LORD 521 Acrylic Structural Adhesive, Half Pint

Description

LORD 521 is a room-temperature curing acrylic Structural adhesive used with LORD Accelerator 19 for bonding prepared metals and plastics. The material is a medium-viscosity choice with a long working time, which helps when parts need careful alignment, larger bond areas, or staged fixture placement before the adhesive begins to build strength.

Where this Structural adhesive is used

Use LORD 521 on assemblies that need a durable bond but cannot be rushed into position. The long working window is useful for metal brackets, plastic housings, composite details, panels, trim, and mixed-material parts where the operator needs time to wet the bond area and seat the parts without squeezing out the adhesive. It is also a practical option when one substrate requires abrasion or solvent wipe before bonding.

How this Structural adhesive is applied

Bond quality starts with clean surfaces. Remove grease, oil, mold release, loose paint, and shop dust before applying the adhesive system. Thermoset plastics may need light abrasion. Metals may be abraded, solvent wiped, primed, or chemically prepared depending on the service requirement. The adhesive and accelerator should be matched as a system, then applied at a controlled bondline so the joint cures evenly. Because LORD 521 is a slow-cure system, fixture plans should account for its longer build of handling strength.

Structural adhesive specifications

Choose this product when open time and careful fit-up matter more than rapid fixture. For related options, browse structural adhesives. For manufacturer background on LORD adhesive systems, visit Parker.

Need Help?

Need help choosing surface prep or matching the accelerator to the adhesive? Call (800) 220-1966 or email [email protected].