Durable and Dependable
We engineer 3M Fibre Disc 381C by adhering aluminum oxide mineral to a fibre backing. The closed coat construction on 3M Fibre Disc 381C means mineral grains cover nearly 100% of the backing, so the abrasive is durable under pressure. The stiff fibre backing is extremely durable, withstanding wear, while standing up to tough applications like beveling.
Tips for Optimal Use
Altogether, fiber discs are durable abrasive discs that deliver a fast cut for grinding and weld removal, and they come in a range of sizes to correspond to large or small welds. Fiber discs also work well for blending (creating a smooth surface after weld removal) and provide a consistent finish over the workpiece. These discs may be used with portable tools, facilitating easier access with the workpiece. For optimal performance, the disc should be used with a face plate of the appropriate density for the application – a lighter density face plate for finer grade applications and a harder density face plate for more coarse grinding applications. Using the correct face plate for the application ensures that the abrasive mineral will re-sharpen, maximizing the life of the abrasive.
Good for General Purpose Metalworking
When it comes to our 3M Fibre Disc product offerings, we recommend operators choose the performance level suited to their unique project needs. 3M Fibre Disc 381C offers an economical solution for a general purpose metalworking disc, because it can perform well on a variety of projects without sacrificing performance. Given its versatility, you’ll find the 3M Fibre Disc is applicable in many markets, as evidenced by its use in the marine and metalworking industries as well as in maintenance and repair operations. 3M Fibre Disc 381C is a great multi-purpose disc that’s good to have on hand.

Insize ISV-1H4177, RIGID BORESCOPE, 6.85", 6928640323775
3M 04240, Semi-Rigid Plastic Repair, 04240, 200 mL Cartridge, 7000046371
3M 36876, Self-Stick Liquid Protection Fabric, Blue, 4 in x 300 ft perroll, 7100169348, 6 Rolls Per Pack
3M 83497, Hookit Marine Fairing Board, Rigid, 4 1/2 in x 30 in, 7000045684
3M 34240, Semi-Rigid Plastic Repair, 34240, 47.3 mL Cartridge, 7000045498
3M 25859, 663FC, 3" X 90", 70u, Diamond Trizact Belts 7010508951
3M 34784, 663FC, 3" X 30", 20u, Trizact Diamond Belt, 7100063665
3M 08237, Semi-Rigid Parts Repair - 3, 08237, Black, 200 mL Cartridge, 7010327900
3M 71355, 663FC, 2" X 48", 70u, Diamond Trizact Belts, 7010534884
3M 53029, 663FC, 3" X 90", 20u, Diamond Trizact Belt 7100205965
3M 52980, 663FC, 2" X 90", 20u, Diamond Trizact Belts, 7100205967, 2/Box
3M 40211, Cloth Spiral Band 341D, 60 X-weight, 1 in x 1 in, 7100138141
Dynabrade 92013 1" Dia. x 1" W, 60 Grit, Z/A DynaCut Band, 10/pack
Standard Abrasives 707115, Spiral Band, 1 in x 1 in 50, 7010331384
3M 26612, Accuspray Atomizing Head Refill Pack for 3M PPS Series 2.0,Blue, 1.2 mm, 7100143442 (4 Nozzles/Kit)
3M 08302, Ultrapro Autobody Sealant, Clear, 5 oz Tube, 7000120449, 6 per case
3M 06564, Marine Adhesive Sealant 4200FC Fast Cure, Black, 295 mL Cartridge, 7000120497, 12/Case
Dynabrade 78468 2" Dia. x 3/4", 8-32 Female Center Thread, A/O, 180 Grit, 8-Ply J-DynaCut Cross Pad, 100/pack
3M 80774, Cloth Spiral Band 747D, 80 X-weight, 1 in x 1 in, 7100138166
3M 30202, Disposable Plastic Wheel Maskers, 12 in - 15 in, 125 per box, 7000125074
ACS Diamond Cloth Belt, CX1250 5/8" X 120" 125U
3M 07279, Polystyrene Foam Insulation Spray Adhesive 78, Inverted, Clear, 24 fl oz Can (Net Wt 17.9 oz), 7000046591, 12/Case
ACS CX1250 Diamond Belts, 1/2" X 24" 45u
3M 11137, Roloc Disc 361F, 50 YF-weight, TR, 1-1/2 in, Die R150S, 7000045094
3M 53914, Performance Plus Duct Tape 8979N Nuclear Red, 48 mm x 54.8 m 12.1 mil, 7000049014, 24/ case
3M 86745, Diamond Disc, 2" Roloc, 674W, 120 Mesh, TR, 7100022116, Box of 10 
