Multi Seal 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 to the natural porosity of the tire. It’s made of synthetic TangleTek fibers including Kevlar and unique DamRight fillers suspended in a 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. Like a beaver dam, but with the fibers and fillers forming an amazingly durable plug. Plus, it’s proven, having been used in military and industrial applications for decades.
Unique Trailer Formula is engineered to protect tires on travel trailers, boat trailers, horse trailers, toy haulers, cargo trailers, utility trailers, and more.
• One-time additive that prevents flats
• Seals leaks for the life of the tire
• Quick, simple installation with Easy Dispensing Cap
• Seals punctures up to 1/2″ in tread
Before You Order
Verify part number 20140 exactly Match the listed product details to the part you are replacing before ordering. Compare dimensions, specifications and fitment information with your RV or component.
Frequently Asked Questions
What part number should I verify before ordering?
Verify 20140 on your existing part, documentation or equipment label before ordering.
How should I confirm this part fits?
Compare the listed part number, dimensions, specifications and fitment details with your existing component. Do not rely on appearance alone.
