MG Chemicals 842AR-900ML, Super Shield Silver Conductive Paint, 850ml Can, Case of 1
MG Chemicals 842AR-900ML — Super Shield Silver Conductive Paint, 850ml Can
MG Chemicals 842AR-900ML (SKU: 842AR-900ML) is a one-part, solvent-based acrylic lacquer pigmented with highly conductive silver flake. Designed for EMI shielding of plastic enclosures, the 842AR delivers superior high-frequency shielding performance with excellent adhesion to injection-molded plastics including ABS, PVC, nylon, and polycarbonate. Smooth, hard, and abrasion resistant, it applies easily by brush or spray with quick dry time and no heat cure required. HAP-free formulation — no toluene, xylene, or MEK. Supplied in an 850ml (900ml nominal) can.
Key Specifications
| Specification | Value |
|---|---|
| Part Number / SKU | 842AR-900ML |
| Net Volume | 850 mL |
| Net Weight | 1.47 kg |
| Packaging | Can |
| Type | 1-part solvent-based acrylic lacquer |
| Pigment | Highly conductive silver flake |
| Application Method | Brush or spray |
| Cure | Air dry — no heat cure required |
| Substrate Compatibility | ABS, PVC, nylon, polycarbonate, most injection-molded plastics |
| HAP Content | HAP-free (no toluene, xylene, or MEK) |
| Corrosion Resistance | Strong |
| Marine Suitability | Yes |
| Brand | MG Chemicals |
Key Features
- Superior EMI/RFI shielding — silver flake pigment delivers the highest level of shielding performance for plastic enclosures
- Excellent plastic adhesion — bonds strongly to ABS, PVC, nylon, polycarbonate, and most injection-molded plastics
- Thin minimum layer height — suitable for post-soldering board-level shielding applications
- HAP-free — no toluene, xylene, or MEK; mild solvent system safe on polystyrenes
- Strong corrosion resistance — suitable for marine and harsh environment applications
- No heat cure — air dries quickly for fast turnaround in production and prototyping
Applications
- EMI/RFI shielding of plastic enclosures and housings
- Board-level shielding in post-soldering applications
- Prototyping and repairing electronic circuits
- Conductive undercoat for electroplating plastic
- Marine and corrosion-resistant conductive coating applications
Frequently Asked Questions
What shielding performance does 842AR provide?
The 842AR uses highly conductive silver flake pigment to deliver superior high-frequency EMI/RFI shielding. It is MG Chemicals' highest-performance conductive paint for plastic enclosure shielding. Refer to the MG Chemicals TDS for specific shielding effectiveness data (dB attenuation vs. frequency).
What plastics does 842AR adhere to?
842AR adheres strongly to most injection-molded plastics including ABS, PVC, nylon, and polycarbonate. Its mild solvent system is also safe on polystyrenes, which can be attacked by more aggressive solvent-based coatings. Surface preparation (cleaning, light abrasion) improves adhesion on all substrates.
Does 842AR require heat curing?
No — 842AR is an air-dry formulation with quick dry time. No heat cure is required, making it suitable for temperature-sensitive plastic enclosures and for production environments without curing ovens.
Is 842AR HAP-free?
Yes — 842AR does not contain toluene, xylene, or MEK (Hazardous Air Pollutants). This makes it a more environmentally compliant choice compared to older solvent-based conductive paints, and reduces VOC-related handling and ventilation requirements.
What is the difference between 842AR-900ML and other 842AR sizes?
The 842AR-900ML is the largest can format (850ml net volume, 1.47kg), suited for production-scale shielding applications. Smaller formats (150ml, 12ml jar) are available for prototyping, repair, and lower-volume use. Contact MTE Solutions for pricing and availability across all 842AR formats.
