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 51999 Housing Assembly for 51860, 20,000 RPM
Dynabrade 78143 6" Dia. x 1/2" Center Hole, Extra Coarse, DynaStrip Disc
Dynabrade 13460 Dynisher Finishing Tool Versatility Kit
Dynabrade 11322 Contact Arm Ass'y, 5/8" Dia. x 3/8" W, Rubber Wheel, with Guide Wheels
Dynabrade 11011 Idler Arm Assembly
Dynabrade 92209 1/8" W x 12" L 220 Grit A/O DynaCut Belt, 50/pack
Dynabrade 93172 4" Dia. X 1/4" Dia. Shank, 320 Grit, A/O, Spindle-Mount Sanding Star
Dynabrade 94855 5' Max Flow 8mm I.D. Whip hose w/ Composite Swivel, Male (1/4") / Male (1/4")
3M 10299, Scotch Vinyl Color Coding Electrical Tape 35, 1/2 in x 20 ft, Brown, 7000132638
Dynabrade 91245 8" Dia. x 180 Grit A/O Vacuum PSA DynaCut Disc, 25/Box
Dynabrade 91629 1-1/2" W x 24" L 320 Grit A/O DynaCut Belt, 10/pack
Dynabrade 79026 1/4" W x 18" L 40 Grit A/Z DynaCut Belt, 50/pack 
