Polyurethane sealant is a highly elastic, two-component, fast-curing sealant specifically developed for the production of insulating glass units (IGUs). It provides excellent mechanical performance, strong adhesion, and long-term durability, making it an ideal secondary sealing solution for modern insulating glass systems.

Characteristics
Color:Base Component (A): Transparent
Catalyst (B): Black
Packaging:220 L drums with liquid or paste catalyst
200 L base component and 20 L catalyst (liquid or paste)
Shelf Life:6 months for both Component A and Component B
Store in cool, dry conditions between +10°C and +30°C
Moisture Vapor Transmission Rate:According to EN 1279-4C: 3.4 g/(m²·24 h) with a 2 mm film thickness
Working Time Before Curing:25–50 minutes at 23°C
Advantages
Excellent adhesion to all types of glass
Strong bonding to aluminum and galvanized steel spacer frames
Compatible with galvanized steel, plastic corner keys, and Warm Edge spacer systems
Solvent-free formulation
Fully compatible with primary butyl sealants
Compatible with most sealants and silicone systems used in IGU production
Excellent elasticity under both compression and tensile stress
Very low water vapor permeability
Easy application on both manual and fully automated production lines
High productivity and processing efficiency
Suitable for all standard insulating glass unit configurations
Applications
Polyurethane sealants are widely used as a secondary seal in insulating glass units, providing excellent structural integrity, weather resistance, and long-term durability. Their versatility and compatibility with modern spacer technologies make them suitable for residential, commercial, and architectural glazing applications requiring reliable thermal insulation performance.