Loctite HY 4090 Structural Bonding Universal Hybrid Adhesive 50g Dual Cartridge HY-4090-050G/LOCTITELOCTITE HY 4090 is an off white to light yellow, high viscosity, 2 part hybrid, universal structural bonder with high humidity and vibration resistance. LOCTITE HY 4090 is a high viscosity, off white to light yellow gel. It opens completely new application areas in structural bonding for the very first time combining instant adhesive properties with those for epoxies to give more striking benefits. Fixture time of 90 180 seconds and suitable for gaps