3M
3M PSA Sanding Disc Brown 17in 120G PK12 89880553
Adhesive-backed 17-inch silicon carbide sanding discs, 120 grit, pack of 12 for wet or dry finishing
- TypeSanders & Grinders Accessories
- 12 discs per pack keep projects running without frequent reorders
- 17 inch diameter covers large surfaces in fewer passes
- 120 grit silicon carbide delivers smooth finishes on paint, primer, gel coat, metal and wood
- PSA adhesive backing mounts quickly to compatible disc pads
- Suitable for wet or dry sanding across multiple substrates
What It Is
These 3M PSA sanding discs are non‑woven abrasive accessories for power and pneumatic sanders. Each 17‑inch disc uses a pressure‑sensitive adhesive backing for quick mounting on a compatible disc pad. The pack contains twelve discs graded at 120 grit with silicon carbide mineral. They suit professional finishers and DIY users working on paint, primer, gel coat, metal or wood surfaces.
Adhesive Mounting Limits
The PSA attachment relies on a clean, flat disc pad to hold securely during operation. Dust, residue or an uneven pad surface can reduce grip and cause the disc to shift or detach under load. The adhesive is designed for single‑use mounting; repositioning after initial contact will weaken the bond. Wet‑sanding lubricants must be compatible with the adhesive to avoid premature release.
Build And Daily Use
Silicon carbide abrasive on a non‑woven web gives consistent cut and a uniform scratch pattern across the 17‑inch face. The open mesh construction resists loading when sanding soft coatings or wet surfaces. Discs are flexible enough to follow contours yet stiff enough for flat panel work. Brown colour coding identifies the 120 grit grade at a glance in a busy workshop.
Highlights
- 12 discs per pack keep projects running without frequent reorders
- 17 inch diameter covers large surfaces in fewer passes
- 120 grit silicon carbide delivers smooth finishes on paint, primer, gel coat, metal and wood
- PSA adhesive backing mounts quickly to compatible disc pads
- Suitable for wet or dry sanding across multiple substrates
Specifications
| Brand | 3M |
|---|---|
| Type | Sanders & Grinders Accessories |
Questions about this item
How many 17-inch discs come in the 120-grit pack?
The pack contains 12 discs, each 17 inches in diameter with a 120-grit silicon carbide surface.
What does the 120-grit rating deliver on paint, metal or wood?
A 120-grit silicon carbide disc gives a fine finish suitable for final smoothing on paint, primer, gel coat, metal and wood, wet or dry.
How does the PSA adhesive mounting affect disc changes on the tool?
The pressure-sensitive adhesive sticks directly to the tool's disc pad, so you peel off the old disc and press the new one in place without extra hardware.
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