
United Abrasives SAIT 72821 Encore Regular Density Flap Disc is engineered for powerful grinding performance on tough metalworking applications. Featuring advanced ceramic 40 Grit abrasive, this flap disc delivers faster cutting, cooler grinding, and significantly longer life compared to zirconium alternatives—making it the ideal choice for high-pressure, heavy-duty work. The Type 29 angled design provides superior surface contact, allowing for aggressive stock removal, efficient weld grinding, beveling, and contouring. It's 4-1/2" Diameter and 7/8" Arbor Hole ensure quick, secure attachment to angle grinders, maximizing productivity for professional users.
Built with United Abrasives’ high-performance resin-bonded flap construction, the SAIT Flap Disc maintains consistent grinding action while reducing operator fatigue. Perfect for welders, fabricators, and industrial metalworkers, the SAIT 72821 delivers outstanding durability, superior grinding efficiency, and a cooler cut—helping you complete demanding jobs faster with cleaner results.
Type: Flap Disc | Abrasive Material: Ceramic | Diameter (in.): 4-1/2 | Arbor Hole (in.): 7/8 | Grit: 40 | Max RPM: 13300 | Disc Type: Type 29 | Box of: 10 | __quantity: 10
Features:
- Premium ceramic grain outlasts conventional zirconium in most applications
- Cooler cutting and fast, consistent finishes
- Contaminant Free (Fe + Cl + S < 0.1%)
- Flap discs are constructed by layering coated abrasive flaps so they wear away and expose new, sharp grain
- Flap discs increase productivity and reduce total grinding and finishing costs by grinding, blending & finishing in 1 step
- Fiberglass backings will wear uniformly with abrasive cloth and will not splinter or smear on the workpiece
- Fiberglass backed flap discs are designed for a lighter, quieter operation

Looking for more information about United Abrasives/SAIT Flap Disc? Click here to view the Catalog.
For help choosing the correct Flap Discs for your application, please call (800) 608-5210 or email info@intlairtool.com.
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