I have been using the 422B version of this product for years and have been completely happy with the results. How does the new 422C version compare?

Works the same and was cheaper, package included 2 brushes for applying it.

Will this make a flexible coating for headphone wires?

No, this product is for water proofing components on a board that is not exposed to regular handling or significant flexing. You need to look at heat shrink tubing or brush on insulation. Heat shrink tubing is probably the best choice depending on what you're trying to do.

Can you use this on an led light over an aquarium? is it toxic after it cures? how long does it last? do you have to keep reapplying it?

I wouldn't put it in an aquarium's water just to be safe, but if trying to stop short circuits in a wet environment- that is what it does if applied correctly and completely covering circuitry, connections etc. Water doesn't seem to degrade an application by itself, physical wear from handling can happen, but it is very durable otherwise and not needing re-coating. Use UV light to see if coverage is complete as it Floreses blue/green so can inspect.

can i paint this on a motherboard to resurface if i scratched the green coating that covers a board?

It will cover it to prevent any shorts, yes. It is conformal coating. I prefer the UV curable type, but it will work.

Mg Chemicals 422c 55mlca 422c Silicone Conformal Coating 55 Ml

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€ 72.44

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛡️ Protect your tech like a pro—because your gear deserves the best shield.

FAST FLEXIBLE - Dries to a durable, flexible finish in just 10 minutes—speed meets resilience.
AUTOMATION READY - Validated for selective robotic coating, perfect for cutting-edge manufacturing workflows.
THERMAL TOUGHNESS - Withstands extreme heat up to 200°C, ensuring your electronics stay cool under pressure.
UV GLOW ASSURANCE - Fluorescent formula guarantees full coverage, so no spot is left unprotected.
MULTI THREAT DEFENSE - Shields against moisture, corrosion, dust, static, and high-voltage arcing for all-around protection.

MG Chemicals 422C Silicone Conformal Coating is a high-performance, acrylic-silicone blend designed to protect electronics from moisture, corrosion, dust, thermal shock, and electrical hazards. It cures quickly to a flexible, durable finish, fluoresces under UV-A light for easy inspection, and supports advanced robotic application, making it ideal for professional and industrial use.

Specifications

ASIN	B085G42TGS
Best Sellers Rank	#12,830 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #40 in Silicone Sealers
Brand	MG Chemicals
Brand Name	MG Chemicals
Color	clear" or "transparent
Colour	clear" or "transparent
Compatible Material	Metals, Plastics, Ceramics
Container Type	Bottle
Customer Reviews	4.7 out of 5 stars 1,021 Reviews
Full Cure Time	24 Hours
Included Components	2 Brushes
Item Form	Liquid
Item Package Quantity	1
Item Type Name	Protective Coating
Item Weight	50.7 Grams
Item form	Liquid
Manufacturer	MG Chemicals
Material	Silicone
Material Type	Silicone
Model	422C-55MLCA
Number of Pieces	1
Other Special Features of the Product	Fluoresces under UV-A light, Validated for selective robotic coating equipment
Part Number	422C-55MLCA
Special features	Fluoresces under UV-A light, Validated for selective robotic coating equipment
Specific Uses For Product	Electronics Manufacturing, Industrial Settings
Specific uses for product	Electronics Manufacturing, Industrial Settings
UPC	779008422069
Unit Count	55 Milliliters
Volume	55 Milliliters
Water Resistance Level	Water Resistant

Reviews

M**U

Good product

It applies well and dries fast. Works better when appliying a generous coat; the end result just looks better.

10.09.2022

J**G

Easy to use

Easy to use and the additive that glows in UV light helps to ensure complete coverage. Very useful.

25.04.2026

D**D

Perfect for waterproofing rc motherboards

Simple to use and super effective!

20.03.2024

O**Y

The good stuff!

Wow! This was exactly what I needed to finish up a project that I was working on. This stuff is next to impossible to find locally anymore, and this particular brand works very well. You get what you pay for when it comes to this stuff so buy the best! Thank you Amazon for making this available!

3.05.2026

S**N

Used as painting coatings…works great

18.05.2026

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€ 72.44

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Fantastic experience overall. Will recommend to friends and family.

1 month ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.