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 51857 .7 hp Trim Router (Complete), 20,000 RPM, 1/4 Collet
3M 84181, Microfinishing PSA Film Disc Roll 366L, 80 Mic 3MIL, Type D, 5 in x NH, Die 500X, 7010325881, 125 discs per roll
Dynabrade 92102 3" W x 10-11/16" L 80 Grit A/Z DynaCut Belt, 10/pack
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
Dynabrade 79152 1" W x 24" L 80 Grit DynaCut Premium Ceramic Belt, 50/pack
Dynabrade 51632 .1 hp Straight-Line Pencil Grinder, Central Vacuum, 1/8" Collet
Dynabrade 51860 1.0 hp Trim Router (Complete), 20,000 RPM, 1/4 Collet
3M 19769, Utility Cloth Sheet 314D, 9 in x 11 in P150 J-weight, 7000000357
3M 08027, Marine Grade Silicone Sealant, White, 304 mL Cartridge, 7000120476, 12/Case
Dynabrade 51863 .7 hp Trim Router (Complete), 20,000 RPM, 1/4 Collet
3M 11411, Roloc Disc 361F, 50 YF-weight, TR, 1 in, Die R100N, 7000045095
Dynabrade 79054 1/8" W x 24" L 80 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 90614 3" W x 10-11/16" L 80 Grit A/O DynaCut Belt, 10/pack
Dynabrade 78020 1/2" W x 18" L Medium NWN DynaBrite Belt, 10/pack
Air Turbine Tools 310RSV - 6mm Router Hand Tool Series with Brake, 25,000RPM, 33425
3M 20360, Scotch-Weld Epoxy Adhesive 2216, Gray, Part B, 5 Gallon Drum (Pail), 7000046360
Dynabrade 14000 Dynafile Abrasive Belt Tool
Dynabrade 90297 1/2" W x 18" L Coarse NWN DynaBrite Premium Belts, 10/pack
Dynabrade 78538 3/4"Dia. 2-Set, 3-48 Female Center Thread, 80 Grit, Dynacut A/O Overlap Slotted Disc, 100/pack
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
Dynabrade 79004 1/8" W x 12" L 80 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 96425 Screws For Vacuum Shroud (57737)
Dynabrade 90368 3/4" W x 34" L 80 Grit A/O DynaCut Belt, 50/pack
3M 01328, PSA Cloth Disc 348D, P180 X-weight, 3 in x NH, Die 300V, 7000045068
3M 45208, Disc Pad Face Plate, 5 in Soft White, 7000120521
Dynabrade 51740 .1 hp Straight-Line Pencil Grinder, Rear Exhaust, 60,000 RPM, 1/8" Collet, with Mount Stem
Dynabrade 78055 1" W x 24" L Medium NWN DynaBrite Belt, 10/pack
Dynabrade 95263 Open-End Wrench, 17 mm
Dynabrade 56205 5" Dia. Non-Vacuum Disc Pad, Vinyl-Face
Dynabrade 11078 Contact Wheel Ass'y, 5/8" Dia. x 3/8" W x 3/8" I.D., Crown Face, 70 Duro Rubber
Dynabrade 59380 Rotor/Vane Set
Dynabrade 82489 6" Dia. x 100 Grit A/O Vacuum PSA Filmbac DynaCut Disc, 100/Pack
Dynabrade 55242 Vane Set (4pk)
Dynabrade 51862 .4 hp Trim Router (Complete), 30,000 RPM, 1/4 Collet
Dynabrade 21432 ND220, Vane 5/Pack
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
Dynabrade 95886 Washers For Vacuum Shroud (57737)
Dynabrade 91429 1/2" W x 12" L 80 Grit A/O DynaCut Belt, 50/pack
Dynabrade 51330 .7 hp Router, Front Exhaust, 20,000 RPM, 3/8"-24 Spindle
3M 33446, Cubitron II File Belt, 80+, 1/2 in x 18 in (12.7 mm x 457.2 mm), 7100033186, 10 belts per carton, 5 cartons per case
Dynabrade 61420 Raptor Vac Electric Portable Vacuum System
Dynabrade 90407 1/8" W x 24" L 80 Grit A/O DynaCut Belt, 50/pack
Dynabrade 95600 Tune-Up Kit for .5 hp Motor
3Mâ„¢ 72122, Portable Compressed Air Filter and Regulator Panel 256-02-01, 100 cfm, 8 outlets, with Carbon Monoxide Monitor, 7000052147, 1 EA/Case
Dynabrade 51854 .4 hp Trim Router (Complete), 30,000 RPM, 1/4 Collet 
