EXPAND-A-SLEEVE

Custom Mastic Sealant & Retainer

Expand-A-Sleeve is an ND Industries exclusive process in which customer fasteners are made self-sealing and self-retaining. Designed for use on assemblies that undergo an e-coat or paint bake process, ND’s custom formulated heat-activated mastics expand up to 1,000%, filling gaps and sealing out gas, fluid, and debris.

When press-fit into a mating unthreaded assembly, Expand-A-Sleeve fasteners will remain secure until a secondary process is complete.

Works with threaded fasteners, unthreaded pins, rivets, and more.

Heat from an e-coat or paint process causes the mastic to quickly expand, filling gaps between the fastener and mating assembly.

Expand-A-Sleeve is an ND Industries exclusive process in which customer fasteners are made self-sealing and self-retaining. Designed for use on assemblies that undergo an e-coat or paint bake process, ND’s custom formulated heat-activated mastics expand up to 1,000%, filling gaps and sealing out gas, fluid, and debris.

When press-fit into a mating unthreaded assembly, Expand-A-Sleeve fasteners will remain secure until a secondary process is complete.

Works with threaded fasteners, unthreaded pins, rivets, and more.

Tight-fitting mastic collar is retained on the fastener until the point of assembly, reducing part inventory and installation labor.

Heat from an e-coat or paint process causes the mastic to quickly expand, filling gaps between the fastener and mating assembly.