Edgetherm® PIB H-1 polyisobutylene primary sealant

Edgetherm® PIB H-1 is a preferred choice as the primary seal on insulating glass units while providing the main moisture vapor seal between glass and metal spacers. It is a high-viscosity, high-strength, 100% solids sealant based on polyisobutylene polymer formulated to impart reinforcement, resist degradation from ultraviolet light and provide low moisture permeability. It must be used with a secondary seal designed to provide structural strength.

Edgetherm® PIB H-1 Sealant features:
  • High viscosity formula resists shearing in large, heavy lites of glass
  • Retains flexibility through a wide temperature range to compensate for thermal movement of the insulating glass unit
  • Available in bulk (slug form: 7.5”D x 9.5” H, 15.5 lb/7 kg) for application by various type extruders
Edgetherm PIB H-1 offers the following benefits:
  • Easy application and handling of coated spacer bars.
  • Excellent adhesion to glass and metal through a wide temperature range
  • Low moisture vapor transmission rate
  • Non-fogging (100% solids)
  • Consistent quality
  • Resists degradation from ultraviolet light and oxidation
The following information is published as general information only. The listed properties and performance characteristics are approximate value and are not part of the product specification.
Moisture Vapor Transmission Rate 0.45 g/m²/d, 0.060” fi lm, 100° F,ASTM F 1249
100% RH
Volatile Fogging PassesASTM 2189
Shear Resistance @ 2 psi, Time to displace 0.2” 28 minutes, Time to displace 1.0” 75 minutes
Weight per Gallon (Specific Gravity) Black: 9.34 lb/U.S. gal (1.12 g/cc)
Hardness (Consistency) 40 dmmASTM D 5
Edgetherm® PIB H-1 polyisobutylene primary sealant

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