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Technical Product Information |  |
| DOWSIL™ 3-1953 Conformal Coating Clear 18.1 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 18.1 kg industrial pail package provides an optimal quantity for high-volume automated selective coating lines, dip tanks, and bulk spraying operations. |
| Key Features and Benefits |
| • Industrial Bulk Packaging (18.1 KG): Suited for continuous automated selective coating lines and high-volume manufacturing efficiency. • 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. |
| Technical Specifications |
| • Appearance / Color: Clear / Transparent (UV fluorescing) • Packaging / Net Weight: Pail / 18.1 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. • High-volume moisture-proofing for industrial controls, inverters, power supplies, and automation modules. • Protection of outdoor LED lighting drivers, display boards, and telecommunication circuitry. • Automated production lines 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 and supply lines from prolonged exposure to atmospheric humidity to prevent premature curing.
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