Description
This siastik 6 backup pad is the 6 in version of sia’s 1/2 in thick PSA backup pad, built for random orbital sanders running a 5/16-24 threaded spindle. The larger face covers more surface per pass than the 5 in pad, and the medium edge keeps the rim flexible enough to follow gentle panel curves without leaving a hard sanding line.
Where This Siastik 6 Backup Pad Fits
Shops working larger flat panels, such as hoods, doors, and marine hull sections, reach for the 6 in pad to cover more area per pass and cut sanding time versus a 5 in pad on the same job. The medium edge profile makes it a general purpose choice across primer work, clear coat leveling, and body filler sanding where panels combine flat sections with soft transitions.
How This Siastik 6 Backup Pad Holds Up
Like the 5 in pad in the same family, this pad threads onto the spindle at 5/16-24 and takes PSA discs pressed directly onto the face, with NH construction for standard non-hole paper. The wider face means more total contact area wears with each disc change, so shops running the 6 in pad daily should inspect the pad face for glazing or edge rounding that can start to leave uneven scratch patterns.
| Spec | Detail |
|---|---|
| Diameter | 6 in |
| Thickness | 1/2 in |
| Edge profile | Medium |
| Attachment | PSA (adhesive-back disc) |
| Arbor thread | 5/16-24 |
| Country of manufacture | Switzerland |
Order this pad for sanders already set up on 6 in discs, or size down to the 5 in version for tighter panel work. Browse Chemical Concepts abrasives and sanding accessories for matching PSA discs, or see the full sia Abrasives line at sia Abrasives.
Need Help?
Need help deciding between 5 in and 6 in pad coverage for your panel size? Call (800) 220-1966 or email [email protected].
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