Black Transparent Polyurethane Potting Compounds For Electronic Enclosure

High-Performance PU Potting Compound for Electronics & Harnesses                   

Product Description

BZ-6800-8-1-T is a two-component polyurethane encapsulant formulated for insulation, sealing, and protection of power supplies, waterproof connectors, plug assemblies, and wire harnesses. Its low-viscosity design ensures deep penetration and complete component coverage, delivering robust resistance to moisture, dust, and mechanical strain. This halogen-free system complies with RoHS and REACH, operating reliably from -40°C to 120°C, with water absorption ≤0.1% and dielectric strength ≥18 kV/mm for long-term stability in demanding environments.

Key Product Features

1. Weather & Moisture Resistance – Exceptional hydrophobicity with ≤0.1% water uptake after 24-hour immersion, preventing corrosion and leakage in outdoor or humid settings.
2. Electrical Reliability – High surface (≥1.0×10¹³ Ω/sq) and volume (≥1.0×10¹⁴ Ω·cm) resistivity, dielectric constant ≤6 at 50Hz, and breakdown voltage ≥18 kV/mm to avoid arcing and shorts.
3. Adhesion & Toughness – Strong bonding to aluminum, copper, plastics, and rubber (shear strength ≥3 MPa Al-Al), with elongation ≥30% and Shore D 65±10 hardness that withstands vibration and thermal cycling.
4. Process-Friendly & Fast Cure – Simple 1:4 weight ratio (A:B) suits manual or automated dispensing. Pot life of 7–15 min at 25°C; tack-free in 20–60 min, full cure in 2–3 h ambient, or 10±2 min at 60°C for high-throughput lines.
5. Regulatory Ready – Meets RoHS and REACH requirements with a halogen-free profile, supporting global compliance and greener manufacturing.

Technical Parameters 

Product Applications

1. Power Supply Enclosures: Seals and insulates industrial power supplies, LED drivers, and battery packs, protecting internal components from dust, moisture, and thermal stress.
2. Waterproof Connectors & Plugs: Enhances reliability of automotive connectors, marine plugs, and industrial interface components, ensuring IP67/IP68 protection in challenging environments.
3. Wire Harnesses & Cable Assemblies: Encapsulates terminal blocks and cable junctions, preventing wire corrosion and signal interference in aerospace, automotive, and renewable energy systems.
4. Outdoor Electronic Devices: Provides environmental protection for solar inverters, wind turbine controllers, and IoT sensors, ensuring long-term performance in extreme temperatures and weather conditions.

Directions for Use

1. Pre-potting Preparation: Calibrate scales, prepare potting tools, cleaning tools, check machine settings, check vacuum pump force, etc. 
2. Product Pre-treatment: Place product on a level surface or fixture. Remove dust, clean, degrease, and dry if necessary.
3. Accurate Proportioning: Manual operation requires precise mixing according to the specified ratio and recording. Machine potting requires calibrated ratios and first-article confirmation is recommended.
4. Mixing & Stirring: Manual operation requires thorough stirring or using electric stirrers to ensure homogeneous mixing. Machine potting requires sufficient stirring speed, adjust as needed.
5. Uniform Potting: Manual operation should be done in small, multiple batches to ensure uniformity. Machine potting should follow the programmed path for quantitative dispensing.
6. Inspection or Secondary Potting: After potting, visually inspect as needed. Perform touch-up, bubble removal, or secondary potting if required.
7. Curing: Allow the potted and inspected products to cure at room temperature or with heat assistance (recommended 60°C if needed), according to product and process requirements.
8. Final Product Confirmation: Perform visual inspection and performance testing as required by the customer.

Packing & Shipping & Storage

1. Hardener: Typically 5KG/10KG/25KG/200KG metal or plastic drums.
2. Resin: Typically 25KG/200KG metal or plastic drums.
3. Store and transport as a general chemical product.
4. Store sealed, protected from light at room temperature. Shelf life varies from 6 to 12 months depending on packaging; please refer to the expiry date on the shipping package.
5. When temperature drops to 15°C or lower, the hardener or resin should be stored in a warm place or heated before use for potting. Specific heating recommendations depend on the temperature drop; please communicate and consult with us.