---
product_id: 679491210
title: "422B-340G Silicone Conformal Coating, Clear,12 oz Aerosol"
brand: "mg chemicals"
price: "645.94 DT"
currency: TND
in_stock: true
reviews_count: 5
category: "Mg Chemicals"
url: https://www.desertcart.tn/products/679491210-422b-340g-silicone-conformal-coating-clear-12-oz-aerosol
store_origin: TN
region: Tunisia
---

# Max temp 200°C UV-A fluorescent for inspection UL 94 V-0 certified flame retardant 422B-340G Silicone Conformal Coating, Clear,12 oz Aerosol

**Brand:** mg chemicals
**Price:** 645.94 DT
**Availability:** ✅ In Stock

## Summary

> 🛡️ Protect your circuits like a pro—because your tech deserves the best!

## Quick Answers

- **What is this?** 422B-340G Silicone Conformal Coating, Clear,12 oz Aerosol by mg chemicals
- **How much does it cost?** 645.94 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/679491210-422b-340g-silicone-conformal-coating-clear-12-oz-aerosol)

## Best For

- mg chemicals enthusiasts

## Why This Product

- Trusted mg chemicals brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Corrosion-Proof Armor:** Salt spray tested to prevent oxidation and extend device lifespan.
- • **Heat-Resistant Shield:** Withstands extreme temps up to 200°C, perfect for high-performance electronics.
- • **Certified Safety Standard:** UL 94 V-0 rating ensures top-tier flame retardance for peace of mind.
- • **Effortless Rework & Repair:** Solder through or strip easily with MG Chemicals’ dedicated removers.
- • **Fluorescent Inspection Ready:** Glows under UV-A light for quick, foolproof quality checks.

## Overview

MG Chemicals 422B-340G is a clear silicone conformal coating aerosol designed to protect electronic components from moisture, corrosion, and thermal shock. Certified UL 94 V-0 flame retardant and heat resistant up to 200°C, it fluoresces under UV-A light for easy inspection. Ideal for robotic application, it offers excellent corrosion resistance and allows easy rework or removal, making it a must-have for professional-grade electronics protection.

## Description

Ideal for high temperature environments. Silicone Conformal Coating (422B) is a flexible finish product that provides a protective coating for printed circuit boards against moisture, corrosion, and thermal shock. It protects and insulates electrical and electronic components and assemblies, including generators, motors, transformers, relays, and solenoid coils. For spraying, liquid can be thinned using M.G. Thinner Cleaner. Thin up to one half part thinner to one part coating. Best results will be obtained by applying to thoroughly cleaned and dried parts or materials. It is essential that surfaces be free of any trace of grease or organic substances. At room temperature, the product will tack free in approximately 5-7 minutes, and full cure will be achieved in approximately 48 hours. Curing may be accelerated by applying moderate heat with either a convection oven or infrared lamps. We recommend curing in a convection oven at 65 degree C for one hour, but other temperature and time combinations can work well. Heat curing will improve the physical strength of this coating. ROHS Compliant.

Review: Works as expected - Works great. Easy to apply dried nice and hard
Review: Why buy the jar version? This can is only 1/10th the cost per mL! Spend that saved money on a can of acrylic too! - I love silicone conformal coating. I put that **it on everything. I frequently use it to protect electronics I use unprotected, they're just exposed circuit boards, so there is a good possibility of me shorting something out unless I coat them (or put them in a case, but I'm often not ready for that yet). I generally try to buy the stuff with a brush that comes in a glass jar but the price on desertcart has been unrealistically high at currently $35 but was ~$39+ for months not long ago. Prior to that it was $15 which is still pretty expensive for diluted silicone. But people are willing to pay that much according to the sales rank of the item, so I don't expect much of a drop anytime soon. Soooo.....55ml jar for $35 or 425mL can for $25.88, guess which one I'll choose. Still have the old jars so spray it in and there you go, drops from $0.63 per mL to $0.06 per mL... 10 TIMES LESS and the added benefit of using it as a spray if you want, say on the back of a board. I didn't check the savings with the 945mL container, if there is any. I love MG Chemicals and their products. Must have one of everything on hand at all times, just in case. Silver conductive epoxy gets expensive though.

## Features

- Certified UL 94 V-0 (File# E203094)
- Maximum constant service temperature of 200 °C [392 °F]
- Fluoresces under UV-A light (blacklight)
- Validated for selective robotic coating equipment including PVA and Nordson ASYMTEK
- Excellent corrosion resistance—tested in salt spray environment with no oxidation or coating damage
- Easy rework and repairs: Solder through the coating or remove with MG Cat. No. 8309 Liquid or 8310A Gel stripper formulations

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008O9YGQI |
| Best Sellers Rank | #99,247 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #223 in Solder, Solder Fluxes & Pastes |
| Brand | MG Chemicals |
| Brand Name | MG Chemicals |
| Color | Clear |
| Colour | Clear |
| Container Type | aerosol |
| Customer Reviews | 4.7 out of 5 stars 331 Reviews |
| Full Cure Time | 48 Hours |
| Global Trade Identification Number | 00779008422236 |
| Included Components | Xylene, acetone, ethylbenzene |
| Is Waterproof | True |
| Item Form | Aerosol |
| Item Volume | 14 Fluid Ounces |
| Item Weight | 340 Grams |
| Item volume | 14 Fluid Ounces |
| Manufacturer | MG Chemicals |
| Model Name | Aerosol |
| Model Number | 422B-340G |
| Paint Type | Silicone |
| Part Number | 422B-340G |
| Size | 340 gram Aerosol |
| Special Features | Fluorescent |
| Special features | Fluorescent |
| UPC | 779008422298 779008422236 |
| Unit Count | 1 Count |
| Unit count | 1 Count |

## Product Details

- **Brand:** MG Chemicals
- **Color:** Clear
- **Global Trade Identification Number:** 00779008422236
- **Item Form:** Spray
- **Item Volume:** 14 Fluid Ounces
- **Model Name:** Aerosol
- **Package Information:** Can
- **Size:** 12 Ounce (Pack of 1)
- **UPC:** 779008422298 779008422236
- **Unit Count:** 12.0 Ounce

## Images

![422B-340G Silicone Conformal Coating, Clear,12 oz Aerosol - Image 1](https://m.media-amazon.com/images/I/51Xh1D68uSL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as expected
*by C***R on 24 July 2025*

Works great. Easy to apply dried nice and hard

### ⭐⭐⭐⭐⭐ Why buy the jar version? This can is only 1/10th the cost per mL! Spend that saved money on a can of acrylic too!
*by J***R on 26 March 2018*

I love silicone conformal coating. I put that **it on everything. I frequently use it to protect electronics I use unprotected, they're just exposed circuit boards, so there is a good possibility of me shorting something out unless I coat them (or put them in a case, but I'm often not ready for that yet). I generally try to buy the stuff with a brush that comes in a glass jar but the price on Amazon has been unrealistically high at currently $35 but was ~$39+ for months not long ago. Prior to that it was $15 which is still pretty expensive for diluted silicone. But people are willing to pay that much according to the sales rank of the item, so I don't expect much of a drop anytime soon. Soooo.....55ml jar for $35 or 425mL can for $25.88, guess which one I'll choose. Still have the old jars so spray it in and there you go, drops from $0.63 per mL to $0.06 per mL... 10 TIMES LESS and the added benefit of using it as a spray if you want, say on the back of a board. I didn't check the savings with the 945mL container, if there is any. I love MG Chemicals and their products. Must have one of everything on hand at all times, just in case. Silver conductive epoxy gets expensive though.

### ⭐⭐⭐⭐⭐ Great product
*by F***S on 28 November 2025*

I was able to coat my fans control board in my van conversion with this. I have had no condensation issues at all.

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-24*