One-part Polyurethane Joint Sealant

  • Highly resilient with excellent recovery
  • Provides permanent and uniform watertight seal
  • Excellent adhesion to most building
  • Weather resistant
  • Non-biodegradable
  • Non-toxic once cured. Can be used in potable water reservoirs and swimming pools
  • Easy to apply, no mixing required
  • Over painting can be done with dispersion based paint (acrylic, vinyl)

POLYSEAL 1PUA is a one-part low modulus high performance polyurethane sealant, which cures on adsorption of atmospheric moisture to form a firm and flexible rubber watertight seal for moderate and control joint. POLYSEAL 1PUA can be used in both horizontal and vertical applications.

Technical Specification

Density(g/cc)1.3 ± 0.05
ViscosityThixotropic Paste
Butt Joints±25
Lap Joints± 50
Shore A Hardness20-35
Adhesion to Concrete, (N)>25
Elongation, (%)>250
Chemical ResistancepH 2.5 to 11.5, sea water
Skinning time @ 25 °C & 50% RH (hrs)24
Full cure @ 25 °C & 50% RH (d)7
Application Temperature, (°C)+5 to +40
Service Temperature, (°C)40 to +80
Polyseal 1PUA