DOWSIL™ 1-2577 Low VOC Conformal Coating is a one-part, solvent-based, RTV (Room Temperature Vulcanizing) silicone coating designed to protect printed circuit boards (PCBs) and other electronic components. It is engineered to offer low volatile organic compound (VOC) content, making it suitable for use in regulated or environmentally sensitive manufacturing environments.
The coating cures with atmospheric moisture to form a clear, elastoplastic, abrasion-resistant film that is durable under harsh operating conditions. It contains a UV-traceable dye to facilitate inspection.
Product Overview
Type: Silicone-based conformal coating
Cure System: Moisture cure (RTV)
Appearance: Clear coating with UV indicator
Form: Flowable liquid
Solvent-based: Yes, with low VOCs
Flammability: Flammable (due to solvent content)
Packaging: Available in pails and drums
Shelf Life: 36 months (in original unopened packaging at ?25°C)
Key Features
Low VOC content – Compliant with global environmental regulations
Fast room temperature cure – Tack-free in ~6 minutes
UV fluorescent indicator – Aids automated inspection
High dielectric strength – Protects against electrical leakage
Abrasion and moisture resistant – Ideal for challenging environments
Adheres to a wide range of substrates – Including metals and solder masks
Meets global standards – MIL-I-46058C, IPC-CC-830, UL 94 V-0 flame rating
Applications
Printed Circuit Boards (PCBs)
Automotive electronics (ECUs, sensors, lighting systems)
Aerospace systems
Industrial controls and automation
Consumer electronics
LED modules and power supplies
Solar panel electronics
Handling & Safety
Safe Use Guidelines
Apply in well-ventilated areas; avoid inhaling vapors.
Product is flammable before cure — keep away from heat, sparks, and flames.
Ensure solvent flash-off before heating to avoid bubble formation or fire hazards.
Use personal protective equipment (PPE): gloves, goggles, and appropriate respirators if needed.
Storage
Store in cool, dry conditions (preferably below 25°C)
Keep container tightly closed and avoid moisture exposure before use
Shelf life: up to 36 months from manufacturing date in unopened packaging
Disposal
Follow local environmental regulations for solvent-containing waste
Dispose of containers properly; do not reuse for food or drink storage
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