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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422C-55MLCA 422C compliant silicone coating 55ml bottle

Product ID: 638552699

Details

Brand
MG Chemicals
Item form
Liquid
Material
Silicone
Special features
Fluoresces for

🔥Max service temp 200°C

🔦Fluoresces under UV-A light

⏱️Ready to handle in 10 mins

₩105260

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Description

🛡️ Protect your tech like a pro—fast, flexible, and future-ready!

ROBOTIC READY 🤖 - Validated for selective robotic coating, streamlining industrial automation.
UV GLOW SECURITY 🔦 - Fluoresces under UV-A light for easy inspection and quality assurance.
THERMAL TOUGHNESS 🔥 - Withstands extreme heat up to 200°C, ensuring your electronics stay safe under pressure.
ALL ROUND DEFENSE 🛡️ - Shields against moisture, corrosion, dust, thermal shock, short circuits, and static discharge.
FAST TRACK PROTECTION ⏱️ - Dries quickly and can be handled in just 10 minutes—perfect for fast-paced workflows.

MG Chemicals 422C Silicone Conformal Coating is a high-performance, acrylic-silicone blend designed to protect sensitive electronics from moisture, corrosion, dust, thermal shock, and electrical hazards. It cures to a flexible, durable finish that withstands temperatures up to 200°C, is quick to handle in just 10 minutes, and fluoresces under UV-A light for easy inspection. Ideal for industrial and manufacturing environments, it supports robotic application and allows for easy repair or rework.

Specifications

ASIN	B085G42TGS
Best Sellers Rank	#50,627 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #137 in Silicone Sealers
Brand Name	MG Chemicals
Color	clear" or "transparent
Compatible Material	Metals, Plastics, Ceramics
Container Type	Bottle
Country Of Origin	USA
Customer Reviews	4.7 4.7 out of 5 stars (1,039)
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
Manufacturer	MG Chemicals
Material Type	Silicone
Model	422C-55MLCA
Number of Packs	1
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
Specific Uses For Product	Industrial applications, high temperature environments, high humidity environments, corrosive environments
UPC	779008422069
Unit Count	55 Milliliters
Volume	55 Milliliters
Water Resistance Level	Waterproof

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₩105260

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered 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 Korea.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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