3M Scotch-Brite 77257 Non-Woven Durable Flex Belt, 3/8" x 13", Coarse Grade, Brown

• 3M Scotch-Brite 77257 Durable Flex Low-Stretch Belt delivers aggressive deburring, blending, and finishing performance with flexibility and edge durability for use on file belt sanders, inline sanders, and manual backstands.
• Features:
  • Non-woven construction with aluminum oxide abrasive provides aggressive cutting while refining surfaces without altering underlying metal
  • Reinforced low-stretch backing maintains belt shape under pressure and improves contact consistency
  • High flexibility resists chunking and performs well on sanders with small contact wheels
  • Controlled cutting action minimizes gouging and delivers a burr-free finish
  • Best flexibility among Scotch-Brite Surface Conditioning belts, enabling contour wrapping and detail work
• Specifications:
  • Part No.: 77257
  • Product Line: 3M
  • Brand: Scotch-Brite
  • MFR Model: 77257
  • Applications: For cleaning, deburring, finishing, grinding, surface preparation, general industrial, marine, metalworking, MRO, transportation and heavy equipment, file belt sanders, inline sanders, manual backstand
  • Manufacturer: 3M Products
  • UPC: 076308772574
  • Brand: Scotch-Brite
  • Belt Width (in): 3/8
  • Belt Length (in): 13
  • Grade: Coarse
  • Abrasive Material: Aluminum Oxide
  • Color: Brown
  • Part Number 77257, UPC 076308772574
• The 3M 77257 Scotch-Brite Durable Flex Belt can also be referred to as Scotch-Brite Durable Flex low-stretch belt 77257, 3/8 inch x 13 inch coarse belt, non-woven abrasive belt, flexible sanding belt, aluminum oxide surface conditioning belt, and deburring belt for metal finishing.

 

3M, a global leader in abrasive technologies, offers the 77257 Durable Flex Belt to combine aggressive material removal with superior flexibility and durability—ideal for detailed blending and finishing even on curved or irregular surfaces.

 

Q: What makes this belt more flexible yet durable than others?
A: The combination of a reinforced non-woven, low-stretch backing with high-flexibility aluminum oxide construction resists chunking and maintains consistent contact during operations, setting it apart from traditional cloth or paper belts.

 

Q: What applications are best suited for the 77257 belt?
A: It excels at deburring, blending, cleaning, and surface preparation on metals—including stainless steel, carbon steel, and aluminum—used across general industrial, marine, MRO, and transportation industries.

 

Q: Will it fit detail sanding tools?
A: Yes. This 3/8 inch × 13 inch belt is designed for use on file belt sanders, inline sanders, and manual backstands—especially those with small contact wheels, where its flexibility is a critical advantage.