Low modulus expansion joint sealant

HYPERSEAL®-25LM is a novel low modulus expansion joint sealant, especially formulated to contain both PU and silylated – PU technology, thus giving rise to a sealant which includes the best of both technologies. HYPERSEAL®-25LM cures by reaction with atmospheric humidity to produce a joint sealant with a 50% joint movement accommodation factor, which has excellent adhesion on substrates traditionally problematic for PU sealants, e.g. glass, aluminum, steel, polycarbonate, etc.. Additionally, the sealant has been modified in order to have extrusion profile identical to hybrid PU or MS technology. The extrusion rate and tooling of the sealant remain the same throughout a very wide range of temperature and humidity conditions. The sealant is easy to apply even in very low temperatures and the storage stability is unlike any polyurethane sealant in the market.

HYPERSEAL®-25LM complies with:

  • ISO-11600,
  • Type F,
  • class: 25LM,
  • DIN-18540-F,
  • ASTM C920,
  • U.S. Federal Specification TT-S-00230C,
  • Type II Class A.

Sealing joints in:

  • Insitu concrete,
  • expansion concrete joints,
  • precast panels,
  • brick and block work,
  • water tanks and swimming pools,
  • metal frames,
  • aluminum windows and panels,
  • irrigation channels,
  • glass & mirror applications,
  • granite & marble.