Duraseal® is an insulating glass edge seal system constructed using a unique Composite Laminating Technology. Duraseal is preassembled with proven components, sealant, spacer and desiccant to create a high performance durable spacer system.


  • Composite Laminating Technology
  • A unique patented design
  • Smooth surface appearance
  • Black or gray sightline available
  • Proven adhesive technology
  • Superior argon gas retention
  • Minimal compression required
  • Optimized packaging
  • Lower conductivity polymeric warm edge spacer
  • Improved condensation resistance
  • Airspaces of ¼” (6mm) to 13/16” (20.5mm)
For use in high volume production of dual and triple pane insulating glass units in a one step process where units are sealed using heat and compression. Duraseal is designed as a single seal system.
Performance Norm
Thermal Conductance (Klin)
0.32 W/m° C based on ½”
(13mm) spacer
Moisture Vapor Transmission
0.09 g H20/m² per 24 hrs.
ASTM F 1249
Volatile Fogging
ASTM E 2189
CGSB 12.8
Argon Permeance
6-8 c.c/100 in.² per 24 hrs.
ASTM D 1434
Bondline Adhesive UV

Dew Point Development
-20° F (-29° C) in 48 hrs
ASTM E 546
Tensile Strength
50 psi
TST 389C
Note: The foregoing information is published as general information only. The listed properties and performance characteristics are approximate value and are not part of the product specification.