company tower banner
STIRRI® USA Company Logo


HYDRACOAT is the go-to conformal coating for electronics. With top-notch resistance to humidity, moisture, and weather, it offers lasting protection in any setting. Non-conductive and adhesive, it works seamlessly on plastics, glass, ceramic, and metal. Plus, it's non-flammable and water-resistant, making it perfect for defense, automotive, LED, medical, naval, and printed circuit board applications.

Brand: HYDRACOAT (1 products)

Product Type: Clearcoat, Conformal Coating

Features: Electrically Non Conductive, Fast Drying, Good Adhesion, Good Weather Fastness, Humidity Resistant, Moisture Resistant, Water Resistant

Application Area: Automotive Applications, Defense, Flexible Circuits, LEDs, Medical Applications, Naval Application, Printed Circuit Boards

Compatible Substrates & Surfaces: Ceramic, Glass, Metal, Plastics

Application Method: Brush, Dip Coating, Spray

Technical Data Sheet
Enhanced TDS

Enhanced TDS

Knowde-enriched technical product data sheet

Identification & Functionality

Features & Benefits

Labeling Claims
Ready-to-Use Product Features
  • Industrial-strength surface protection from humidity, moisture, tropical weather, direct spills
  • Truly nano, invisible & non-conductive suitable for any electronics assembly, traceable or untraceable
  • Strong adhesion to flexible circuits and PCBA components without affecting flexibility
  • Universally adheres to virtually any plastic, glass, metal, ceramic surfaces and dries in seconds
  • Non-Flammable - low transportation and maintenance costs, high ROI.
  • Traceable / Untraceable in UV, supplied in various concentrations, viscosity, thickness and packaging, easy-to-apply by dipping, brushing, dripping, squirting or spraying
  • Wide application in automotive, avionics, boating, consumer electronics, defense, LED, street lighting, medical, naval, PCB, solar, SMT, OEM manufacturing

Applications & Uses

Application Area
Application Method
Compatible Substrates & Surfaces
5-Step Self-curing Workflow

Step 1 - Sweep (Optional)

Establish clean surface area for protection - blow out dust, de-grease using STIRRI-SWEEPTM or an IPA cleaning solution. Cleaning the surface also helps to avoid bubbles.

Step 2 - Screen (Optional)

Tape/mask sensors, lenses, microphones, cavities, jacks and parts that would rather not be coated - not required if connectors can pierce through the coating to establish the link.

Step 3 - Sink/Spray/Spread/Spin

Dip into a bath preventing excessive evaporation, rotate manually or using an automated system. Adjust speed as necessary for cosmetic preference - higher speeds may lead to bubbling. Use QC-AidTM traceable coating to detect voided areas. Spray or brush onto surface or use drip and spin method to distribute the evenly the coating.

Step 4 - Dry(Optional)

HYDRACOAT dries in less than a minute and is safe to touch in only about 8 seconds. Fast-track curing in 60oC chamber for 10 minutes. Auto-cures at room temperature in 24h - no heating required.

Step 5 - Unscreen (Optional)

Remove tape and masks for a final look.


Typical Properties
ValueUnitsTest Method / Conditions
Concentration (in fluoro-solvent)0.2- 10%-
Film Thickness0.1 - 0.6μm-
Boiling Point80.0°C-
Viscosity (2% Polymer)approx. 0.82cP-
Viscosity (4% Polymer)approx. 1.85cP-
Film Properties
ValueUnitsTest Method / Conditions
Contact Angle to Waterapprox. 115Degree-
Contact Angle in Oilmin. 55Degree-
Surface Tension8 - 12dynes/cm
Full Cure (at Room Temperature)24.0h-
Full Cure (at 60°C)10.0min-
Heat Stability-Continuous150.0°C-
Max Heat Stability 1 hour250.0°C-
Refractive Index Surfaceapprox. 1.34--
Electrical resistanceYes--
Solder-through RepairableYes--
Dielectric Constant (at 30%RH, 1kHz)3.0--

Technical Details & Test Data

Concentration vs Thickness
2% Polymer ~ 0.1μm layer
4% Polymer ~ 0.5μm layer
10% Polymer ~ 1.0μm layer
Electrical Properties
Coating Film Thickness Surface Resistance

Volume Resistance (Ωm)

0.1 μm film Mayconduct if penetrated* 4 x 10²⁰
0.5 μm film 1 x 10⁹ 8 x 10²⁰
1 μm film 5 x 10¹¹ ND

Note: The STIRRI HYDRACOAT™ itself is electrically non- conductive and 0.1 μm coat is sufficient to protect from liquids and oils, however nano-coating does not protect from mechanical penetration like flying testing probes.

Contact Angle Analysis

2.0% Polymer concentration on glass

HYDRACOAT - Contact Angle Analysis - 1

Water contact angle: 113°

HYDRACOAT - Contact Angle Analysis - 2

Oil contact angle: 82°

Packaging & Availability

Packaging Type
Packaging Information

Available in Bottle, Droplet, Jerrycan, Jug, Pail, Drum

Storage & Handling

Shelf Life
2 years
Shelf Life

For a maximum shelf life of 2 years use controlled storage not exceeding 35°C.