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 91114 1/4" W x 18" L 60 Grit A/O DynaCut Belt, 50/pack
Dynabrade 51303 .5 hp Straight-Line Die Grinder, Front Exhaust, 24,000 RPM, 1/4" Collet
Dynabrade 13444 Shroud Assembly, 4" Wide, Dynisher
Dynabrade 78709 3/8" x 3/4"-B52 Dynacut A/O Mounted Point, Vitrified, 5/pack
Dynabrade 53783 Cone or Plug Grinder (Single Extension), Steel Housing, 20,000 RPM, 3/8"-24 Male Thread Spindle
Dynabrade 52936 1/4" Drill, .4 HP, Rear Exhaust, 20,000 RPM
Dynabrade 40321 Dynafile II Abrasive Belt Tool Versatility Kit
Dynabrade 51348 2" Dia. Locking-Type Disc Pad, Medium Density, 1/4"-20 Thread
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 X62HS 6" Dia. Non-Vacuum Dynorbital Extreme Random Orbital Sander, Hook Pad W/ Speed Regulator
Dynabrade 58506 3-7/8" W x 5-5/8" L Dynabug II Orbital Sander, Central Vacuum, .15 HP, 10,000 RPM, 3/32" Orbit
Dynabrade 50679 Open-End Wrench, 26 mm
Dynabrade 59380 Rotor/Vane Set
Dynabrade 91642 2" W x 36" L 320 Grit A/O DynaCut Belt, 10/pack
3M 32118, Sandpaper, 9 in x 11 in, 40 Grit, 7010364782, 5 sheets per pack
Dynabrade 51306 .5 hp Straight-Line Die Grinder, Rear Exhaust, 20,000 RPM, 1/4" Collet
Dynabrade 92207 1/8" W x 12" L 120 Grit A/O DynaCut Belt, 50/pack
Dynabrade 93172 4" Dia. X 1/4" Dia. Shank, 320 Grit, A/O, Spindle-Mount Sanding Star
Dynabrade 59179 6" Dia. Dynorbital-Spirit Random Orbital Sander, Non-Vacuum, 3/16" Orbit
Dynabrade 50010 Collet, 3/8"-24 Female Thread, 1/4" Capacity, 3-Piece Collet
Dynabrade 78705 1-1/2" x 8-32 Female Center Thread, Medium, Dynabrite Surface Conditioning Eyelet Star, 50/pack
Dynabrade 90729 5" Dia. x 2" W, 80 Grit, Z/A DynaCut Band, 10/pack
Dynabrade 40750 Carbon Brush Set
Dynabrade 95746 3/8" NPT Speed Regulator
Dynabrade 95541 Grease Gun
Dynabrade 55169 Stem, Air Control
Dynabrade 14264 Dynangle Contact Arm Assy, 1-3/4" Dia x 1" W Smooth Urethane, 7/8" Radiused Corner
Dynabrade 59180 6" Dia. Dynorbital-Spirit Random Orbital Sander, Non-Vacuum, 3/32" Orbit
Dynabrade 50947 - 8" (203 mm) Dia. Non-Vacuum Wet/Dry Sander Disc Pad, Hook-Face, Short Nap
3M 60332, Scotch Fire-Retardant Electric Arc Proofing Tape 77, 1-1/2 in x 20 ft, Black, 7100004537
Dynabrade 52474 Vane Set (4pk)
Dynabrade 79192 1/4" W x 24" L 120 Grit DynaCut Premium Ceramic Belt, 50/pack
Dynabrade 95676 1/4" Female Coupler with 1/4" Male Plug Assembly 
