Posted by Jake Hinojoza on Sep 13, 2019 9:00:00 AM

Parylene Coating Molecules

If you're seeking to learn more about parylene, odds are you've heard a little bit about it's more common uses. (Unless you find parylene's uses and composition fascinating, which, we'll admit, we do). Some of the most common place uses you've likely run into would be in:

  • the automotive industry
  • the medical field
  • defense & aerospace technology
  • consumer electronics

Parylene is a diverse, efficient type of coating that has been developed to fit into and benefit our modern world in many different ways.  

What is Parylene?

Parylene is a commonly used name for a set of polymers, all based on paraxylene. What are the most common polymers? Parylene C, N, and D. There are different benefits to each of these polymers, as explained below:

  1. Parylene C - parylene C has proven itself to be incredibly useful, boasting an impressively low permeability to moisture, corrosive gases, and chemicals.
  2. Parylene N - parylene N is a wonderful option when a more intense coat of protection is important to your use of the polymer. Its constants don't react when there are changes in frequency.
  3. Parylene D - this type of parylene does well under pressure. Whether we're talking physical strength or original electrical properties, parylene D holds itself up under higher temperatures.

All three of these polymers have revolutionized the conformal coating industry. That's why Advanced Coating exists today. 

Now let's look at what are the key benefits of Parylene Coating and why it is considered to be one of the best forms of protection for the surface of electronic devices.

Key Benefits of Parylene Conformal Coating

There are several key benefits of parylene, including its non-liquid nature, versatility, resistant properties, and chemical inertness. Let's take a closer look at each of these.  


The film is liquid-free, therefore making it safe on even the most sensitive electronics. It is also extremely thin, so it can still act as a liquid in that it can fit in small crevices without possibly damaging effects.


Obviously, being non-liquid makes it extremely versatile. In addition, Parylene Conformal Coating has been approved for use on a variety of things, such as:

  1. Conformal Coating For Circuit Boards & Electronic Assemblies (Meets MIL-I-46058C, Type XY)
  2. Particle Immobilization (e.g. Disk Drive Metal Components)
  3. Lubricity (e.g. Catheter Guide Wires)
  4. Dielectric (e.g. Cores/Bobbins)
  5. Hydrophobic (e.g. Biomedical Tubing)
  6. Barrier (e.g. Filters, Membranes, Valves)

Along with being able to coat particular products, it can also be used on paper, glass, metal, plastic, ceramic and other surfaces.

Resistant Properties

The film's resistant properties make it an effective barrier against thermal damage, as well as resistant to chemical attacks.

Chemically Inert

Due to its chemically inert property, parylene has been approved by the Federal Drug Administration (FDA) to be utilized on implantable devices. This assists in maintaining the devices within the body for longer periods of time.

As you can see, Parylene Conformal Coating provides several exceptional benefits for a variety of different products and uses. With its non-liquid properties, versatility and strength, it is the perfect choice for your coating needs. For more information, contact us.

Jake Hinojoza

Written by Jake Hinojoza

Jake received his Bachelors of Business Administration from California State Polytechnic and has been with Advanced Coating since 2009.

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