Parylene coatings have been used over the years to protect a wide variety of equipment. They are useful in various industries including medical, automotive, electronics, military, etc.

Medical devices and components, such as catheters, needles, stents, electrosurgical tools, eye implants, etc., receive excellent chemical, moisture, and dielectric protection through the parylene coating. The coating gets into all the nooks and crannies of the components because parylene is used in the vapor deposition process.

Parylene coatings are used to protect automotive components such as sensors, circuit boards, MEMS, gaskets, etc. The coatings are non-perforation, ultra-thin and completely conformable, providing excellent chemical, moisture and dielectric barrier protection to components that need to survive harsh automotive environments. They are well suited for the protection of vital components with many applications such as power train control, emissions monitoring, tire system monitoring, and fluid/engine monitoring systems, just to name a few.

In addition, electronic components are also protected against parylene coatings. Parylene is used in the vapor deposition process that ensures an ultra-thin shell that breaks into the smallest crevices and profiles of electronic devices for absolute encapsulation. Since there is no liquid phase in the deposition process, there are no successive build-up, meniscus or bridging effects as applicable in liquid coatings, therefore the excellent dielectric properties of the coatings are not compromised.

Other components, such as sensors, circuit boards, multi-layer packages, and MEMS, are protected with an ultra-thin parylene coating, while LEDs used in various applications, such as utility meters, agricultural equipment, hydrocarbon drilling, etc., are not. they are set aside. The coatings are lightweight with excellent barrier properties that do not add significant dimension or mass to delicate components. They are UV stable and optically clear, making them preferable to other conformal coatings such as urethanes, acrylics, silicones, and potting compounds used for older electronic devices.

In the military, parylene coating has been used for so many years. Parylene N,C and HT are QPL listed for MIL-I-46058 and meet the requirements of OPC-CC-830. Parylene HT has the smallest molecular structure making it easily penetrate small areas to provide absolute coverage without compromising operational capabilities. It also has the ability to provide long-term thermal stability of up to 350°C. It is useful for the protection of military components such as sensors, circuit boards, LEDs, multi-layer packages, etc. These components are used in different applications such as radar systems, aircraft control systems, weapons control systems, etc.