Viscous epoxy gel designed for bonding surface mounted devices to printed circuit boards prior to wave soldering. LOCTITE® 3609 is a dark red, viscous epoxy gel designed for bonding surface mounted devices to printed circuit boards prior to wave soldering. It is particularly suitable for applications where medium to high dispense speeds, high dot profile, high wet strength and good electrical characteristics are required. Particularly suitable for applications where medium to high dispense speeds, high dot profile, high wet strength and good electrical characteristics are required Designed for bonding surface mounted devices to printed circuit boards prior to wave soldering One component - requires no mixing Can be used in lead free wave solder with both water-based and alcohol-based fluxes