MG Chemicals 404B-340G, Contact Cleaner With Silicone, 12 oz., Aerosol, Case of 10
MG Chemicals 404B-340G — Contact Cleaner With Silicone, 12oz Aerosol, Case of 10
Hazardous material — available in USA & Canada only. Must ship Ground.
MG Chemicals 404B-340G (SKU: 404B-340G) is a fast-drying, plastic-safe electronics contact cleaner that leaves a thin film of dry electronic-grade silicone after the solvent evaporates. The solvent system effectively dissolves oils and organic residues from electrical contacts, switches, and connectors, while the silicone residue provides dry lubrication, reduces wear and abrasion, and protects against oxidation and environmental exposure. Non-conductive and safe on many plastics. Suitable for use in food facilities as a non-food chemical (Canadian and NSF recognition letters available on request). Supplied in 12oz (340g) aerosol cans, case of 10. CARB and RoHS compliant.
Key Specifications
| Specification | Value |
|---|---|
| Part Number / SKU | 404B-340G |
| Net Weight | 340g (12 oz) |
| Packaging | Aerosol can |
| Case Quantity | 10 cans per case |
| Type | Contact cleaner with dry silicone lubricant |
| Max Service Temperature | 200°C (392°F) |
| Conductive | No — non-conductive |
| Plastic Safe | Yes — safe on many plastics |
| Evaporation Rate | Fast |
| Food Facility Use | Yes — non-food chemical (NSF/Canadian recognition available) |
| Compliance | CARB compliant, RoHS compliant |
| Shipping Restriction | Ground only — USA & Canada only |
| Brand | MG Chemicals |
Key Features
- Cleans and lubricates in one step — solvent removes oils and organic residues; silicone film provides lasting dry lubrication
- Plastic-safe — safe on many plastics; suitable for use on plastic housings, connectors, and switches
- Non-conductive — safe for use on energized electrical contacts and components
- Dry silicone residue — better for dusty environments than mineral oil alternatives; does not attract dust
- Protects against oxidation — silicone film shields contacts from moisture and environmental exposure
- 200°C max service temperature — suitable for high-temperature contact and connector applications
- CARB & RoHS compliant — meets California Air Resources Board VOC requirements and RoHS environmental standards
Frequently Asked Questions
What is the difference between 404B and standard contact cleaner (no silicone)?
Standard contact cleaners (like MG Chemicals 403B) clean and evaporate completely, leaving no residue. The 404B adds a dry electronic-grade silicone film after the solvent evaporates, which provides ongoing lubrication, reduces contact wear, and protects against oxidation. Use 404B when lubrication and long-term protection are needed in addition to cleaning — for example, on sliding contacts, potentiometers, switches, and connectors subject to repeated mechanical wear.
Is 404B safe on plastics?
Yes — the 404B is formulated to be safe on many plastics. However, not all plastics are compatible with all solvents. Test on an inconspicuous area before full application, particularly on polystyrene, polycarbonate, or painted surfaces that may be sensitive to solvent exposure.
Can 404B be used in food processing facilities?
Yes — the 404B is suitable for use in food facilities as a non-food chemical. Canadian and NSF recognition letters are available on request. Contact MTE Solutions for documentation.
Why does 404B have to ship Ground only?
The 404B aerosol contains flammable propellant and is classified as a hazardous material, requiring ground-only shipment within the USA and Canada. It cannot be shipped by air or internationally.
Does the silicone residue attract dust?
No — the 404B leaves a dry silicone film, not an oily residue. Dry silicone does not attract dust the way mineral oil or wet lubricants do, making it preferable for dusty industrial environments where oily residues would cause contamination buildup on contacts and components.
