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Technical Product Information |  |
| DOWSIL™ 3-1953 Conformal Coating Clear 3.6 KG |
| Product Overview |
| DOWSIL™ 3-1953 Conformal Coating Clear is a 1-part, solventless, RTV elastomeric silicone conformal coating engineered to protect delicate printed circuit boards (PCBs) and electronic modules from moisture, dust, corrosion, and thermal stress. Containing zero added solvents for low VOC emissions, it supports sustainable manufacturing and environmental compliance. Recognized with a UL 94 V-0 flame rating, it cures rapidly at room temperature upon exposure to atmospheric moisture. Integrated with a UV indicator, it allows automated or manual inspection under blacklight. The 3.6 kg pail/gallon package provides an ideal quantity for medium-scale selective coating, dipping, and spraying operations. |
| Key Features and Benefits |
| • Solventless Formulation: Free of flammable solvents and VOCs, promoting environmental safety and regulatory compliance. • UL 94 V-0 Flame Rating: Recognized flame-retardant performance for safety-critical electrical assemblies. • Fast Room Temperature Cure: RTV moisture-cure system offers rapid tack-free time without requiring thermal ovens. • UV Indicator: Fluoresces under UV light for effortless automated optical inspection (AOI) of coating coverage. • Elastomeric Stress Relief: Soft, flexible rubber matrix absorbs thermal expansion stress and mechanical shock. • Convenient Gallon Size (3.6 KG): Perfect package size for selective coating equipment, dip tanks, and batch dispensing. |
| Technical Specifications |
| • Appearance / Color: Clear / Transparent (UV fluorescing) • Packaging / Net Weight: Gallon / Pail / 3.6 KG • Chemical Base: 1-Part Solventless Silicone (RTV Moisture Cure) • Viscosity (@ 25°C): ~350 mPa.s • Tack-Free Time: ~5-10 Minutes • Hardness (Shore A): ~25-35 • Service Temperature Range: -45°C to +200°C (-49°F to +392°F) |
| Applications |
| • Conformal coating of automotive electronics, ECUs, sensors, and body control units. • Moisture-proofing for industrial controls, inverters, power supplies, and automation modules. • Protection of outdoor LED lighting drivers, display boards, and telecommunication circuitry. • Any electronic assembly requiring a solventless, UL 94 V-0 certified moisture barrier. |
Usage Note: Substrates should be thoroughly cleaned and dried prior to application. Being a 1-part product, no mixing is required; it is fully compatible with selective coating robots, dip tanks, and air atomized spray guns. Protect open containers from prolonged exposure to atmospheric humidity to prevent premature curing.
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