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 78480 3" Dia. x 1", 1/4-20 Female Center Thread, A/O, 180 Grit, 8-Ply J-DynaCut Cross Pad, 100/pack
Dynabrade 63605 RaptorVac PowerHead Replacement for 61201
Dynabrade 13400 Dynisher Finishing Tool, Rear Exhaust, 3,400 RPM
Dynabrade 65123 Adapter Assembly-1/2 X 72
Dynabrade 18590 O-Ring
Dynabrade 56890 6" Dia. Non-Vacuum Dynorbital Supreme Random Orbital Sander, 3/8" Orbit
Dynabrade 13402 Dynisher Finishing Tool, Rear Exhaust, 3,400 RPM, 5/8-11" Spindle Thread
Dynabrade 57850 3-2/3" W x 7" L Non-Vacuum Dynabug Disc Pad, Vinyl-Face
Dynabrade 48500 2" Dia. 7 Degree Offset Disc Sander, Rear Exhaust, .4 HP, 25,000 RPM
Dynabrade 59182 6" Dia. Dynorbital-Spirit Random Orbital Sander, Central Vacuum, 3/16" Orbit
Dynabrade 78714 1/4" x 3/4"-W164 Dynacut A/O Mounted Point, 5/pack
Dynabrade 79858 3" 320 Grit Dynacut Extreme Orange Film Vac Hook Face Disc, 50 per box
Dynabrade 18570 Vane Set (4pk)
Dynabrade 13401 Dynisher Finishing Tool
Dynabrade 52537 3" (76 mm) Dia. Straight-Line Vacuum Extension Cut-Off Wheel Tool
Dynabrade 91656 2" W x 48" L 120 Grit Z/A DynaCut Belt, 10/pack
Dynabrade 11668 Dynabelter Contact Arm Assembly, Stroke Sander 
