FlatOut Tubeless Tire Sealant - Sportsman Formula 1 Gallon, Fast-Acting Kevlar Reinforced

FlatOut Sportsman Formula is a fast-acting, Kevlar-reinforced tubeless tire sealant designed to stop punctures and slow leaks before they become flats.

Built for off-road riders, property managers, and anyone who depends on small to medium power vehicles, FlatOut combines microscopic fibers and a water-washable carrier to form instant plugs inside a rotating tire. The Sportsman Formula is optimized for ATVs, UTVs, golf carts, dirt bikes and side-by-sides, offering a no-sticky, non-toxic solution that helps reduce downtime and repair costs.

How quickly does FlatOut stop a puncture?

FlatOut is engineered to act as soon as air escapes through a hole: centrifugal force pushes the formula into the puncture where fibers bunch and create a durable plug. For most small-to-moderate punctures you’ll notice air loss slow or stop within seconds to minutes while driving.

• Fast-acting fiber suspension seals holes immediately on rotation
• Effective on common puncture sizes from nails, thorns, and small debris
• Works while vehicle is in motion—no roadside patching needed

Will this formula damage rims, valves, or TPMS systems?

FlatOut Sportsman Formula is water-washable and contains no latex or adhesives, minimizing residue inside rims or on valve components. The product includes a valve core tool for safe installation and is formulated to be compatible with most tubeless systems when used as directed.

• Non-sticky, latex-free formula reduces rim buildup
• Includes valve core tool to remove core and add sealant cleanly
• Washable with water for easy cleanup during tire service

How much sealant do I need and how is it applied?

Quantity depends on wheel diameter and tire volume; one gallon supplies multiple refills for smaller tires and several full fills for larger off-road tires. Application is simple: remove the valve core using the included tool, pour or inject the recommended amount, then reinstall the valve core and rotate the tire to distribute the sealant evenly.

• Refer to vehicle tire volume for precise fill levels
• Valve core removal tool included for straightforward application
• Rotate tires after filling to evenly coat the interior surface

What sets the Sportsman Formula apart from other sealants?

FlatOut uses super-strong Kevlar fibers in a specially balanced suspension that creates robust plugs without leaving a tacky mess. It’s formulated from years of field use by sportsmen, racers, and heavy equipment operators, balancing effectiveness with ease of cleanup.

• Kevlar fibers deliver high-strength sealing under rotation
• Field-tested by off-road professionals and equipment operators
• Designed to be non-toxic and easy to rinse from tires and rims

Who is this for? FlatOut Sportsman Formula is intended for off-road enthusiasts, fleet managers, landscapers, and anyone running ATVs, UTVs, golf carts, dirt bikes, or side-by-sides who wants to reduce tire downtime and avoid frequent roadside repairs. If you want a ready-to-use, Kevlar-reinforced, tubeless sealant that’s easy to apply and clean up, the Sportsman Formula is built to handle rugged use without adding messy latex residue.