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.

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MG Chemicals - 422C-55MLCA 422C Silicone Conformal Coating 55 mL Bottle

MG Chemicals - 422C-55MLCA 422C Silicone Conformal Coating 55 mL Bottle

Product ID: 442045494

Details

Brand
MG Chemicals
Item Form
Liquid
Material
Silicone
Special Feature
Cold Resistant

💧Water & corrosion resistant

🔥Max service temp 200°C

🔦UV-A fluorescence for easy inspection

R1596

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Description

🛡️ Elevate your electronics’ defense game with MG Chemicals 422C!

VERSATILE DURABLE - Cold & crack resistant, ideal for industrial & high-humidity environments
FAST PRECISE APPLICATION - Dries clear in just 20 minutes, compatible with robotic coating
HEAT RESISTANT PERFORMANCE - Withstands extreme temps up to 200°C without compromise
ULTIMATE ELECTRONIC SHIELD - Protects against moisture, dust, fungus, thermal shock & static discharge
FLUORESCENT INSPECTION READY - Glows under UV-A light for quick quality checks

MG Chemicals 422C Silicone Conformal Coating is a premium 55 mL protective liquid designed to shield electronics from moisture, corrosion, dust, and thermal shock. It withstands temperatures up to 200°C, fluoresces under UV-A light for easy inspection, and dries clear in 20 minutes. Perfect for industrial and high-humidity environments, it supports selective robotic application and ensures long-lasting durability.

Specifications

ASIN	B085G42TGS
Best Sellers Rank	#17,585 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #265 in Lab Supplies
Brand Name	MG Chemicals
Colour	transparent
Compatible Material	Ceramic, Metal, Plastic
Container Type	Bottle
Country of Publication	USA
Customer Reviews	4.7 4.7 out of 5 stars (1,034)
Full Cure Time	2E+1 Minutes
Included Components	2 Brushes
Item Form	Liquid
Item Package Quantity	1
Item Type Name	Protective Coating
Item Weight	50.7 Grams
Manufacturer	MG Chemicals
Manufacturer Part Number	422C-55MLCA
Material Type	Silicone
Model	422C-55MLCA
Number of Pieces	1
Other Special Features of the Product	Cold Resistant, Crack Resistant, Dries Clear, Fast Drying, Heat Resistant, Strong
Specific Uses For Product	Industrial applications, high temperature environments, high humidity environments, corrosive environments
UPC	779008422069
Unit Count	1.86 Milliliters
Viscosity Level	Medium
Volume	55 Millilitres
Water Resistance Level	Water Resistant

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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R1596

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

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