Low Viscosity Silicone Potting Compound 1:1 Deep Section Waterproof for Electronic Components

Low Viscosity Silicone Potting Compound 1:1 Deep Section Waterproof for Electronic Components

This two-component addition-cure silicone potting compound features a low-viscosity, high-flowability formulation that penetrates narrow gaps and cures reliably in deep sections without voids. Supplied in a 1:1 mix ratio, it cures into a flexible grey elastomer at 50±5 Shore A that is waterproof and highly moisture resistant, providing durable protection for LED, PCB and battery electronics. With 0.76 W/m·K thermal conductivity, excellent electrical insulation and a wide -50°C to +250°C range, it seals components against moisture, humidity and thermal stress while releasing no heat or corrosive by-products.

Key Features

• Low Viscosity & High Flowability — thoroughly wets and fills fine gaps and dense component layouts
• Cures in Deep Sections — reliable through-cure even in thick or deep potting cavities, no trapped voids
• Waterproof & Moisture Resistant — tight sealing against water, humidity and damp environments (low moisture absorption 0.01-0.02%)
• Flexible 50±5 Shore A — elastic cushioning absorbs thermal expansion and mechanical stress
• Thermally Conductive 0.76 W/m·K — transfers heat away from power components for longer service life
• Excellent Electrical Insulation — dielectric strength 18-25 kV/mm, volume resistivity 1.0x10¹⁶ ohm.cm
• Low Shrinkage, No By-products — addition cure releases no heat or corrosive by-products, RoHS compliant
• Wide Temperature Range -50°C to +250°C — stable in both cold outdoor and hot operating conditions

Applications

• Deep-section potting of LED drivers and power modules
• PCB and control board waterproofing and moisture protection
• Battery pack and electronic component encapsulation
• Devices requiring gap filling and moisture-proof sealing

Supplied as Part A (grey fluid) and Part B (white fluid) in 10 KG, 20 KG and 50 KG sets with 6-month shelf life. Contact us for samples and OEM/ODM bulk pricing.

About this supplier

Shenzhen Hanast New Material Co., Ltd. is a premier high-tech enterprise and leading source manufacturer specializing in the R&D, manufacturing, and global supply of industrial silicone materials. As a strategic branch of the renowned Shenzhen Kanglibang Technology Co., Ltd., Hanast integrates over a decade of chemical adhesive expertise with a cutting-edge 40,000-square-meter modern production base (including our newly expanding Jiangmen facility) to deliver high-capacity, reliable material solutions worldwide.

We serve as a vital tier-one supplier and OEM/ODM partner for global factories, procurement managers, and engineering teams across diverse sectors, including electric vehicles (EV), battery energy storage systems (BESS), solar inverters, LED lighting, and industrial automation.

FAQ

1. Q: Will it fill deep sections and narrow gaps without voids?

A: Yes. Its low-viscosity, high-flowability formulation penetrates fine gaps and dense layouts and cures reliably in deep potting cavities, minimizing trapped voids.

2. Q: Is it waterproof and moisture resistant?

A: Yes. It seals tightly against water and humidity, with low moisture absorption of only 0.01-0.02%, making it suitable for LED, PCB and battery electronics.

3. Q: How flexible is it after curing?

A: It cures into a flexible grey elastomer at 50±5 Shore A, providing elastic cushioning that absorbs thermal expansion and mechanical stress.

4. Q: What are the mix ratio and curing conditions?

A: Use a 1:1 mix ratio by weight or volume. It cures at room temperature, and the addition-cure system releases no heat or corrosive by-products.

5. Q: Can it be used on power electronics, and do you offer samples?

A: Yes. With dielectric strength of 18-25 kV/mm, volume resistivity of 1.0x10¹⁶ ohm.cm and 0.76 W/m·K thermal conductivity, it suits a wide range of power electronics. Free samples and OEM/ODM bulk pricing are available — contact us to discuss your application.