PCB Protective Coating 100ml – Waterproof Clear Circuit Sealant

PCB Protective Coating – Waterproof, Quick-Dry Circuit Board Sealant with Brush

Keep your electronics running at their best with this 100ml Transparent PCB Protective Coating. Designed for hobbyists, technicians, and electronics enthusiasts alike, this clear epoxy-based conformal coating seals, insulates, and shields circuit boards from moisture, humidity, and environmental exposure — all with a fast-drying, brush-on formula that flows effortlessly into tight spaces.

Key Features

• Quick-Dry Formula: Achieves a tack-free surface rapidly, minimising downtime during urgent repairs and keeping your workflow moving. Full cure typically completes within 24 hours.
• Crystal-Clear Finish: The transparent coating preserves component markings and board visibility, so you can inspect and service your circuit boards with ease even after application.
• Triple Protection: Delivers electrical insulation plus water-resistant and moisture-resistant properties — ideal for boards used in humid or demanding environments.
• Flows Into Complex Layouts: The low-viscosity formula seeps into narrow crevices and conforms to intricate board configurations, ensuring thorough coverage of every critical component.
• Fine-Tip Applicator Brush Included: The precision brush applicator gives you controlled, targeted application, reducing spillage and waste — perfect for small repairs and detailed maintenance work.
• Versatile Use: Suitable for circuit boards, LED lights, terminals, connectors, and other sensitive electronics. Works as a conformal coating, potting sealant, and insulating overcoat.

Specifications

What's in the Box

• 1 × PCB Protective Coating (100ml bottle with brush)

Usage Notes

• Keep the bottle tightly sealed between uses to prevent premature curing.
• Dispense only the amount needed and reseal the packaging promptly.
• A small surface crust on the seal after long-term storage is normal — simply remove it; the product inside remains unaffected.
• Minor thickening during storage is normal; thicker consistency will require a longer cure time (up to 24 hours).
• Slight colour variation may occur due to lighting and display settings.

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Frequently Asked Questions

Q: What surfaces is this PCB protective coating compatible with?

A: This clear conformal coating is primarily designed for use on printed circuit boards (PCBs), but it also works on plastic housings, LED components, electronic terminals, and connectors. It bonds well to most common electronic substrate materials.

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

A: The coating becomes tack-free relatively quickly, but full cure typically takes up to 24 hours. Thicker applications or cooler temperatures may extend the curing time slightly.

Q: Can I use this coating in humid or outdoor environments?

A: Yes. The waterproof and moisture-resistant properties of this conformal coating make it well suited for circuit boards exposed to humidity, condensation, or light environmental exposure, helping to maintain reliable electrical insulation over time.

Q: How do I apply this PCB sealant accurately without making a mess?

A: The included fine-tip applicator brush gives you precise control over placement. Apply in thin, even coats and allow each layer to dry before adding another. Work in a well-ventilated area and keep the bottle sealed when not in use to prevent the coating from thickening prematurely.