Hawk Epoxy F1 High Load Adhesive Fiber Filler The Sea Hawk Hawk Epoxy F1 High Load Adhesive Fiber Filler is an easy to use adhesive designed to work with the Hawk Epoxy System. Ideal for bonding hardware and other applications with dissimilar materials. When used the mixture will maximize bond strength for anticipated high loads. The Sea Hawk Hawk Epoxy F1 High Load Adhesive Fiber Filler compares to 404 High Density Filler Features Thickens to a light grey color Easy to use adhesive Designed for