Some floors will not come clean with a pad no matter how many passes you make - quarry tile in a kitchen, a non-slip safety floor, a restroom with deep grout joints. The Mercury 1307 is the answer to that job. It is a grit-impregnated nylon scrub brush that mounts on a 13-inch rotary floor machine and is built specifically to take the place of a blue or green scrubbing pad, delivering pad-level aggression with bristles that actually reach into the profile of the floor.
Built for
- Commercial kitchens and food-prep areas with quarry tile and heavily soiled grout.
- Restrooms where soap film and body soil build up in the grout lines between tiles.
- Non-slip and textured safety flooring that defeats flat pads by design.
- Periodic deep scrubs on resilient flooring ahead of a strip-and-recoat.
- Any account where blue or green pads are being consumed faster than the budget likes.
What the 180 grit actually does
The fill is blue .035-inch DuPont Tynex A nylon with 180 grit silicon carbide impregnated through the filament - not coated on the outside. That distinction matters: as the bristle wears, fresh abrasive is continually exposed, so the brush keeps cutting through its service life rather than going smooth after the first few jobs. The result is a brush that removes soil the way a pad does while still flexing into grout joints and surface texture.
Nylon also stays flexible. Where a stiff polypropylene fill is ideal for general scrubbing on a fairly even floor, nylon bends around the peaks and valleys of an uneven surface, which is why it is the fill of choice for narrow grout lines and irregular tile. Crews that have fought a textured floor with a pad usually describe the switch to a grit brush as the moment the floor finally came clean.
Because it is a brush rather than a consumable pad, it is rinsed and reused. For a facility going through cases of blue pads on the same recurring deep-scrub route, a grit brush changes the supply math substantially.
Fitment and coverage
The block is 11 inches. The 1.5-inch bristles spread under machine weight to roughly 13 inches of working coverage, which is why this is the correct brush for a 13-inch machine. It includes the universal Type B / 92 clutch plate - durable plastic with the standard 5-inch center hole - that couples the block to the machine drive. That plate fits a wide range of single-disc machines including Kent, Pullman Holt, Oreck, Advance, Alto, Clarke, Betco, Cassidy, Dart, Eureka, General, Hawk, Hoover, Koblenz, Lawlor, Mastercraft, Mercury, NSS, Nilfisk, Pacific, SSS, Thoromatic, Tornado, United and Viper.
Specifications
- Brush block diameter: 11 inches; bristle spread approximately 13 inches
- Fill: blue .035-inch DuPont Tynex A nylon impregnated with 180 grit silicon carbide, 1.5-inch trim
- Clutch plate: Type B / 92 universal, plastic, 5-inch center hole (included)
- Machine size: fits most 13-inch rotary floor machines and buffers
- Intended replacement for: blue and green floor buffer pads
- Manufacturer part number: 1307
Safety note from the manufacturer: do not use this brush with flammable materials such as fuels, solvents or thinners. Serious injury could result from fire or explosion.
Frequently asked questions
What machines does this brush fit?
It fits most 13-inch rotary floor machines and buffers that accept the universal Type B / 92 clutch plate, which is included. The plate has a standard 5-inch center hole and matches machines from Clarke, Advance, Nilfisk, Tornado, NSS, Oreck, Hoover, Kent, Betco and many others.
Is this brush too aggressive for my floor?
It is a grit brush intended to replace blue or green pads, so it is a deep-scrub tool rather than a daily cleaning tool. It is well suited to quarry tile, grouted surfaces, non-slip flooring and unsealed concrete. On a soft finished floor it will remove finish, so test an inconspicuous area first.
Does the grit wear off over time?
The 180 grit silicon carbide is impregnated through the nylon filament rather than applied to the surface. As the bristle wears, new abrasive is exposed, so the brush keeps cutting through its service life instead of going smooth after the first use.
Why is an 11-inch brush listed for a 13-inch machine?
Eleven inches is the brush block measurement. The 1.5-inch bristles splay outward under the weight of the machine and cover roughly 13 inches, matching a 13-inch machine skirt. The 11-inch block is the correct part.
How does this compare to the Mercury 1304?
The 1304 uses .028-inch stiff polypropylene for general scrubbing. The 1307 uses nylon with 180 grit abrasive and is more aggressive. Choose the 1304 for routine maintenance cleaning and the 1307 when you need to replace a scrubbing pad or remove heavier soil.
Discount Cleaning Products is an authorized dealer for Mercury. Orders ship from US stocking locations and our US-based team can help you confirm fitment, arbor size or machine compatibility before you buy.
