





🛡️ Protect your circuits like a pro—clear, tough, and inspection-ready!
The 422B-340G Silicone Conformal Coating is a clear, 12 oz aerosol designed for high-performance electronic protection. Certified UL 94 V-0 flame retardant and heat resistant up to 200°C, it fluoresces under UV-A light for easy inspection. Compatible with robotic coating systems and proven corrosion resistant, it offers easy reworkability for efficient maintenance.












| ASIN | B008O9YGQI |
| ASIN | B008O9YGQI |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #86,912 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #186 in Solder, Solder Fluxes & Pastes |
| Color | Clear |
| Customer Reviews | 4.7 4.7 out of 5 stars (331) |
| Customer reviews | 4.7 4.7 out of 5 stars (331) |
| Date First Available | 15 August 2012 |
| Date First Available | 15 August 2012 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 340 g |
| Item model number | 422B-340G |
| Item model number | 422B-340G |
| Manufacturer | MG Chemicals |
| Manufacturer | MG Chemicals |
| Measurement System | US |
| Part number | 422B-340G |
| Product Dimensions | 7.87 x 7.87 x 20.57 cm; 340 g |
| Product Dimensions | 7.87 x 7.87 x 20.57 cm; 340 g |
| Size | 340 gram Aerosol |
C**R
Works great. Easy to apply dried nice and hard
J**R
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.
F**S
I was able to coat my fans control board in my van conversion with this. I have had no condensation issues at all.
C**L
I use it to protect my FPV’s and it works just fine
S**3
good value, Comes with C of C.
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