PTFE Sheets Manufacturer in India
PTFE Sheets (Polytetrafluoroethylene) embody the pinnacle of chemical and electrical insulation materials; a fluoropolymer which is specially designed for unmatched excellence in all fields including chemical resistance, thermal stability and electrical insulation compared to any other plastic. Also known as Teflon sheet in the trade, the PTFE has unique characteristics that make it stand out among plastics due to its ability to have almost universal chemical inertness, lowest coefficient of friction of any solid and excellent thermal stability in a wide range of temperatures.
We at Harnawa Inc. are renowned suppliers of PTFE sheets, films and tapes certified for their quality to electrical and chemical processing industries in India.
What is PTFE Sheet?
PTFE sheet is made by using the suspension polymerization of PTFE resin and can be made by compression molding or precision skiving processes for making a sheet of desired thickness. The process gives a non-porous, dense fluoropolymer with a unique combination of characteristics, which include chemical inertness against nearly all kinds of industrial chemicals, non-sticky nature, non-absorbent nature, and good insulating capacity electrically.
White Teflon Sheet — Purity & Consistency
Recognized by its distinctive white Teflon sheet appearance, the whiteness of PTFE is an aesthetic feature that indicates its purity and inertness. Additionally, the constant whiteness of PTFE is one of the features that make it easily recognizable in manufacturing plants, which is especially significant for high-purity environments or those close to the food and pharmaceutical industries.
Virgin PTFE Sheet — Why Purity Grade Matters
In regard to ordering virgin PTFE sheets, customers are requiring the material to be produced using 100 percent pure, non-filled PTFE resin without reprocessing any regrind, filler, and additives. The virgin PTFE ensures that all the benefits of the material in terms of chemical resistance, dielectric behavior, and high purity are utilized. Harnawa Inc. offers virgin PTFE sheets when the application demands high performance and non-filled material rather than filled PTFE sheets which have certain improved mechanical characteristics.
Class O Insulation Rating
PTFE belongs to Class O of temperature classifications for electrical insulating purposes — the highest category which does not have standardized continuous temperature ratings as per the conventional NEMA / IEC Thermal Class system because of the extremely large and non-standardized temperature range of PTFE. This clearly demonstrates how much more beyond the limits of Classes A to H the properties of PTFE actually lie.
High Temperature Plastic Sheet — Operating Range
PTFE sheet material is a plastic material suitable for high temperatures that can work consistently throughout a very wide range, ranging from –180°C to +260°C (no load). It is hard to find other plastics that would behave the same way as PTFE does in extreme cryogenic temperatures as well as extremely hot conditions.
Key Physical & Electrical Properties
Harnawa Inc.’s PTFE sheets are manufactured and tested to the following general performance benchmarks:
Apparent Density: 2.10 – 2.30 g/cm³
Tensile Strength (min.): 15.0 MPa (upto ≥30 MPa depending on density grade)
Elongation at Break (min.): 150% (upto ≥100% depending on density grade)
Dielectric Strength (min.): 10 kV/mm
Dielectric Loss Tangent (1 MHz): 2.5 x 10⁻⁴ — shows minimal loss of signals
Dielectric Constant (1 MHz): 1.8 – 2.2; constant with respect to frequency
DC Breakdown Voltage: 200 kV/m depending on density grade
It is because of these properties of PTFE sheet, especially the high value of dielectric strength and low dielectric loss, that it becomes an ideal insulator for electronic applications as well.
Available Formats
PTFE sheets from Harnawa Inc. are supplied across multiple product formats to match application requirements:
- PTFE Molded Sheet – Thickness: 4-600mm, Compression molded, Ideal for structural and gasket applications
- PTFE Skived Sheet – Thickness: 0.3-6.5mm, Skived for uniformity in thin gauge sheet
- PTFE Molded Tape – Thickness: 0.5-4.0mm, Tolerant in thickness for sealing and wrapping applications
- PTFE Skived Film – High Density & Semi Density in thickness range of 0.015-0.30mm, Ideal for thin film and high frequency electrical applications
Typical Applications of PTFE Sheet
PTFE sheets are specified across a wide range of demanding electrical and industrial applications:
Electrical & Electronics
Components for high-frequency and RF insulation
Components for transformers & coils insulation
Capacitor insulation
Insulation for switchgears & industrial electronics
Chemical & Process Industry
Gasketing, sealing & lining materials for corrosive chemicals
Anti-adhesive coatings for process machinery
Motors & Generators
Insulation components for use in Motors and Generators (EV motors included)
High Voltage Motors Insulation Components
High Temperature/Aerospace Industry Applications
Equipment Used in Oil and Gas Industry
Metallurgy/Chemical Process Machinery
Aerospace Insulation Components
General Purpose
Bearings, Bushings & Low Friction Mechanical Components
Heaters and Heat Insulation Components
Appliances Components
Building a Complete Insulation System
PTFE sheet is often specified alongside other high-performance insulation materials to build a complete electrical insulation system across motors, transformers, and industrial equipment:
Sourcing all of these materials from a single, certified supplier ensures compatibility, consistent quality standards, and simplified procurement for OEMs building high-reliability electrical and chemical-processing equipment.
Certifications & Quality Assurance
Every batch of the PTFE sheets manufactured by Harnawa Inc. is made in accordance with the following international quality standards:
- Certified by UL
- CE certified
- ROHS certified
- ISO 9001:2015 certified manufacturing
PTFE Sheets Manufacturer in India — Why Choose Harnawa Inc.
Harnawa Inc. is a trusted manufacturer of PTFE sheets in India and also an authorized Electrical Insulation Materials Manufacturer in India. There is a wide range of items available including molded sheets, skived sheets, tapes, and films apart from electrical insulation materials.
What sets us apart:
- Scope of virgin PTFE sheets and films available includes moldable, skived and thin film varieties
- Temperature ranges from –180°C to +260°C, suitable for cryogenic and high temperature applications
- Nationwide coverage in cities like Mumbai, Delhi, Pune, Ahmedabad and many others
- Quality specifications approved by UL, CE, RoHS, ISO 9001:2015 and REACH
- A one-stop solution for PTFE sheets as well as full range of insulating materials
Frequently Asked Questions
1.What is the difference between PTFE sheet and Teflon sheet?
“Teflon” is a commonly used brand name that is registered with PTFE (Polytetrafluoroethylene). “Teflon sheet” and “PTFE sheet” indicate the same fluoropolymer in regular industrial use.
2.What is virgin PTFE sheet?
Virgin PTFE sheets are produced using 100% pure, unfilled PTFE resin and offer maximum chemical resistance and dielectric properties of the material.
3.In what temperature range do PTFE sheets work?
PTFE sheets have continuous operation range of -180°C to +260°C (no load).
4.Why is PTFE insulation called Class O?
The operational range of PTFE is far beyond NEMA/IEC classification from Class A up to Class H, thus it is Class O insulation material.
5.In what forms is PTFE sheet available?
At Harnawa Inc. you may find PTFE in the form of molded sheet, skived sheet, molded tape, skived film (High Density, Semi Density and Common).
