FlatOut QuickStrike Tyre Sealant – 2 Pack (32 fl oz) Off‑Road Formula, Kevlar Reinforced, Seals Punctures to ½"

FlatOut QuickStrike Tire Sealant is a ready-to-use, Kevlar-reinforced liquid that prevents and seals tread-area punctures up to ½" for the life of the tire.

FlatOut QuickStrike combines fast-flowing chemistry with Kevlar fibers to create a durable barrier against leaks and punctures in tubed and tubeless tires. Designed as an on-road/off-road formula for heavier-use trailers and specialty vehicles, this sealant aims to reduce downtime and keep tires holding air without messy residue or drying out. It’s supplied in a two-pack of 32 fl oz bottles, formulated to move quickly to the breach and build a lasting plug where it’s needed most.

How quickly does QuickStrike seal a puncture?

QuickStrike is formulated to flow rapidly toward a puncture so it can start forming a plug right away. The product’s low-viscosity formula helps it reach the breach while Kevlar fibers and stabilizing agents form a physical mesh that fills the hole.

• Flows fast to the tread area when pressure drops.
• Keeps fibers mobile so they can bridge punctures up to ½".
• Works immediately on slow leaks and sudden small punctures.

Will it make a sticky mess or damage tire components?

FlatOut QuickStrike is latex- and adhesive-free and is water-washable, so it won’t leave sticky residue on rims or create long-term buildup inside the tire. Because it’s non-corrosive and non-flammable, it’s safe to use with valve stems and common wheel finishes when applied according to instructions.

• No latex or adhesives that dry and gum up rims.
• Water-washable for easier cleanup of rims and tools.
• Non-corrosive formula protects metal components and valve stems.

What types of punctures and tires does QuickStrike handle?

QuickStrike is engineered for tread-area punctures and slow leaks rather than sidewall tears. It seals most common punctures up to ½" and is effective in both tubed and tubeless configurations, making it suitable for trailers and specialty equipment rather than standard passenger cars.

• Seals tread punctures up to ½" reliably.
• Effective in tubed and tubeless tires.
• Recommended for RVs, boat trailers, horse trailers, utility trailers, and similar vehicles.

How long does a single application last?

FlatOut QuickStrike is designed as a one-time application that provides continuous protection for the lifespan of the tire. Once installed and distributed inside the tire, the formula remains active and does not dry out, so it continues to seal new punctures and prevent slow leaks.

• One application intended to last the life of the tire.
• Resists drying, maintaining sealing performance over time.
• Maintains effectiveness across normal temperature ranges for trailer use.

Who is this for? FlatOut QuickStrike On Road/Off-Road Formula is aimed at owners and operators of heavier trailer applications — RVs, boat or horse trailers, utility trailers and other specialty vehicles where flat prevention and quick puncture repair matter. It’s not recommended for everyday passenger cars; instead, choose this product when you need fast-acting, long-lasting leak protection that’s easy to install, cleanable, and reinforced with Kevlar fibers for robust puncture resistance.