MG Chemicals 422C-340G Silicone Conformal Coating, 340g Aerosol, Case of 12
MG Chemicals 422C-340G Silicone Conformal Coating, 340g Aerosol, Case of 12
MG Chemicals 422C is a 1-part acrylic-silicone blend conformal coating spray that cures to a durable, flexible, and smooth finish. Easy to apply and handleable in just 10 minutes, it puts minimum stress on components during thermal cycling — making it ideal for wide temperature range applications. Fluoresces under UV-A light for easy inspection verification.
Key Specifications
| Specification | Value |
|---|---|
| Part Number | 422C-340G |
| Type | Acrylic-silicone blend (1-part), aerosol |
| Net Weight | 340 g |
| Net Volume | 406 mL |
| Packaging | Aerosol, Case of 12 |
| Handle Time | ~10 minutes |
| Max Service Temperature | 200°C |
| UV Fluorescence | Yes — fluoresces under UV-A light |
| Flame Rating | UL94 V-0 (File# E203094) |
| Removable | Yes — with MG 8309 or 8310A stripper, or solder-through rework |
Key Features
- UL94 V-0 Certified — File# E203094
- Convenient aerosol packaging — no mixing or equipment required
- High service temperature — rated to 200°C continuous
- UV fluorescent — fluoresces under UV-A light for inspection verification
- Excellent corrosion resistance — protects against moisture, fungus, dirt, dust, thermal shock, short circuits, high-voltage arcing, and static discharge
- Reworkable — removable with MG 8309/8310A strippers or solder-through repair
Ideal Applications
- PCB moisture and corrosion protection in electronics manufacturing
- Wide temperature range environments requiring flexible coating
- FPV (first-person view) electronics — drones, remote-control vehicles
- Remote and outdoor electronic systems requiring waterproofing
- Applications requiring UL94 V-0 flame-rated conformal coating
Frequently Asked Questions
What is the difference between 422C and 422B?
422C is the aerosol version of the 422B silicone-modified conformal coating — same chemistry and protection level, but in a convenient spray can format. 422B is available in bulk liquid form (1 gallon) for brush, dip, or robotic application. 422C is ideal for low-to-medium volume or field application.
Does 422C fluoresce under UV light?
Yes — 422C fluoresces under UV-A light, making it easy to verify coverage and inspect for missed areas during production or repair.
How do I remove 422C if rework is needed?
422C can be removed with MG Chemicals 8309 conformal coating remover (liquid) or 8310A remover gel. It can also be soldered through for component-level repair without full removal.
Is 422C suitable for outdoor or waterproofing applications?
Yes — 422C is an excellent choice for waterproofing FPV electronics, drones, remote-control systems, and other electronics exposed to moisture, humidity, or outdoor environments.
What does UL94 V-0 mean for a conformal coating?
UL94 V-0 is the highest flame resistance rating for plastic materials. A V-0 rated coating self-extinguishes within 10 seconds after a flame is removed and produces no flaming drips — an important safety requirement for many electronics applications.
