Dynabrade 53978 Interface Backing Pad 5 Inch Hook Loop

Product Description

The DYNABRADE 53978 is a 5-inch round interface backing pad designed for use with random orbital sanders. Interface pads sit between the sander backing plate and the abrasive disc, providing a compliant layer that allows the abrasive to conform to contoured or irregular surfaces. The face and back both use hook and loop attachment, making disc changes fast and secure. This pad is vacuum-compatible, featuring 5 vacuum holes to support dust extraction during sanding operations. It is typically installed by auto body technicians, woodworkers, and finishing trades who need consistent surface contact across non-flat workpieces.

The 53978 is suited for finishing and material removal applications where surface conformability is critical. The interface layer reduces the risk of swirl marks and uneven stock removal on curved panels, moldings, or composite surfaces. Common applications include automotive body prep, furniture finishing, and general industrial surface conditioning. The vacuum pad design supports connection to shop vac or integrated sander dust collection systems, keeping the work area cleaner and extending abrasive life.

Key Features

• 5-inch diameter round pad fits standard 5-inch random orbital sanders
• Interface construction adds compliance layer between backer and abrasive for improved surface conformability
• Hook and loop face secures abrasive discs quickly without tools
• Hook and loop back attaches directly to the sander backing plate
• 5 vacuum holes align with dust extraction ports for integrated chip and dust removal

Compatibility

Designed as an OEM-style interface backing pad compatible with random orbital sanders that accept a 5-inch hook and loop abrasive disc with a vacuum pad configuration.

Installation Notes

Power down and unplug the sander before installing or removing the interface pad. Align the vacuum holes in the interface pad with the corresponding ports on the sander backing plate and the abrasive disc to maintain dust extraction performance. Hook and loop connection does not require tools, but ensure the pad is fully seated before operating the sander. Inspect the pad periodically for wear or delamination and replace when the hook and loop face shows significant degradation.