Polytetrafluoro Ethylene (PTFE) Coatings

Polytetrafluoro Ethylene (PTFE) Coatings

PTFE (Polytetrafluoro Ethylene) coatings are two-coat (primer/topcoat) systems that has a successful application as non-stick coatings. PTFE non-stick coated products has highest operating temperature among any fluoropolymer, very low coefficient of friction, excellent abrasion resistance, and great chemical resistance. PTFE coatings can withstand a maximum of 600°F. The surface has a high lubricity property. PTFE coating is typically applied to a thickness of 1-2 mils.


Benefits of PTFE Coating

  1. PTFE coating is an ideal non-stick surface that makes your product a more convenient choice. PTFE coating is very effective and prevents frustrating sticking which is common in cooking products. Some consumers looks specifically for a non-stick PTFE coating, which makes your product even more appealing.
  2. PTFE coating is heat and water resistant. The surface is easy to clean and water does not cause the industrial coating to become saturated. In most cases, the surface can be quickly wiped clean or even rinsed to remove any remaining debris in seconds. PTFE coating can also withstand temperatures of up to 600 °F (or 260 °C). This makes PTFE Coating great choice for a number of heat intensive applications.
  3. Chemical resistance is a concern for some products. PTFE coatings are not affected by most chemicals found in its environment. If you are concerned about chemical contact, PTFE is an excellent choice.
  4. The right coating can help your product exceed customer expectations, whether you sell directly to consumers or create parts and equipment for businesses and organizations. The most important step is choosing a product that will enhance your parts at an economical price. You can enhance the properties and capabilities of your parts and products with the help of a quality PTFE coating.


PTFE coating is available in aqueous based forms. PTFE coatings can provide the solution to many engineering questions particularly those relating to non-stick (release), low friction, chemical resistance and wear resistance, there are many other solutions that can be resolved by the application of PTFE coatings.



Density (g/cm³)


Water Absorption, 24 hrs (%)

< 0.01


Tensile Strength (psi)


Tensile Elongation at Break (%)


Flexural Strength (psi)

No break

Folding Endurance (cycles)

> 106

Flexural Modulus (psi)


Hardness, Shore D


IZOD Notched Impact (ft-lb/in)



Melting Temp (°F / °C)

635 / 335

Max Operating Temp (°F / °C)

500 / 260

Flammability Rating



Dielectric Constant at 1 MHz


Dissipation Factor at 1 MHz

< 0.0002

Arc Resistance (sec)

< 300

Volume Resistivity (ohm-cm)at 50% RH

> 1018




PTFE coated fastener's provides great corrosion resistance, very low coefficient of friction, consistent tensioning and ease of installation and removal. Extensive testing and field use have proven that the future of coated fastener’s lies with Fluoropolymer coatings. Previously hot dip, galvanized, cadium or zinc plated fastener’s were considered the standard. But these coatings could not stand up to the corrosive atmospheres prevalent in many industries. The most widely used application is on B7 studs with 2H nuts.


Dramatic improvements in efficiency, life expectancy and corrosion resistance are claimed to be imparted to Nut and Bolt connectors by the application of a low friction PTFE coating. PTFE coated connectors have out-performed all others in aggressive any noticeable effect.


Technical Specifications


Use Temperatures

Working temp. range up to + 260°C

Corrosioin Resistance

Salt Spray (ASTM B117) up to 3,000 hrs (Nuts not frozen)

Pencil Hardness

5H – 6H (ASTM D3363-92A)

Kinetic Friction Coefficient

0.06 – 0.08


Nominal 0.001" (1 mil)


160 in lb (ASTM D2794-93)


5B (ASTM D3359-95)



Tensile Strength

4,000 psi

Operating Pressure

Up to 100,000 psi


PTFE coating on fastener’s will have a uniform thickness of 20 ± 5 microns to 45± 5 microns thick.


Why to Coat Bolts with PTFE Coatings?


  1. Cleaning and painting of bare steel bolts in the field is likely to be difficult, expensive, and in some cases, not feasible.
  2. The plain bolts, after stuffing in the holes, are expected to sit out in the weather for an extended period of time and get dried out and rusty, making correct tightening difficult or impossible.
  3. Release or retightening of the bolt within the foreseeable future is necessary.
  4. Due to its unique benefits, Fluoropolymer Coating has been applied to various types and grades of fasteners. The water works industry takes advantage of the superior corrosion resistance properties by coating Hex-head bolts for underground service. Stainless steel fasteners, used in many different industries, are coated for lubricity and anti-galling.
  5. Fluoropolymer coatings are extremely durable and not easily removed. However, during assembly of fasteners in the field, the coating can sometimes be damaged. With most other fluoropolymer coatings, this results in exposed bare metal that quickly begins to show corrosion and causes the coating to fail. Our metallic base coat ensures superior corrosion resistance and continues to provide protection even under the harshest conditions.


PTFE Fasteners Test



Food grade coatings is of great advantage for industries where non-stick property is main criteria. Because of Non-stick properties, chemical powders do not stick to the tray. It is widely used in chemical, pharmaceutical industries and Consumer goods like cooking utensils.

Thickness : 25 to 100 Microns
Working Temp. : upto +250 °C




This industrial grade of coatings are widely used in plastic industries, Textile Drying Rollers, and has excellent non-stick properties.

Thickness : 25 to 100 Microns
Working Temp. : from -50 C to +250 C



We can bond PTFE on any vessel or any plain plate of various sizes, with the thickness range of 0.2 mm to 6 mm. We do PTFE bonding also as per the customer’s specifications.


Our PTFE bonding is backed by our Test Certificate for our customers satisfaction.



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