The 10 Best Tire Sealants

We spent 45 hours on research, videography, and editing, to review the top options for this wiki. Flat tires can be a driver’s worst nightmare, leaving you stranded on the side of the road and fumbling around with that old spare donut you thought you’d never have to use. With the right sealant, though, the experience can be made a little less painful — and with the best kits, it can even be quick and easy. From the temporary to the permanent, these ten fixes will help you get the job done. When users buy our independently chosen editorial picks, we may earn commissions to support our work.

10. Fix-A-Flat S420-6

Mainly for emergency situations, Fix-A-Flat S420-6 will simultaneously seal ruptures and inflate a tire, but usually only enough to get the rim off the ground. It’ll work in a pinch, but it shouldn’t be used to go farther than the nearest repair shop.

  • Also comes in two- and six-packs
  • Hose works on all standard valves
  • Safe for pressure monitoring systems

Brand Fix-A-Flat
Model S420-6
Weight 1.4 pounds
Rating 3.8 / 5.0

9. Slime 10009

Identifiable by its sea-green coloring, Slime 10009 is one of the better-known brands on the market today. It’s nontoxic, non-corrosive, and nonflammable, so you don’t have to worry about it damaging rims or rubber during application.

  • Comes in 32oz or 1-gal container
  • Can be used repeatedly
  • For tubeless tires only

Brand Slime
Model 10009
Weight 2.5 pounds
Rating 3.8 / 5.0

8. QuadBoss 0849

Most sealants only take care of tread punctures, but QuadBoss 0849 will also fill in tricky holes in the sidewall, making it the best option for ATV and off-road vehicles. And don’t worry about using it on the trail or in the woods — it’s also environmentally safe.

  • Comes with a hand pump
  • Should last a while
  • Not intended for use at high speeds

Brand Quadboss
Model TRTC1747
Weight 9 pounds
Rating 3.8 / 5.0

7. Ride-On M/C 41208

Motorcycle enthusiasts well know that flats aren’t the only problems they face on the road — there’s also proper wheel balancing. Ride-On M/C 41208 addresses both those issues at the same time, protectively coating and evenly weighting the insides of tires as you ride.

  • Helps dampen road noise
  • 8oz portable container
  • Suitable for high speeds

Brand Ride-On
Model 8 Oz
Weight 11.2 ounces
Rating 4.1 / 5.0

6. LiquiTube Premium

Marketed as a tougher option for use on commercial and industrial equipment, LiquiTube Premium is a chemical-based solution that is supposed to protect against air loss for the life of the tire. It’ll also remain as a fluid in the bottle down to sub-zero temperatures.

  • For quarter-inch tread punctures
  • Economical one-gallon jug
  • Chemicals might corrode rims

Brand Best Designs Inc
Model 1220-0128
Weight pending
Rating 4.3 / 5.0

5. Orange Endurance

Leaks can just as often spring from a loose bead as they can a puncture, which is why Orange Endurance is an alternative worth considering when other options fail. This latex-based product coats the tire’s whole casing, from edge to tread cap, ensuring no air escapes.

  • Lightweight solution
  • Injector for easy application
  • Can intermix with other sealants

Brand Orange Seal
Model pending
Weight pending
Rating 4.0 / 5.0

4. Fix-A-Flat Ultimate 1-Step

More compact — and some would argue more practical — than a spare, Fix-A-Flat Ultimate 1-Step does everything from repairing punctures to pumping up a depressed tire fully in under seven minutes. The kit works on all vehicles and is a must-have during long road trips.

  • Reusable inflator and gauge
  • Complete service at low price
  • Compressor can be finicky

Brand Fix-A-Flat
Model S50073
Weight 4.4 pounds
Rating 4.2 / 5.0

3. Stan’s NoTubes

If you ride a bike, Stan’s NoTubes is certainly one of the best ways to keep you on the road or trail. It’s amazingly effective and requires just two ounces per wheel, making it an extremely economical option for cyclists experiencing regular blowouts.

  • Lasts 2-7 months
  • Works in rain and snow
  • Great for tubeless tires

Brand NoTubes
Model TU80051-Parent
Weight 1.2 pounds
Rating 4.8 / 5.0

2. Slime 70004 Power Spair

Leave your worries at home with the Slime 70004 Power Spair, a complete roadside assistant that includes enough equipment to fix 30 flats. It features the brand’s iconic green sealant, but also a piston-driven compressor and a host of other handy tools.

  • Inflates standard car tire in 3 min
  • Comes in durable carrying case
  • Powered by battery or car outlet

Brand Slime
Model 70004
Weight 8.9 pounds
Rating 4.9 / 5.0

1. Berryman Seal-R

Effective on both tubed and tubeless tires, Berryman Seal-R is a popular choice for those looking to patch almost any vehicle in a jam. The value version comes in a gallon jug with a hand pump, making it easy to decant into smaller bottles for easier portability.

  • Biodegradable formula
  • Also available in 8oz size
  • Fiber technology plugs leaks well

Brand Berryman Products
Model 1301
Weight 8.7 pounds
Rating 4.6 / 5.0

How Tire Sealants Work

Tire sealants are one of the simplest and most cost effective ways to fix or prevent flat tires. Most often, they are comprised of a base of either glycol or latex. Glycol-based formulas contain a number of additives, such as binding agents, organic thickeners, rubber particles, cellulose fibers, and mica. The glycol acts as a carrier liquid for the additives. The fibers and particles can be anything from wool or Kevlar to ceramic. Latex-based formulas require fewer additives to plug tires. Because of this, latex varieties have a lower production cost and are often found in less costly tire sealants. While latex-based options are effective initially, they do have a shorter life span and will often dry in the tire more quickly than glycol-based formulas.

Both types of tire sealant work in a similar manner. They remain in a liquid state when injected into the tire until a puncture occurs. At this time, the pressure inside of the tire combined with centrifugal force pushes some of the tire sealant out through the puncture. The particles and fibers in glycol-based formulas clog the hole, creating an air-tight patch. Latex-based formulas work slightly differently. As a latex-based formula gets pushed out through the puncture, the escaping air passing over it causing it to rapidly dry and solidify, practically becoming part of the tire.

Despite a common misconception, the majority of tire sealants are actually intended for use as a preventative measure before one ends up stuck on the side of the road with a flat. There are a select few, however, that are specifically designed for roadside emergencies. Fix a Flat is one such variety. You can quickly identify whether a particular tire sealant is intended for use as a preventive or after-the-fact repair solution based on whether or not it contains some form of compressed air. While preventative tire sealants are safe for use after one gets a flat tire, after-the-fact repair solutions should not be used as preventative measures.

Pros And Cons Of Tire Sealant

Tire sealant is an extremely fast and affordable solution to fixing or preventing a flat. There is no arguing that it is also very convenient. Rather than spending thirty minutes sweating on the roadside swapping out your tire for a spare, you simply pull a small can out of your trunk, attach it to your damaged tire’s valve, and voila. No more flat tire. If you used the preventative variety, you may not ever even notice that your tire was punctured. It will simply repair itself as you continue to cruise down the highway.

One can purchase tire sealants almost anywhere, from your local automotive parts store to that corner gas station you pass every day. The best place to buy it is often online, though, where one can compare the many different varieties available for price and quality before making their choice.

Using tire sealant is also an ingenious way to prolong the life of an older tire if one doesn’t have the time or money to replace it. While we would never recommend someone drive on a tire that is worn, cracked, or otherwise compromised, if you are determined to do so, injecting a bit of tire sealant into it can make it significantly safer.

It is important to note that some tire sealants actually have the potential to damage a tire. If applied incorrectly, it can pool at the bottom, where it may dry and cause an imbalance or wheel misalignment. While rare, tire sealant may also damage the sensors inside of premium vehicles that alert the driver to when the pressure is low.

In some instances, low-quality sealants have been known to cause wheel corrosion, resulting in a costly replacement. Some service centers also refuse to fix a tire treated with a chemical sealant. There are a number of reasons for this, including the fact that some contain hazardous chemicals, and that they can increase the pressure inside of a tire to a point where the mechanic risks injury when trying to repair it. For most consumers though, the benefits and convenience of tire sealant far outweigh any potential drawbacks.

What Else To Keep In Your Roadside Emergency Bag

Tire sealant is just the one of many items that all drivers should keep in their car at all times. One of the smartest solutions is to purchase an emergency road kit that already contains any and everything you may need. For those that prefer to go the DIY route and piece together their kit, here are a few useful items you may want to consider purchasing.

Every car needs a fire extinguisher. It isn’t often that automobiles catch fire, but when they do, if you don’t have something to put it out quickly, you risk being in the vicinity of a nasty explosion. Keeping a fire extinguisher handy ensures you are ready to tackle the problem should it ever arise.

When stuck on the side of the road, it is important to alert other drivers of your situation. This may be because you are crouching next to the vehicle trying to repair the problem and you want to ensure passing motorists can see you for safety reasons, or you may need to attract the attention of emergency responders or a friendly driver who may be able to help. For these purposes, it is useful to have flares, triangular road reflectors, or flashing LEDs.

It seems like cars rarely break down on a nice sunny day. Rather, it often happens late at night, when it is so dark you can barely see your hand in front of your face. A flashlight will become invaluable at times like these.

Perhaps no items come in handier than a good pair jumper cables and a jump starter. Dead batteries are one of the most common problems to plague motorists. Keeping a charged jump starter in your vehicle allows you to get your car started and back on the road without aid from anyone else. One should still keep jumper cables in their car though for those times you reach for your jump starter only to realize that you forgot to charge it.