Bottle of regular Flat Out

FlatOut™ by MULTI SEAL®

No More – “Oh Drat, We’ve Got a Flat!”

FlatOut™ is a one-time tire additive that prevents flats due to punctures up to 1/2’’ and stops slow leaks around the bead or valve stem or due the natural porosity of the tire. It is made of synthetic TangleTek™ fibers including KEVLAR™ and unique DamRight™ fillers suspended in our special Never-Settle™ base fluid (non-adhesive, non-toxic and freeze-resistant). When a puncture occurs, escaping air forces FlatOut™ into the wound creating an airtight fiber jam. Think beaver dam but with the fibers and fillers forming an amazingly durable plug! And, It’s proven, having been used in Military and industrial applications for decades!

MULTI SEAL® has been the leader in industrial tire additive technology since 1981. We’re an engineering-driven, second generation family business, and we manufacture all of our products at our headquarters in Spring, Texas, USA.

John Deere X 125 riding lawn mower
The back of an RV trailer being pulled by a pickup truck on a dirt road
Focused on the wheels of an orange dirt bike
John Deere X 125 riding lawn mower
Comparitive graph of Flat Out versus the competition which includes up to 1/2 inch in the tread, works for 10 plus years and stays liquid for easy cleanup with water
Bottle of regular Flat Out

MULTI-PURPOSE — Engineered to Get the Job Done. For use in Riding Lawn Mower, Zero Turn Mower, Snow Blower, Wood Chipper and Wheelbarrow Tires and More

Bottle of 32 ounces trailer formula Flat Out

TRAILER — Engineered to Keep You Safe. For use in RV, Travel Trailer, Cargo Trailer, Boat Trailer, Horse Trailer and Utility Trailer Tires and More

Bottle of 32 ounces sportsman formula Flat Out

SPORTSMAN — Engineered for Extreme Terrain. For use in ATV, UTV, Golf Cart, Dirt Bike, Scooter and Off-Road Jeep/Truck Tires and More

Bottle of 32 ounces outdoor power equipment formula Flat Out

OUTDOOR POWER EQUIPMENT — Engineered to Get the Job Done. For use in Riding Lawn Mower, Zero Turn Mower, Snow Blower, Wood Chipper and Wheelbarrow Tires and More

Want to Purchase FlatOut™?

This consumer tire additive is ideal for the everyday outdoorsman! With several options in the FlatOut™ consumer line, you’re bound to find the perfect solution for you.