PCB Conformal Coating 100ml – Waterproof Circuit Board Sealant

100ml Electronic Waterproof Conformal Coating for PCB Circuit Boards

Keep your electronics protected and performing at their best with this fast-drying, transparent conformal coating. Specially formulated for PCB circuit boards, this 100ml protective sealant delivers triple-action shielding — electrical insulation, moisture resistance, and water protection — in a single, easy-to-apply bottle with a precision brush applicator.

Whether you're a hobbyist, technician, or electronics enthusiast, this conformal coating is an essential tool for extending the life of sensitive components, LED lights, terminals, and appliances. Made in Mainland China.

Key Features

• Fast-Drying Formula: Achieves a surface-dry finish quickly, minimizing downtime during repairs and keeping your workflow on track for time-sensitive projects.
• Crystal-Clear Transparent Layer: Forms a colorless protective film that preserves component markings and board visibility — inspect, service, or troubleshoot without removing the coating.
• Triple Protection: Provides electrical insulation while resisting moisture and water intrusion, making it ideal for electronics used in humid or demanding environments.
• Flows Into Complex Layouts: The low-viscosity formula seeps into narrow crevices and conforms to intricate board configurations for thorough, gap-free coverage.
• Precision Brush Applicator: The included fine-tip brush allows targeted, spill-free application — perfect for small repairs, spot treatments, and detailed assembly work.
• Versatile Use: Suitable for PCBs, LED modules, circuit terminals, sensors, connectors, and a wide range of consumer and industrial electronics.

Specifications

• Volume: 100ml
• Size: 5 × 11 cm (1.96 × 4.33 in)
• Weight: ~120g
• Finish: Transparent
• Dry Time: Approx. 24 hours (full cure; varies with coating thickness)
• Origin: Made in Mainland China

What's in the Box

• 1 × 100ml PCB Conformal Coating with brush applicator

Usage Tips

1. Clean the PCB surface thoroughly before application to remove dust, oils, and flux residue.
2. Apply an even layer using the included brush, ensuring full coverage of all exposed traces and components.
3. Allow to cure fully (approximately 24 hours). Thicker coats may require additional drying time.
4. Keep the bottle tightly sealed between uses. Any minor crusting at the cap seal is normal and can be removed — it does not affect the remaining product.

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External Resource

For guidance on safe handling of chemical coatings and sealants in workplace and DIY settings, refer to OSHA's Chemical Hazards Resources.

Frequently Asked Questions

Q: What surfaces can I apply this PCB conformal coating to?

A: This transparent conformal coating is designed primarily for printed circuit boards (PCBs) but works well on LED modules, circuit terminals, sensor housings, connectors, and other electronic assemblies that require moisture and water protection.

Q: How long does the PCB conformal coating take to fully cure?

A: The coating typically reaches a surface-dry state relatively quickly, but full curing usually takes approximately 24 hours. Thicker application layers may extend the curing time, so apply thin, even coats for the fastest results.

Q: Can I still inspect or service my board after applying this coating?

A: Yes. The coating dries to a crystal-clear, transparent finish that maintains full visibility of component markings, traces, and board identifiers, so you can inspect and service the board without removing the protective layer.

Q: How should I store this conformal coating between uses?

A: Always reseal the bottle tightly immediately after each use. Store in a cool, dry location away from direct sunlight. Minor crusting at the cap seal during long-term storage is normal — simply remove the crust before use; it does not affect the quality of the product inside.