FlatOut Tire Sealant for Off-Road & Outdoor Equipment, 1 Gallon — Kevlar Reinforced with Valve Core Tool

FlatOut Off Road Tire Sealant is a Kevlar-reinforced, water-washable formula designed to prevent and seal off-road and outdoor power equipment tire punctures up to 1/2 inch. FlatOut is a heavy-duty tire sealant made for outdoor power equipment and off-road utility tires. Packaged in a 1-gallon container and supplied with a valve core tool, this formula mixes non-toxic, latex- and adhesive-free components with Kevlar fibers to create internal patches that stop slow leaks and quickly seal many tread punctures. It’s engineered to be easy to use, clean up with water, and provide long-lasting protection for machines that work in rough, debris-filled environments.

How does FlatOut stop flats on lawn and commercial equipment?

When added to a tire, FlatOut coats the inner surface and forms a fibrous plug around the puncture site as air forces sealant through the hole. The Kevlar fibers provide structure and durability, producing a strong internal seal without leaving sticky residue.

• Seals punctures up to 1/2 inch in diameter
• Kevlar fibers create a resilient plug
• Latex- and adhesive-free for easy cleanup
• Continual protection while in service

Is it easy to apply and maintain once installed?

Yes. Application typically requires removing or loosening the valve core, injecting the recommended amount, then reinflating the tire. The included valve core tool simplifies insertion and removal, and periodic checks are all that’s needed.

• Includes valve core tool for quick application
• Adds directly through the valve stem—no dismounting required in most cases
• Water-washable for straightforward cleaning of rims or hands

What equipment is FlatOut intended for, and are there restrictions?

FlatOut is formulated specifically for outdoor power equipment and many off-road tires — think mowers, snow blowers, and utility equipment. It’s not recommended for standard passenger car tires or high-speed highway use.

• Recommended: riding lawn mowers, zero-turn mowers, snow blowers, wood chippers, wheelbarrows
• Trusted in landscaping, agriculture, and construction settings
• Not intended for passenger vehicles or high-speed highway applications

How long does protection last and what about durability?

FlatOut is formulated for extended service life; the manufacturer rates protection for many years under typical outdoor equipment use. The Kevlar fibers add tensile strength to seals, helping them resist agitation from rough terrain and repeated small impacts.

• Rated to provide ongoing leak protection for 10+ years in many applications
• Designed for rugged, debris-prone environments
• Resists washout and remains effective during regular equipment use

Who is this for? FlatOut is aimed at homeowners and professionals who maintain outdoor power equipment or off-road utility machines and want to minimize downtime, trips to the shop, and the expense of tire repairs. It’s suited to landscapers, grounds crews, farmers, and anyone operating zero-turn mowers, snow blowers, wood chippers, wheelbarrows, or similar gear that encounters nails, thorns, and rough terrain. Avoid using this product in passenger vehicles or where the tire manufacturer forbids sealants.

FAQ

Q: Can I use FlatOut in my riding lawn mower tire?

A: Yes. It’s formulated for riding lawn mowers, zero-turns, and similar outdoor power equipment; follow the manufacturer’s application volume and instructions.

Q: Will FlatOut damage rims or make a sticky mess?

A: No. The formula is water-washable and latex/adhesive-free, so it cleans from rims and tools without leaving a sticky residue.