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 53270 7" (180 mm) Dia. Right-Angle Disc Sander
Standard Abrasives 863240, S/C Unitized Wheel, 632, 3 in x 1/2 in x 1/4 in, 7100075531
3M 20922, PSA Cloth Disc 348D, 60 X-weight, 1-1/2 in x NH, Die 150S, 7010326528.
Standard Abrasives 880213, Buff and Blend GP Wheel, 2 in x 1 Ply x 1/4 in A MED, 7100095601
3M 90127, Scotch-Brite Deburr and Finish Pro Unitized Wheel, 3 in x 1/8 in x 1/4 in, 8C CRS+, 7100105326
Dynabrade 11486 Dynabelter Accu-Grinder Abrasive Belt Tool, Heavy-Duty
Insize 1150-1000, ELECTRONIC HEIGHT GAGE, 0-40"/0-1000mm, 6928640302695
Dynabrade 92187 1" W x 30" L 80 Grit A/Z DynaCut Belt, 50/pack
3M 10116, Synthetic Steel Wool Pads, 10116NA, #2 Medium, 2 in x 4 in, 7000047708
Dynabrade 92012 1" Dia. x 1" W, 36 Grit, Z/A DynaCut Band, 10/pack
Dynabrade 94990 1/4" Female Composite-Style Coupler with 1/4" Male Plug Assembly
Dynabrade 95745 1/4" NPT Speed Regulator
3M 65487, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc, DUH560TRI-10T, 5 IN x UH, 60, 7100202913, 10 per pack
Standard Abrasives 713276, Aluminum Oxide Handy Roll, P180 J-weight, 2 in x 50 yd, 7100037246 
