Description
EN1556 potting compound is a black two-part polyurethane resin system for casting, molding, potting, and encapsulating electrical assemblies. The 5 gallon kit format suits higher volume electronics, cable, pump, and conveyor protection work.
EN1556 potting compound Benefits
- Polyether-based polyurethane chemistry cures into a protective elastomer for electronic parts.
- Room temperature or elevated temperature cure options let process teams match the shop setup.
- Black color helps hide protected components and creates a consistent finished appearance.
- Resistance to water, gasoline, oils, abrasion, and corrosion supports demanding assemblies.
- MBOCA-free formulation gives buyers a modern option within the CONATHANE product family.
This material fits production teams that need a flexible urethane encapsulant rather than a rigid epoxy. Use it when components need protection from moisture, vibration, handling, and chemical exposure while still allowing a controlled pour or injection process.
Where EN1556 potting compound Fits
- Connectors, printed circuit boards, and cable breakouts.
- Cable end seals and electrical assemblies exposed to moisture.
- Pumps, conveyors, and industrial electronic modules.
- Casting and molding work that needs a black polyurethane system.
- LED, government, aerospace, and general manufacturing encapsulation jobs.
Surface Preparation and Use
Clean housings, wires, boards, and metal surfaces before mixing. Remove oil, dust, moisture, and loose debris that can interfere with wet-out or adhesion.
Mix Part A and Part B until homogeneous, then degas when hand mixing if the application requires void control. Preheating components can lower viscosity, but temperature changes should be tested before production use.
Technical Details and Documentation
Published CONATHANE EN-1556 data lists a 3:1 mix ratio by volume, initial mixed viscosity near 10,040 cP at 25 C, and work life of about 60 to 70 minutes for a 2 lb mass at 25 C. Review current product information from ELANTAS before qualifying a potting process.
Ordering Help
For related urethane and silicone encapsulation materials, browse Chemical Concepts encapsulants and potting compounds. For help with kit size, cure schedule, or material changeover, call (800) 220-1966 or email [email protected].







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