cloth
NEMA X	PFCP 201, 21*	MIL-I-24768/12 PBM	Phenolic	Cellulosic Paper
NEMA XP	PFCP 201	MIL-I-24768/19 PBM-P	Phenolic	Cellulosic Paper
NEMA XXX	PFCP 204	MIL-I-24768/10 PBE	Phenolic	Cellulosic Paper
NEMA XX	PFCP 202, 23*	MIL-I-24768/11 PBG	Phenolic	Cellulosic Paper
NEMA XXP	PFCP 203	MIL-I-24768/21 PBG-P	Phenolic	Cellulosic Paper
NEMA XXXP	PFCP 204	MIL-I-24768/22 PBE-P	Phenolic	Cellulosic Paper
NEMA XPC	PFCP 207	MIL-I-24768/20 PBM-C	Phenolic	Cellulosic Paper
NEMA G-3	PFGC 201, 21*	MIL-I-24768/18 GPG	Phenolic	Glass Cloth
NEMA GPO-1	UPGM 201	MIL-I-24768/4	Polyester	Glass Mat
NEMA GPO-2	UPGM 202	MIL-I-24768/5	Polyester	Glass Mat
NEMA GPO-3	UPGM 203	MIL-I-24768/6	Polyester	Glass Mat
—	UPGM 205	—	Polyester	Glass Mat
—	PIGC 301	—	Polyimide	Glass Cloth
NEMA G-7	SIGC 201, 21*	MIL-I-24768/17 GSG	Silicone	Glass Cloth