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 57920 4" W x 4-5/16" L Dynabug "Model T" Orbital Sander, Non-Vacuum with Clips, 20,000 RPM, 3/32" Orbit
Dynabrade 82547 3/4" W x 18" L 36 Grit Ceramic DynaCut Belt, 50/pack
Dynabrade 07129 Gasket
Dynabrade 11078 Contact Wheel Ass'y, 5/8" Dia. x 3/8" W x 3/8" I.D., Crown Face, 70 Duro Rubber
Dynabrade 78081 2" W x 72" L Medium NWN DynaBrite Belt, 10/pack
Dynabrade 95150 Screw
Dynabrade 90679 2" W x 30" L 120 Grit A/O DynaCut Belt, 10/pack
Dynabrade 01021 Valve Stem
Dynabrade 90360 2" W x 34" L 36 Grit Z/A DynaCut Belt, 10/pack
Dynabrade 96044 Motor Tune-Up Kit
Dynabrade 79230 3-1/2" Dia. x 80 Grit A/O Non-Vacuum PSA DynaCut Disc, 100/Roll
Dynabrade 79702 - 5-1/2" Dynacut White Foam Flat Face Polishing Pad, Hook and Loop
Dynabrade 57396 Valve Stem
Dynabrade 58406 6" Dia. Two-Hand Dynorbital Random Orbital Sander, Self-Generated Vacuum
Dynabrade 52667 1 hp Straight-Line Die Grinder, Rear Exhaust, 15,000 RPM, 1/4" Collet
Dynabrade 97571 1/2" NPT Male Safety Coupler
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
Dynabrade 09600 Housing Sleeve for 43500 - 25,000 RPM Die Grinder
Dynabrade X52H 5" (127 mm) Dia. Non-Vacuum Dynorbital Extreme Random Orbital Sander, .3 HP, 12,000 RPM, 3/32" Orbit, Hook-Face
Dynabrade 79027 1/4" W x 18" L 60 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 50610 6" Dia. Vacuum Disc Pad, Hook-Face, Long Nap
Dynabrade 58405 6" Dia. Two-Hand Dynorbital Random Orbital Sander, Non-Vacuum
Dynabrade 13504 Dynastraight Finishing Tool, 1 HP, Rear Exhaust, 3,400 RPM, 5/8"-11 Threaded Arbor
Dynabrade 52615 5" (127mm) Dia. Right Angle Vacuum Cut-Off Wheel Tool
Dynabrade 96338 - 11" Diamond Adj. Wrench
Dynabrade 95800 [1-1/4" Thread - 1-1/4" Non-Thread], Non-Conductive Vacuum Hose Cuff (Includes 95895 Insert)
Dynabrade 93917 3" Dia. x 3/8" CH 40/50 Grit Continuous Rim Diamond Cut-Off Wheel
Dynabrade 91703 DynaMesh 3" 150 Grit Hook & Loop Discs, 50 per box
Dynabrade 57400 2-3/4" (70 mm) W x 8" L Dynaline Sander, Non-Vacuum
Dynabrade 11286 Contact Arm Ass'y, 5/8" Dia. x 3/8" W, Rubber Wheel, with 1/2" W Platen
Dynabrade 57500 Palm-Style Mini-Dynorbital Random Orbital Sander
Dynabrade 14344 Tension Idler Arm
Dynabrade 40078 Belt Sander Adapter/ Extension 
