Mercury Floor Machines 1307 Scrub Brush – 11″, 180 Grit Nylon, B/92 Clutch Plate

Mercury 1307: 11″ 180 Grit Nylon Scrub Brush for Non-Slip and Textured Floors

The Mercury 1307 is an 11″ nylon scrub brush block fitted with DuPont Tynex A nylon bristles impregnated with 180 grit silicon carbide. The 11″ block spreads to cover 13 inches of contact area when installed on a floor machine via the included Type B/92 clutch plate, which fits the standard 5-inch center hole on 13-inch floor machine pad drivers. At 1.5-inch bristle length, the brush flexes into grout lines, non-slip texturing, and uneven surface profiles that a flat pad cannot contact evenly.

1307 Brush Specifications and Clutch Plate Details

• Brush block size: 11 inches (spreads to cover 13″ contact area on the floor)
• Bristle material: DuPont Tynex A nylon — blue fibers impregnated with 180 grit silicon carbide abrasive
• Bristle length: 1.5 inches — long enough to flex into grout lines and uneven surface texture
• Clutch plate: Type B/92 — durable plastic with 5-inch center hole, fits standard 13-inch floor machine pad drivers
• Compatible machines: Kent, Oreck, Clarke, Hoover, Mercury, NSS, Viper, and other machines with standard 5-inch center hole pad drivers
• Primary application: Scrubbing non-slip flooring, textured tile, grout lines, and uneven surfaces during wet maintenance cleaning

Where the 1307 Scrub Brush Outperforms Green or Blue Pads

Green and blue floor pads are flat — they contact the high points of a floor surface and skip over low points in grout lines, non-slip texturing, and surface irregularities. On a smooth VCT floor, a flat pad works effectively because the entire pad surface contacts the finish. On quarry tile, non-slip ceramic, epoxy broadcast floors, or concrete with a broom finish, the texture pattern creates gaps between the flat pad and the floor that the cleaning chemical and pad abrasion cannot reach. The 1307’s 1.5-inch flexible nylon bristles deflect under pressure to follow the surface profile, forcing the silicon carbide abrasive into grout channels and non-slip surface features where embedded soil accumulates. This is the mechanical reason a scrub brush outperforms a flat pad on textured flooring: bristle flex closes the gap between the cleaning medium and the soil surface. The 180 grit silicon carbide in the Tynex nylon provides abrasive scrubbing action without the rigidity of a hard bristle brush that could chip grout or damage softer tile finishes. At 180 grit, the brush is aggressive enough to loosen embedded grease and soil in food service and industrial environments but not so coarse that it scratches sealed or glazed surfaces during routine maintenance use.

Silicon Carbide Grit and DuPont Tynex Nylon at 180 Grit

DuPont Tynex A is a nylon monofilament used in industrial abrasive brushes because it combines the flexibility of nylon with the ability to hold abrasive particles within the filament structure — the silicon carbide is embedded throughout the nylon fiber, not just coated on the surface. As the bristle tips wear down through use, fresh abrasive is exposed continuously rather than depleting from the outside in. At 180 grit, the silicon carbide produces a scrubbing action equivalent to a medium-abrasive green pad on smooth surfaces, but with the added benefit of bristle flex on textured surfaces. Replace the 1307 when the bristle tips are worn down to less than 0.75 inch remaining length — at that point the bristles lose sufficient flex to reach into grout channels and the effective contact area decreases. The Type B/92 clutch plate is reusable: when replacing the brush block, the clutch plate transfers to the new brush if it remains undamaged.