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What is Parylene ?

PARYLENE COATING IS THE MODERN TECHNOLOGY IN CONFORMAL COATING. Parylene is a conformal protective polymer coating material utilized to uniformly protect any component configuration on such diverse substrates as metal, glass, paper, resin, plastic, ceramic, ferrite & silicon.  A name that refers to a polymer series based on p-Xylylene POLY(PARA-XYLYLENE). A truly conformal, thin, optically clear, inert coating applied in a vacuum chamber at room temperature. A non-line-of-sight coating that follows molecular level deposition process. A chemically pure coating that does not use any catalysts or leachable materials.

Why Parylene ?

  • Optically clear – colourless
  • Biocompatible and biostable
  • Chemically pure, inert and free of catalytic, plasticizer and solvent residues
  • No outgassing
  • No leachable ingredients
  • No ure forces/stresses
  • Environmental friendly
  • No thermal stresses during room temperature deposition
  • Completely conformal
  • Ultra-thin and lightweight
  • Free from pinholes and defects
  • Moisture & chemical barrier
  • High dielectric strength
  • Chemical insolubility
  • Dry film lubricity
  • Particle immobilization
  • Hydrophobicity

Parylene for EV

  • Parylenes already protect millions of automotive electronics, but they’ll be indispensable for protecting the even more numerous and sophisticated electronics in the EV market of tomorrow.


  • With the number of critical electronics in EV systems increasing, ultra-thin, pinhole free Parylene conformal coatings will be essential to delivering the most reliable, high-performance protection for PCBs, ECUs, ADAS, LEDs and more.


  • Parylene provides unmatched thermal stability for protection in harsh environments. These coatings, enabling manufacturers to meet regulatory as well as performance milestones as the global industry moves toward an eco-friendly automotive future.

Automotive Coating Applications

  • Mass air temperature and pressure sensors
  • Emission Sensors
  • Tire Pressure Monitoring Systems(TPMS)
  • Diesel fuel heaters
  • O-rings, seals and engine gaskets
  • Fuel cell and hybrid electronic systems
  • Engine electronics
  • MEMS sensors


Land Drilling & Fracking

  • Dirt
  • Dust
  • Vibration
  • High Pressure
  • Moisture/Humidity/weather
  • Heat/wide temp swings
  • UV Exposure-short or long term
  • Dissolve minerals
  •  Eliminate bacteria
  • Prevent clay from swelling or shifting
  • Corrosion prevention
  • Maintain fluid viscosity
  • pH adjustments
  • Prevent scale deposits
  • Dozens to hundreds that can be used as additives

Offshore Drilling


  • Humidity
  • Salt fog


  • Deep sea
  • Underground
  • Associated with drilling process


  • More challenging and costly to access
  • High cost of down-time
  • Redundant Protection needed

Conformal Coating material considerations

  • Freedom from by-products
  • Application temperatures
  • Cure forces
  • Conformability -uniformity
  • Control of thickness
  • Crevice penetration
  • Regulation/Biocompatibility

Properties of the coating

  • Barrier capabilities
  • Environmental stability
  • Sterilizability and bio acceptability
  • Minimization of mechanical loading

Electronics Coating Applications

  • Printed circuit boards
  • MEMS wafers
  • Probes/pins
  • Rotors/ stators
  • Components
  •       Metal
  •       Brackets
  • Cables
  • Ferrite cores

Electronics Coating Applications

  • Video displays
  • Electronic billboards
  • Marine lighting
  • Transportation signage
  • Outdoor illumination
  • Vehicle lighting
  • Commercial refrigeration
  • Aviation lighting

Electronics Coating Applications

  • ICDs, pacemakers, VADs
  • Drug delivery devices
  • Stents, inhalers(MDI, DPI, nasal)
  • Cochlear and intraocular implants
  • Catheters
  • Neurostimulators
  • Gastric balloons and cuffs
  • Endotracheal tubes
  • Laboratory devices
  • Printed circuit boards
  • Printed circuit boards
  • Semiconductor wafers
  • Military PBCA
  •  Consumer Electronics
  • Automotive Electronics
  • Microelectronic Mechanical Systems (MEMS)
  •  Medical PCBA
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