Multi-Hole Foam Interface Pads

An interface pad sits between your backing plate and your abrasive disc and does one job well: it lets the disc follow the panel instead of fighting it. A backing plate is rigid by design, so on any curved surface the disc contacts unevenly, loads up at the edges, and leaves the deep isolated scratches that cost you an extra polishing step later. Adding a soft foam layer spreads that pressure across the full face of the disc, which is why interface pads are standard practice for sanding bumpers, mirror caps, body lines, and anything with a radius.

These are the genuine RUPES multi-hole pads in 5" and 6", each available in 7mm or 12mm thickness and sold two per pack. The holes are positioned to line up with the RUPES extraction pattern, so dust evacuation keeps working instead of being blocked by the pad you just added. They attach to any hook and loop backing plate, which means they work beyond the RUPES lineup as long as your disc and plate share the same hole layout. Pairs naturally with the RUPES LHR12E Duetto, which is built to run micro-abrasive discs over an interface pad, and with the rest of the RUPES range.

What Makes it Great:

📏 7mm or 12mm, Chosen by the Panel: Run 7mm on flatter panels where you want the disc to keep cutting and the tool to keep giving feedback. Step up to 12mm when the surface curves hard or you need the extra margin on an edge.

🛡️ Stops the Deep Isolated Scratch: Even pressure across the disc face is what prevents the single deep mark that forces you back for another correction pass.

🌀 Extraction Holes Stay Open: Multi-hole pattern aligns with the disc and plate so dust keeps pulling through rather than packing under the pad.

📦 Two Per Pack: Interface pads are a wear item. Two per pack means the spare is already on the shelf when the first one tears or loads up.

Frequently Asked Questions

Should I use the 7mm or the 12mm?

Match it to the surface. The 7mm gives light cushioning while preserving most of the tool's cut and the feedback through your hands, which suits near-flat panels, hoods, doors, and roofs. The 12mm conforms far more aggressively and is the better choice on bumpers, mirror caps, tight radii, and anywhere you want a safety margin near an edge. The trade is cutting efficiency: more foam means more float and slower material removal.

Why do I need an interface pad at all?

Because a backing plate does not bend. On a curved panel the rigid plate makes the disc contact hardest at one edge, which concentrates cut in one spot and leaves a deep scratch that has to be polished out. The foam layer distributes that load across the whole disc so material comes off evenly.

Do the holes have to line up with my sanding disc?

Yes, if you are running dust extraction. The pad sits directly in the extraction path, so its holes need to align with both the backing plate and the disc. Mismatched patterns block airflow, dust stays on the surface, and the disc loads up and stops cutting.

Will these work on non-RUPES sanders?

They attach to any hook and loop backing plate of the matching size, so mechanically yes. Whether extraction works depends entirely on whether your discs and plate use the same hole layout. Check the pattern before ordering rather than assuming.

How long does an interface pad last?

It depends on grit, pressure, and heat, not on a set number of discs. Replace it when the foam tears at the edge, delaminates, compresses permanently in one area, or when the hook and loop stops holding a disc securely. A pad that no longer grips is a disc waiting to fly off.