Deburr, Blend and Finish Stainless Steel
3M Cloth Belt 777F contains a grinding aid that reduces running temperatures when used on heat-sensitive alloys like stainless steel, nickel alloys and cobalt alloys. The abrasive grain is bonded to the backing with resin to maintain durability under high heat and pressure. This belt is recommended for use on stainless steel or other exotic metal alloys for dimensioning parts, deburring, blending, and finishing castings and forgings.
Ceramic Abrasive Grain Boosts Performance
For increased performance, 777F products feature aluminum oxide blended with 3M ceramic abrasive grain for a harder, longer-lasting abrasive. Ceramic/aluminum oxide blend surpasses aluminum oxide abrasives in cut-rate and durability and makes the Cloth Belt 777F an excellent choice for moderate stock removal and surface preparation.
Sized to Suit Your Needs
These abrasive belts are available in various widths and lengths for sanding both wood and metal. We offer a broad selection of belts to fit most any industrial belt sander. Wider belts are used with wide belt sanders to dimension or finish wood panels, smooth rough-cut edges of metal sheets, or add a grain pattern to stainless steel sheets. Medium-width belts fit onto edge sanders for sanding flat, narrow surfaces such as panel edges; and narrow belts are used with portable belt sanders for sanding or blending wood pieces such as cabinet doors.
Find Your Flex
Belts come with various flexibilities and splices that join the belt ends. Our 3M Cloth Belt 777F has a film splice for added strength when grinding in high pressure applications. When greater flexibility may be needed to increase conformity or for a softer touch for finishing and blending, an L-flex provides more flexibility than the standard flex, and a full flex belt is the most flexible.
Applications
- Moderate stock removal
- Deburring stainless steel
- Finishing stainless steel
- Surface preparation

Dynabrade 58511 68 mm x 175 mm Dynabug II Orbital Sander, Non-Vacuum, .15 hp, 10,000 RPM, 3/32" Orbit
3M 41024, Scotch Box Lock Paper Packaging Tape 7850-23-8GC, 1.88 in x 25 yd (48 mm x 22.8 m), 7100282638
Dynabrade 79702 - 5-1/2" Dynacut White Foam Flat Face Polishing Pad, Hook and Loop
Dynabrade 56177 6" Dia. Non-Vacuum Disc Pad, Vinyl-Face
Dynabrade 92936 - 5" (127 mm) Dia. x 2-3/4" (70 mm) W Standard Dynacushion Pneumatic Wheel
Dynabrade 91164 3/8" W x 13" L 120 Grit A/O DynaCut Belt, 50/pack
Dynabrade 79028 1/4" W x 18" L 80 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 78008 1/2" W x 12" L Very Fine Non-Woven DynaBrite Belts, 10/pack
Dynabrade 78860 Crimped Wire Radial Wheel Brush 2" Dia. x .006 x 7/16" Steel
Dynabrade 56354 2-2/3" x 6-7/8" Non-Vacuum Dynabug II Disc Pad, Vinyl-Face
Dynabrade 78007 1/2" W x 12" L Medium Non-Woven DynaBrite Belts, 10/pack
Dynabrade 57571 3-1/2" Dia. Wet Dynorbital Supreme Random Orbital Sander, Deluxe, 3/16" Orbit
Dynabrade 56106 5" Dia. Non-Vacuum Disc Pad, Vinyl-Face
Dynabrade 56195 5" Dia. Non-Vacuum 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 64862 Variable Speed Versatility Grinder, Slack-Action, 3 hp, 240 V (AC), 3 Phase, 50/60 Hz, 2,000-8,000 SFPM, 1/4"-2" W x 72" L (6-51 mm x 122 cm) Belts 
