Eucolastic 1NS

EUCOLASTIC 1NS is a single-component, non-sag, low-modulus, moisture-cure, polyurethane hybrid joint sealant. Eucolastic 1NS is formulated with a unique silane-terminated polyurethane polymer, that provides unequaled performance against stand-alone polyurethane sealants. Eucolastic 1NS is an extremely durable sealant in dynamic joints, offering persistent adhesion once fully cured.


  • Skins rapidly and is tack-free in 3 to 4 hours @ 75º F (24° C)
  • Remains adhesively and cohesively bonded during temperature cyclic movement
  • Extraordinary movement capability of +/- 35%
  • Can be painted


  • Concrete control & expansion joints
  • Precast concrete panels
  • EIFS
  • Window & door perimeters
  • Masonry
  • Interior and exterior applications
  • Above and below grade


  • ASTM C 920 Type S, Grade NS, Class 35, Use NT, M, A and O
  • U.S. Federal Specification TT-S-00230C Class A, Type II
  • ASTM C 1248
  • CAN/CGSB 19.13-M87


EUCOLASTIC 1NS is available in 10.1 oz. (300 ml) cartridges (30 per case)

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