MG Chemicals 422C-340G Silicone Conformal Coating, 340g Aerosol, Case of 12
MG Chemicals 422C-340G — Silicone Conformal Coating | 340g Aerosol | Case of 12 | UL94 V-0
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. Sold as a case of 12 × 340g aerosol cans.
Part Number: 422C-340G | Type: Acrylic-Silicone Blend | Format: 340g Aerosol | Case of 12 | UL94 V-0 | UV Fluorescent.
Specifications
| Part Number | 422C-340G |
| Type | Acrylic-silicone blend (1-part), aerosol |
| Net Weight | 340 g per can |
| Net Volume | 406 mL per can |
| Packaging | Case of 12 aerosol cans |
| 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 |
| Manufacturer | MG Chemicals |
Key Features
- UL94 V-0 certified — File# E203094; self-extinguishes within 10 seconds, no flaming drips
- Convenient aerosol packaging — no mixing or equipment required; ready to spray
- 200°C max service temperature — suitable for wide thermal cycling and high-temp environments
- UV fluorescent — fluoresces under UV-A light for post-application inspection and coverage verification
- Excellent corrosion and moisture 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 without full coating removal
Industries & Applications
- Electronics manufacturing — PCB moisture and corrosion protection
- Wide temperature range environments — automotive, industrial, and outdoor electronics
- FPV/drone electronics — waterproofing for remote-control vehicles and drones
- Remote and outdoor electronic systems requiring moisture protection
- 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 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.
