Sanding Sponge - 7983 siasponge flex - 3 ¾ x 4 ¾ x ½" by SIA Abrasives

5/5 · 5 reviews
from $7.95
Free Delivery
on orders over $90
Quebec, Ontario · More info

The 3 ¾ x 4 ¾ x ½" sanding sponge is made of aluminium oxide on a foam sponge. This sponge is usable on both sides and allows it to take on the exact shape of the wood.

Siasponge flex sanding sponge can be used for the sanding of hard, soft or veneering woods and also for the sanding of paint and varnish.

Be it curves, shapes or contours – an even and perfect sanding pattern can be achieved with 7983 siasponge flex. The extra-soft foam of siasponge flex ensures maximum conformability.


3 units · Assorted (Medium - Fine - Superfine) $7.95 In stock
10 units · Fine (Yellow) $14.95 In stock
10 units · Medium (Orange) $14.95 In stock
10 units · Super Fine (Green) $14.95 In stock
10 units · Ultra Fine (Blue) $14.95 In stock


Classification Sanding & Polishing / Abrasives
Brand SIA Abrasives
  • 3 units
  • 10 units
Sold Since August 1, 2017



3 ¾ x 4 ¾ x ½" (98 mm x 120 mm x 13 mm)

Grit Type

Aluminium oxide


Polyurethane foam

Grit range
  • Bleu (Ultra Fine): 500 grit
  • Vert (Super Fine): 400 grit
  • Jaune (Fine): 280 grit
  • Orange (Medium): 180 grit
Recommended Surfaces

Hardwood, Softwood, Old paint, Old lacquer, Colour, Primer filler, PU lacquer, Polyester lacquer, UV lacquer, Water-based Varnish, Melamine sheet, NC lacquer, Bodyfiller, Plastics, Solid surface material, Plaster.

Customers who bought this item also bought


Great quality long lasting

Brandy Frenette · Mar 4, 2024

These are excellent quality long lasting sanding sponges

Great product

Louis Ranellucci · Aug 13, 2022

Works great

Great For Finishin!

Nigel Osborne · Jun 14, 2022

I make solid-body, electric guitars, and I have looked long and hard to find a really good product for dry sanding on clear coat finishes. I often want to level sand in between coats to minimize wet sanding at the end and prior to buffing. This product works great and ensures you don't run the risk of stripping away the clear in spots, especially where there are small round-overs. This is now my go-to for this stage in finishing.

Sanding sponge

Allan MacDonald · May 4, 2021

We refinish Kitchen Cabinets. We do a lot of hand sanding because of all the profiles and edges. We have been experimenting with a variety of different abrasives. This one comes out on top for our purposes. It’s comfortable to hold and conforms to any profile. The edges don’t on the paper and it allows us to sweep into crevices and tight spots with a perfect edge on the paper. Having abrasive on both sides is perfect for keeping a grip on the paper. We can sand flat spots with an open palm and little pressure and the paper stays in place. It also bounces back to same shape and rarely tears. This is perfect for our hand sanding.

Thanks Sia, and Ardec. Great product.

Spray it New
Peterborough Ontario

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