Extra Fine and Indispensable
Few shops can do without abrasives in handy sheet form, and our 3M Paper Sheet 405U is built to be indispensable. A flexible A-weight paper backing provides excellent conformability and silicon carbide abrasive mineral delivers exceptional finishes.
Our silicon carbide abrasive sheets create a smoother finish than aluminum oxide products on most substrates. While it breaks down faster than aluminum oxide, it produces a superior finish. A resin bond construction provides superior grain retention while the open coat construction, along with the load-resistant coating, combine to provide excellent anti-loading characteristics.
These versatile sanding sheets contain the ideal abrasive grain type and grades for multi-step finishing processes.
Paper Backing for Conformability to Contours
The light A-weight backing provides conformability over contours and into crevices and corners. The sheet can also be easily cut to fit a hand pad block, inline sander, or finishing or power sanders. Other applications include general sanding, finishing, blending, surface leveling, prep prior to staining/painting and scuff sanding between coatings.
Recommended Applications
Silicon carbide is a synthetic mineral that is very sharp and commonly used for final finishing in white wood sanding.
It is ideal for general purpose sanding on wood, metal, plastic, dry wall, fiberglass, glass and ceramic materials as well as contour blending.

Dynabrade 94857 12' Max Flow 10mm I.D. Air Hose Assembly, Male (1/4") / Male (1/4") Fitting Ends Included
Dynabrade 51556 Lever Arm, Air Valve Marked
Dynabrade 61205 RaptorVac Pneumatic DrumVac Kit, Single Operator, General Purpose
Dynabrade 46001 .4 hp Right Angle Die Grinder, Rear Exhaust, 15,000 RPM, 1/4" Collet
Dynabrade 15349 Contact Wheel Ass'y, 2" Dia. x 1" W x 5/8" I.D., Flat Face, 90 Duro Rubber
Dynabrade 90036 5" Dia. Polishing Pad, Natural Sheepskin Wool
Dynabrade 82456 5" Dia. x 100 Grit A/O PSA Filmbac DynaCut Disc, 100/Box
Dynabrade 66370 Filter, Regulator, Lubricator and Manifold
Dynabrade 78590 3/8" Dia. x 1" W x 1/8" Center Hole, 60 Grit, 100/pack
Dynabrade 96177 Dynaswivel Display Pack 10-Pak
Dynabrade 94407 1/4" NPT Composite-Style Flow Control Dynaswivel
Dynabrade 64210 36" (91 cm) W x 72" (183 cm) L Downdraft Sanding Table, 230 V (AC)
Dynabrade 57127 3" (76 mm) Dia. Right Angle Depressed Center Wheel Grinder, Steel Housing, .55 HP, 15,000 RPM, 3/8"-24 Spindle
Dynabrade 15351 Contact Arm Assembly, 1 Dia. x 2 W, Serrated Wheel, 70 Durometer
Dynabrade 53690 Grip
Dynabrade 58400 5" Dia. Two-Hand Dynorbital Random Orbital Sander, Non-Vacuum
Dynabrade 78315 2" Dia. x 1" W x 1/4" Shank, Coarse, NWN DynaBrite Wheel, 10/pack
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
Dynabrade 52434 3" (76 mm) Dia. Straight-Line Cut-Off Wheel Tool, Front Exhaust, .5 HP, 20,000 RPM, 3/8"-24 Spindle
Dynabrade 53510 - .5 hp Straight-Line 3" (76 mm) Extension Die Grinder, Rear Exhaust, 18,000 RPM, 1/4" Collet
Dynabrade 82569 1/2" W x 24" L 36 Grit Ceramic DynaCut Belt, 50/pack
Dynabrade 52212 .5 hp 7 Degree Offset Die Grinder, Front Exhaust, Short Shank, 20,000 RPM, 1/4" Collet
Dynabrade 11462 Dynabelter Finisher
Dynabrade 47801 .4 hp Right Angle Die Grinder, Front Exhaust, 15,000 RPM, 1/4" Collet
Dynabrade 46000 .4 hp Right Angle Die Grinder, Rear Exhaust, 12,000 RPM, 1/4" Collet
Dynabrade 79592 1-1/2" W x 30" L Medium Dynaprep Premium Plus Belt, 10/pack
Dynabrade 52101 .5 hp Straight-Line Die Grinder, Rear Exhaust, 3,400 RPM, 1/4" Collet
Dynabrade X61VHS 6" Dia. Central-Vacuum Dynorbital Extreme Random Orbital Sander with Speed Regulator
Dynabrade 02624 Pinion
3M 06845, Sanding Screen, 80 Grit, 7 in x 5/16 in, 7100160972
Dynabrade 79037 3/4" W x 18" L 120 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 95462 1/2" NPT Original Aluminum Dynaswivel
Dynabrade 58085 Polyurethane Elbow 
