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 96674 Tune- Up Kit for 18150
Dynabrade 92298 4" Dia. RED-TRED Eraser Disc Backing Plate
Dynabrade 58600 Dual-Grip Random Orbital Sander for ESD, 6" (152 mm) Dia., Central Vacuum
Dynabrade 49135 Angle Head Drill, Central Vacuum
Dynabrade 79967 5" Dia. x 60 Grit A/O Non-Vacuum PSA DynaCut Disc, 100/Box
Dynabrade 90442 1/2" W x 30" L Coarse NWN DynaBrite Premium Belt, 10/pack
Dynabrade 52774 3/8" Reversible Drill, .5 HP, Rear Exhaust, 950 RPM
Dynabrade 91750 DynaMesh 11" 120 Grit Hook & Loop Discs, 25 per box 
