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 94865 Air Hose 3/8" (10 mm) I.D. x 15 mm (O.D.)
Dynabrade 79121 1/4" W x 18" L 80 Grit Dynafire Premium Ceramic Belt, 50/pack
Dynabrade 91570 6" Dynacut Extreme Orange Premium Film Disc, 400 Grit, Hook & Loop, Vacuum Holes, 50/Box
Dynabrade 13214 Dynastraight Finishing Tool, .7 HP, Rear Exhaust, 4,500 RPM, 5/8"-11 Arbor
Dynabrade 79079 1/2" W x 13" L 120 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 13376 Housing for Model 13450
Dynabrade 64116 Filter
Dynabrade 90353 3-1/2" W x 15-1/2" L 60 Grit A/O DynaCut Belt, 10/ pack
Dynabrade 92115 1/2" W x 12" L 220 Grit A/O DynaCut Belt, 50/pack
Dynabrade 59118 3" Dia. Central Vacuum HiVac Dynorbital-Spirit Random Orbital Sander, 3/32" Orbit
Dynabrade 57400 2-3/4" (70 mm) W x 8" L Dynaline Sander, Non-Vacuum
Standard Abrasives 850307, Multi-Finish Wheel, 6 in x 3 in x 1 in 2S CRS, 7010301235
Dynabrade 91629 1-1/2" W x 24" L 320 Grit A/O DynaCut Belt, 10/pack
Dynabrade 82495 6" Dia. x 400 Grit A/O Vacuum PSA Filmbac DynaCut Disc, 100/Pack
Dynabrade 78709 3/8" x 3/4"-B52 Dynacut A/O Mounted Point, Vitrified, 5/pack
Dynabrade 79169 1" W x 30" L 40 Grit Ceramic DynaCut Belt, 50/pack
Dynabrade 52052 Lightweight Dyninger Finishing Tool, .4 HP, 0-3,200 RPM, 1/2" Arbor
Dynabrade 40750 Carbon Brush Set
Dynabrade 78571 1-1/2" Dia. x 8-32 Female Center Thread, 60 Grit, A/O, 3-Ply, J-DynaCut Eyelet Star, 50/pack
Dynabrade 78304 1-1/2" Dia. x 1" W x 1/4" Shank, 60 Grit, A/O DynaCut Flap Wheel, 10/pack
Dynabrade 97573 - 1/4" Safety Female Coupler w/Female Plug
Dynabrade 51078 Bearing
Dynabrade 54629 Rear Bearing Plate
Dynabrade Nitro Series RB3 - Electric 5" Rotary Buffer
Dynabrade 79011 1/2" W x 12" L 60 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 58514 2-3/4" W x 7-3/4" L Dynabug II Orbital Sander, Non-Vacuum, .11 hp, 8,000 RPM, 3/16" Orbit
Dynabrade 10850 DynaPen Reciprocating Tool Versatility Kit, 14,000 SPM, 1/8" Collet
Dynabrade 59180 6" Dia. Dynorbital-Spirit Random Orbital Sander, Non-Vacuum, 3/32" Orbit 
