Fast Curing 2 Part Polyurethane Potting Compound For Filters OEM 6902-1

Fast-Curing Polyurethane Potting Compound for Filtration Systems                                                                                         

BZ-6902-1 is a high-performance two-component polyurethane encapsulant engineered for rapid sealing and structural bonding of air, oil, and high-efficiency filters. It cures fully in 2.5±0.5 hours at 25℃ (or ≤15 minutes with 60℃ heat), delivering high elongation (≥50%) and strong electrical insulation (breakdown voltage ≥20 kV/mm). This RoHS-compliant formulation offers low moisture uptake (≤0.5%) and robust adhesion to metals, plastics, and filter media, ensuring lasting reliability in tough industrial settings from -40℃ to 100℃.

Key Product Features

1. Fast Cure: Fully cures in 2.5±0.5 h at 25°C; accelerates to ≤15 min at 60°C for high-throughput production.
2. Simple Metering: 1:2 mix ratio cuts errors and waste, compatible with automated dispensers.
3. Resilient Flexibility: Shore A 65±8, elongation ≥50%, absorbs shock and accommodates thermal expansion.
4. High Dielectric Strength: Breakdown voltage ≥20 kV/mm, volume resistivity >1.0×10¹¹ Ω·cm for reliable isolation.
5. Versatile Adhesion: Forms durable, leak-tight bonds to metals, plastics, and various filter media.
6. Eco-Conscious: Fully RoHS-compliant, meeting global environmental standards.
7. Controllable Pot Life: 7±3 min at 25°C, adjustable for seasonal temperature variations.

Technical Parameters 

Product Applications

1. Air Filters: Seals automotive cabin filters, industrial HVAC filters, and cleanroom air filters, preventing air leakage and enhancing filtration efficiency.
2. Oil Filters: Bonds filter media to metal end caps in automotive and industrial oil filters, ensuring structural integrity under high-pressure conditions.
3. High-Efficiency Filters: Encapsulates HEPA and ULPA filter frames, providing airtight seals and mechanical stability in critical environments like hospitals and data centers.
4. Filter Control Electronics: Insulates sensor modules and control circuits in smart filter systems, protecting against dust, moisture, and electrical interference.
5. Industrial Filtration Systems: Seals hydraulic filters, fuel filters, and water treatment filters, withstanding exposure to harsh chemicals and temperature fluctuations.

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

1. Hardener: Typically 5KG/10KG/20KG/200KG metal or plastic drums.
2. Resin: Typically 10KG/20KG/200KG metal or plastic drums.