High Strength Structural Epoxy — Epo-Weld™

HSS-601 is the dedicated abrasion and impact-resistant grade — reinforced with glass fiber and Kevlar, it prevents crack propagation and resists ongoing abrasive wear. It is specifically formulated for repairing pump casings, chutes, and hoppers where surfaces are subjected to constant erosion.

Yes. HSS-604 is an aluminum-filled paste that can be machined, drilled, and tapped like metal after full cure. This makes it ideal for restoring dimensional accuracy on molds, dies, and engine castings without welding. Room-temperature cure takes 24–48 hours; oven-accelerated cure at 200°F takes 2 hours.

HSS-601 and HSS-610 both meet NASA outgassing requirements (ASTM E595), qualifying them for aerospace, satellite, and vacuum-sensitive environments where volatile material emission must be minimised.

Surfaces should be clean, dry, and free of oils, grease, and loose material. For best results on metals, abrade the surface to a rough profile using sandpaper or grit-blasting and degrease with a solvent wipe before application. The substrate should be at or above room temperature during application and cure.

HSS-601 offers a faster cure — functional in 2–4 hours at 77°F or 4 hours at 175°F. HSS-604 and HSS-610 require 24–48 hours at 77°F for room-temperature cure, or 2 hours at 200°F for an accelerated schedule. Elevated-temperature cure generally produces higher final bond strength.

Yes. HSS-610 is a ceramic-filled formulation engineered to provide a chemically resistant barrier against acids, alkalis, and solvents. It is specifically recommended for repairing valve bodies, pump housings, tank linings, and offshore equipment where long-term chemical and salt spray exposure is expected.