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 91723 DynaMesh 5" 600 Grit Hook & Loop Discs, 50 per box
Dynabrade 96581 Vacuum Hose Hanger ( 1 Each)
Dynabrade 15108 Knob Assembly
Dynabrade 98621 Motor Tune-Up Kit
Dynabrade 56451 Short Block Assy- 11" Gear Driven
Dynabrade 78526 2-1/2" x 1/2", 1/4-20 Female Center Thread, 80 Grit, 8-Ply, Dynacut A/O Square Pad, 100/pack
Dynabrade 79122 1/2" W x 18" L 40 Grit DynaCut Premium Ceramic Belts, 50/pack
Dynabrade 52374 4" (102 mm) Dia. Straight-Line Type 1 Wheel Grinder, 1 HP, 15,000 RPM, 3/8"-24 Spindle
Dynabrade 93169 4" Dia. X 1/4" Dia. Shank, 180 Grit, A/O, Spindle-Mount Sanding Star
Dynabrade 52884 Housing for Model 52862, 25,000 RPM
Dynabrade 56712 Round Switch - Bottom
Dynabrade 52280 .55 hp Right Angle Die Grinder, Rear Exhaust, 15,00 RPM, 1/4" Collet
Dynabrade 79543 1" W x 11" L Very Fine NWN DynaBrite Belt, 10/pack
Dynabrade 43505 .4 hp 3" (76 mm) Extension Die Grinder, Rear Exhaust, 25,000 RPM, 1/4" Collet
Dynabrade 78492 4" Dia. x 1", 1/4-20 Female Center Thread, A/O, 180 Grit, 8-Ply J-DynaCut Cross Pad, 100/pack 
