J.E. Berkowitz introduced the new JEB 3Seal™ HM+ warm-edge spacer system for insulating glass units, which enables bold and energy-efficient architectural glass solutions.
Designed to meet the toughest commercial glazing demands, the JEB 3Seal HM+ spacer features triple seal technology, including an improved secondary seal made out of high-modulus silicone, as well as a hot-applied captive polyisobutylene (PIB) primary seal and a pre-applied acrylic adhesive for spacer to glass bonding.
Gary McQueen, director of architectural sales at JEB, said the improved JEB 3Seal HM+ spacer offers significant aesthetic and energy-efficient advantages over traditional IGU spacers.
“The high-modulus silicone secondary seal minimizes PIB migration, providing clear, straight sightlines,” McQueen said. “It also offers 35 percent higher design strength, allowing for a narrower air cavity in an IGU, and 10.4 percent more argon gas retention than standard sealants, based on ASTM 2190 testing. An IGU incorporating the JEB 3Seal HM+ spacer will retain its argon gas longer over other insulating glass systems, maximizing energy savings and extending the units service life.”
While traditional metal spacers are highly conductive, the JEB 3Seal HM+ spacer is made from thermoset structural silicone with integral 3A desiccant, which allows for minimal thermal conductivity, higher edge-of-glass temperatures, and an improved condensation resistance factor.
With its T-shaped design, the JEB 3Seal HM+ spacer also offers shock-absorbing properties that counteract glazing stresses caused by wind, snow, driving rain, fluctuating temperatures, and barometric pressure.