Light Cap® Rapid Coating for LED Arrays

Dymax Light Cap® 9624 is designed for rapid, room-temperature coating of LED arrays. Dymax Light Cap™ materials contain no nonreactive solvents and cure upon exposure to light. Their ability to cure in seconds enables faster processing, greater output, and lower processing costs. When cured with Dymax UV light curing spot lamps, focused beam lamps, flood lamps, or conveyor systems they deliver optimum speed and performance for maximum efficiency. Dymax lamps offer the optimum balance of UV and visible light for the fastest, deepest cures. This product is in full compliance with the RoHS2 Directives 2015/863/EU and 2011/65/EU.


Density: 1.08

Viscosity: 120 nominal

Durometer hardness: D75

Tensile at break, %: 120 [1,754]

Elongation at break, %: 0.2 [3]

Modulus of elasticity, MPa [psi]: 970 [14,286]

Refractive index (20 C): 1.52

Boiling water absorption, % (2 hr): 7.0

Water absorption, % (25 C, 24 hr): 2.2

Linear shrinkage, %: 0.8


  • Conformal coating for LED arrays
  • Colorless encapsulation of COB LEDs
  • Instant forming of protective lens for high-intensity LEDs


  • UV light cure
  • Low viscosity for thin coatings
  • Solvent free
  • Isocyanate free
  • Low VOCs

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