Curtiss-Wright provides Parylene coating services through its Surface Technologies division. Parylene coatings are ultra-thin, conformal polymer films that act as lubricious, chemical-resistant barriers. Curtiss-Wright has over 25 years of experience coating complex medical devices, electronics, and components for industries such as aerospace and defense. Its Parylene coatings protect against moisture, chemicals, and corrosion while adding minimal weight or thickness to substrates.

1. 1 | May 20, 2015 | © Curtiss-Wright
Surface Technologies
Division
Prepared by:
Jason Delaney
Technical Sales Manager
T: +353 872715757
E: jason.delaney@cwst.com
W: www.parylene.co.uk
Curtiss-Wright Parylene Coatings
An introduction to our services 2015

2. 2 | May 20, 2015 | © Curtiss-Wright
Agenda
 Curtiss-Wright Corporation
 Curtiss-Wright Parylene coatings
 Parylene, its properties and applications

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CURTISS-WRIGHT CORPORATION
Founded by Glenn Curtiss and The Wright Brothers 1929
Main industries served:
Aerospace, Defence, Medical, Energy, Industrial Engineering
Full Time Employees: 12K ±
Annual Revenues: $3B±
Highly engineered products and services in three business segments:-
Surface Technologies Motion control Flow control

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Curtiss-Wright Parylene coatings
Current Parylene coating sites:
4 North America (Texas, California, Minneapolis, Ottwa;Canada)
1 Europe (Galway, Ireland)
ISO13485 & ISO 9001 certified

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Quality and Expertise
 Leveraging over 25yrs of experience and expertise in
Parylene coating of complex geometries and challenging
substrates.
 Continually developing applications, adhesion promotion
and production methods through centres of excellence
internal and external.
 Coating facilities are ISO13485 & ISO 9001 certified
 Our Proprietary Dimer is over 99.7% pure.
Highest yielding and most uniform coating in the industry.
 Our Parylene is tested to the relevant ISO10993 and USP
Class VI tests.
 Device and drug master files are held with the US FDA and
available to support client submissions. MAF No.1176 held
with the US FDA.

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Service commitment and value add
 Flexible responsive customer focused services:
 Supporting evaluation and development runs through to
commercial production services.
 Providing Kanban services – Rapid response, receiving
parts to meet production needs, minimising WIP and
stock levels.
 Lean supply chain. Liaising with approved suppliers to
provide one point of contact for supply of Parylene
coated parts. One point of responsibility for quality and
supply chain fulfilment.
 Co-ordinating with quality, purchasing and production to
assure optimisation of service and support on going.

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CW Parylene coatings
 Protects and Lubricates critical components:
Metals Elastomers Electronics Plastics Implantables
 Used widely in Medical device, Automotive, Aerospace and Defence applications.
 Conformal, ultra thin and light weight.
 Lubricious hydrophobic/dry film coating.
 Highly resistant to chemicals and moisture.
 An excellent environmental protective barrier.
 Most common variants:

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Parylene coating process
 Generic name for a unique polymer series based on p-Xylyene.
 The vapour deposition is carried out under vacuum at room temperature.
 The single coating builds up one molecule at a time, encapsulating any and all
exposed surfaces; resulting in a highly conformal coating.

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Properties of Parylene
 Lightweight and Ultra thin : Controlled as low as 0.05µm. Pin hole free at 0.6µm.
 No stressors: thermal or cut forces on the device. No ingredients to out gas or leech.
 Highly conformal coating: Suitable for substrates with very complex typography e.g.
Stents, Miniature PCBs
 Bio compatible, Bio Stable and Non- thrombogenic. ISO10993 & UPS Class VI tested.
 Green chemistry: chemically inert and non-toxic. RoHS and Reach compliant.
 Dry film lubricant: Low co-efficient of friction 0.25 static and dynamic. (N)
 Environment barrier: Protects against moisture, corrosive fluids, chemicals, gases,
temperature and fungus
 Particulate free
 High dielectric strength: Excellent at containing electrical energy. 7kVA at 25µm
 Adheres well to metal, rubber and plastics
 Optically clear

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Medical Device Applications
 Dry film Medical coating – Medical device applications:
 Mandrels / Wires – catheter lumen, balloon welding, forming and tipping.
 Guide wires – braided and straight.
 Needles and Probes
 Medical Elastomers – removing tackiness of silicone and rubber components.
 Plastic and metal subassemblies in surgical tools and moving parts.
 Environmental protection - Medical device applications:
 Vascular and peripheral stents
 Gastric implants
 Surgical entry devices – trocars, speculums
 Pacemakers – leads and PCB’s
 Electrosurgical tools
 Cochlear and ocular devices
 Medical Elastomers – o’rings, gaskets and seals
 Needles and probes
 Medical electronics and diagnostics

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Elastomeric applications
 Coating typically 0.5µm - 2µm
 Thermally stable between -200°C and 140°C
 Resolves tackiness without adding weight or materially affecting elasticity.
 Seals micro porosity protecting against potential leachable ingredients.
 Final product benefits from a bio compatible, non-toxic and chemically inert environmentally protective
barrier.
 Typical elastomeric applications:
 Gaskets / O-rings /Seals – Environmental barrier and tackiness.
 Keypads: Silky finish, protecting printed legend.
 Stoppers and syringe plunger tips: low static co-efficient of friction
 3D Printed models
 Silicon and Rubber Tubing
 Catheter components
 Entry devices

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PCB’s after 100+ hours salt spray testing
Parylene barrier properties - Electronics
Uncoated Coated

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Barrier properties: Comparisons

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Conformal coating comparison

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Defence electronic application:
 Military ground vehicle electronics
 6 board controller assembly
 Existing conformal protective coating allowed ingress of gases present in the boxed unit,
causing damage to ceramic components resulting in board failures.
 Moisture protection also required as the units are not hermitically sealed.
 Solution:
 The chemical and moisture resistance of Parylene C at 12-15µm meets and exceeds the
needed protection.

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Additional benefits for Electronics coated with Parylene
 RoHS compliance and Lead-free solders:
 Tin Whiskers more prevalent.
 Parylene is an excellent whisker suppressant.
 In test found to be the best thin film conformal coating.
 First choice in high reliability electronics: Medical Device, Military and Aerospace.
 Curtiss-Wright Controls carried out testing on coatings to improve joint life of Lead-free
solder joints for military electronic applications.
 Parylene far surpassed the performance of any other
conformal coating tested.
 Joint life improving by an average of 2X under thermal
shock testing (-40/125C)

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Aerospace/Aviation applications:
 Electrical cable raceways
 Problem:
 Anodised aluminium exposed to aviation chemicals.
 Risk of electrical discharge from lightening strike.
 Current solution adds significant weight and cost.
 Solution:
 Parylene C at 20µm
 Voltage withstand of >5kVa
 Chemical resistance far surpassing other coatings tested
 Adds very little weight.
 Reduction in cost $2.50 vs $12 -20 per unit.

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Other application examples:
 Aviation – Copper nickel back plate. (Electrical Housing)
 Parylene C providing electrical barrier protection. 15-18µm
 Elastomeric Gasket/ O-rings
 Parylene C barrier to gases and reducing tackiness of the
substrate and maintain elasticity at 1µm.
 Under vehicle inspection – LEDs rated to IP67.
 Parylene C barrier at 18µm.
 Fasteners – Electrical barrier to lightening strike.
 Elastomeric parts - Keypads, Gaskets, O-rings – Environmental barrier and tackiness.
 Power supplies, Sensors – Environmental and Electrical barrier.
 Magnets, wire round and ferrite cores - Environmental and Electrical barrier.

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CW Parylene coatings
 Protects and Lubricates critical components:
Metals Elastomers Electronics Plastics Implantables
 Used widely in Medical device, Automotive, Aerospace and Defence applications.
 Conformal, ultra thin and light weight.
 Lubricious hydrophobic/dry film coating.
 Highly resistant to chemicals and moisture.
 An excellent environmental protective barrier.
 Most common variants:

20. 20 | May 20, 2015 | © Curtiss-Wright
Surface Technologies
Division
Thank You
Prepared by:
Jason Delaney
Technical Sales Manager
T: +353 872715757
E: jason.delaney@cwst.com
W: www.parylene.co.u