Mercury 1504 13" Stiff Poly Scrub Brush w/ "B / 92" Clutch Plate

When the scrub brush on your rotary floor machine wears down, cleaning slows to a crawl and floors stop coming clean. The Mercury 1504 13-inch Stiff Poly Scrub Brush drops in as a direct replacement that restores full scrubbing power for daily hard-floor cleaning. Built for facility crews, cleaning contractors, and building maintenance teams, its stiff polypropylene bristles bite into ground-in dirt, old floor finish, and grime across tile, sealed concrete, and vinyl so every pass counts.

Poly bristles are the go-to general-purpose choice for routine floor scrubbing. They run more aggressive and lower in cost than nylon, come standard on most rotary machines, and handle the light-to-medium duty work that fills most cleaning schedules. The 1504 pairs those bristles with the universal Mercury Type B 92 clutch plate, so it mounts on a wide range of popular floor machines without special adapters.

Built for

• Daily scrubbing of tile, sealed concrete, terrazzo, and vinyl composition tile in schools, offices, and retail spaces.
• Cutting through grout lines and textured floors where a smooth floor pad cannot reach.
• Prepping floors before stripping or refinishing by breaking up old finish and heavy soil.
• Routine maintenance in restaurants, warehouses, gyms, and healthcare corridors.
• Replacing a worn brush to bring an older rotary machine back to full productivity.

Specifications

• Model: Mercury Floor Machines 1504
• Brush block diameter: 13-inch
• Bristle material: stiff polypropylene (poly), gray
• Bristle diameter: .028-inch
• Bristle length: 1.75-inch
• Cleaning coverage: bristles extend to a 15-inch sweep for wider passes
• Clutch plate: Mercury Type B 92, universal
• Compatible machines: Kent, Oreck, Clarke, Hoover, Advance, Pullman Holt, NSS, Nilfisk, Viper, and other Type B 92 machines

Frequently asked questions

What floors can I clean with the Mercury 1504 poly brush?

It is a general-purpose scrub brush suited to tile, grout, sealed concrete, terrazzo, and vinyl composition tile. The stiff poly bristles are aggressive enough for daily soil removal on most commercial hard floors.

Will this brush fit my floor machine?

The 1504 uses the universal Mercury Type B 92 clutch plate, which fits many popular rotary machines including Kent, Oreck, Clarke, Hoover, and Advance. Confirm your machine takes a 13-inch brush and a Type B 92 clutch plate before ordering.

What is the difference between poly and nylon bristles?

Poly bristles run more aggressive and lower in cost, making them a strong all-around choice for routine scrubbing. Nylon lasts longer and is gentler on delicate finishes but costs more. Poly is the common standard for general hard-floor cleaning.

Is this a scrub brush or a pad driver?

It is a true scrub brush with polypropylene bristles, not a pad driver. It scrubs the floor directly and does not hold a floor pad.

How do I know when to replace it?

Replace the brush when the bristles are worn short, splayed, or no longer cleaning evenly. A fresh brush restores coverage and cuts the number of passes needed.

Discount Cleaning Products is an authorized Mercury Floor Machines dealer offering US-based service and support. Our team can help you match the right brush, clutch plate, and machine so your floor care program keeps running at full strength. Order the genuine Mercury 1504 13-inch Stiff Poly Scrub Brush with confidence.