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 52379 4" (102 mm) Dia. Straight-Line Type 1 Extension Wheel Grinder, 1 HP, 12,000 RPM, 3/8"-24 Spindle
Dynabrade 93351 Carbide Burr 12-Piece Burr Kit, 1/8" Shank
Dynabrade 52494 Valve Body Assembly
Dynabrade 48316 .4 hp Right Angle Die Grinder, Rear Exhaust, 15,000 RPM, 1/4" Collet
Dynabrade 92737 2" W x 150' L 30 Micron A/O Microfinishing Film DynaCut Roll
Dynabrade 51430 5" Dia. 7 Degree Offset Rotary Buffer, .4 hp, 3,200 RPM, Rear Exhaust, 3/8"-24 Spindle Thread
Dynabrade 78825 Crimped Wire End Brush 1/2" Dia. x .006 x 7/8" Stainless Steel
Dynabrade 78624 1" Dia. x 1-1/2" W x 1/4" Center Hole, 60 Grit, 100/pack
Dynabrade 79977 6" Dia. x 60 Grit Non-Vacuum PSA DynaCut Disc, 100/Pack
Dynabrade 91553 6" Non-Vacuum 60 Grit, Dynacut Extreme Orange Premium Film PSA Disc, 50/pack
Dynabrade 53280 7" (180 mm) Dia. Right-Angle Grinder, 2.8 HP, 8,500 RPM, 5/8"-11 Spindle
Dynabrade 15312 Belt Guard Assembly
Dynabrade 90765 1-1/2" Dia. x 2" W, Medium, Non-Woven DynaBrite Band, 10/pack 
