How to inflate a tire using a sealant can

What is a sealant can?

A sealant can is a disposable or reusable device that contains a mixture of liquid polymer sealant and compressed gas (usually propane or isobutane). Its main function is to temporarily restore the tightness of a punctured car tire without removing the wheel. After use, the composition is distributed inside the tire, seals the hole and simultaneously inflates the tire to a level sufficient for further movement.

Such cans are often included in the kit of modern cars instead of a spare tire. They are used by drivers of passenger cars, crossovers, and motorcyclists, because the compactness and speed of action make the sealant indispensable on the road.

The principle of operation of the sealant

The mixture inside the can consists of polymers and fibers that quickly harden when in contact with air. When the sealant is injected into the tire, it fills the internal cavity, and the pressure pushes some of the compound out through the puncture. There, the liquid stops the air from leaking out and forms a thin, elastic “patch” from the inside. At this point, the gas from the can acts as a compressor — increasing the pressure in the wheel to the operating level.

The process takes 3 to 5 minutes, after which the car is ready to drive again. However, such a patch is not permanent — upon arrival at the service, the sealant should be washed off, and the tire should be checked and repaired in the traditional way.

How to inflate a tire using a can of sealant?

1. Assess the situation. Make sure that the damage is minor — the hole does not exceed 5 mm in diameter, and the disk is not deformed. If the tire is torn or completely flat, sealant will not help.

2. Find the puncture site. Turn the wheel so that the hole is at the bottom - this will make it easier to distribute the sealant evenly.

3. Remove the cap from the valve. Prepare the can. If it comes with a hose - connect it to the valve. If the nozzle is built in - simply press the can.

4. Shake the can thoroughly. This is necessary to evenly mix the components. Without this, the sealant may come out unevenly and not seal the puncture.

5. Spray the sealant. Hold the can vertically. Press the button and release the contents until completely empty or according to the manufacturer's instructions (usually 1 can = 1 tire). The process takes 1-2 minutes.

6. Disconnect the can. If any sealant remains come out of the valve, quickly close it with the cap.

7. Drive a few hundred meters. This will help evenly distribute the sealant over the inner surface of the tire. After that, check the pressure — if necessary, pump up the wheel with a compressor or at a service station.

When you can and when you can’t use sealant

You can:

• for small punctures with a nail or screw;
• if the pressure has not completely dropped (the tire partially holds its shape);
• when you need to get to the nearest service.

You can’t:

• for large sidewall tears;
• if the tire is deflated «to zero» and came off the rim of the disk;
• if the disk is bent;
• at temperatures below -20 °C (some compounds thicken and do not flow inside).

Advantages of using sealant

1. Speed. Restoring pressure takes a few minutes — compared to 15-20 minutes when changing a wheel.
2. Simplicity. No jack, wrenches or spare tire required — everything is done with one hand.
3. Compactness. The can weighs 300-500 g and easily fits in the trunk or glove compartment.
4. Safety. You can fix the problem without going out onto the roadway.
5. Compatibility. Suitable for most types of tires — summer, winter, radial, tubeless.

Disadvantages and limitations

1. Temporary. Blockage is not a permanent repair — after 50-100 km the tire should be checked.
2. Change in balance. The sealant adds mass inside the tire, which can cause a slight imbalance.
3. Incompatibility with TPMS sensors. Some compounds damage pressure sensors — before use, it is worth checking the instructions.
4. Difficult to clean. After applying the sealant, it must be thoroughly washed, otherwise it will complicate vulcanization during repair.

Examples from real practice

• City driver. Hyundai i30 car, puncture in the rear wheel — 3 mm screw. Using the sealant allowed me to restore the pressure to 2.0 bar and drive 15 km to the tire fitting shop without losing air.
• Road scenario. Toyota RAV4 SUV, puncture in the tread after hitting a nail. The sealant filled the hole, the car drove 60 km to the service station, after which the tire was washed and repaired from the inside.
• Unfortunate case. The old disk had a microcrack in the bead area — the sealant did not help, since the air was not coming out through the puncture, but between the tire and the disk.

Types of sealants and their difference

1. Aerosol canscans are the most common. They are released under pressure and immediately supply sealant and gas. Suitable for passenger cars.
2. Liquid compositions in bottles are used together with a compressor. They are convenient to use for minibuses and SUVs.
3. Sealants with CO₂ cylinders combine the function of a sealant and quick inflation using carbon dioxide - popular among motorcyclists.

When choosing, pay attention to the following criteria:

• Volume. For passenger cars, 400-500 ml is enough, for SUVs - from 600 ml.
• Temperature range. Choose compositions suitable for winter (-30 °C to +50 °C).
• Compatibility with pressure sensors. The packaging should be marked «TPMS Safe».
• Expiration date. Sealants have a shelf life of 3-5 years — after that the gas may lose pressure.

Instructions for cleaning the tire after sealant

After you have reached the tire fitting, you need to remove the tire and rinse it from the inside with warm water. The sealant is not harmful, but when it dries, it creates a sticky film that prevents the patch from sticking. Some services use special alcohol-based cleaning fluids to remove residues more quickly. After that, the tire can be repaired in the standard way.

Do not use the can near an open flame. Do not exceed the recommended amount of sealant — excess can disrupt the balance of the wheel. Store the can in the trunk at a temperature not exceeding +50 °C.

Do not forget to check the pressure with a pressure gauge after use. If the sealant gets on the paintwork, wash it off with water - some compounds may leave stains.

Alternatives to sealant

1. Mini-compressors with a patch kit - more reliable, but takes more time.
2. Spare wheel or "dokatka" - a classic option, but takes up a lot of space.
3. Liquid preventive sealants - they are poured in advance, they work constantly, but increase the weight of the wheel.

Approximate price and economic feasibility

The price of a can of sealant in Ukraine ranges from 250 to 600 UAH, depending on the volume and brand. Calling a tow truck costs from 700 to 1500 UAH, and tire repair - 200-300 UAH. Thus, even a single use of the sealant justifies its cost. In addition, it takes up a minimum of space in the trunk and can be a decisive factor in an unforeseen situation.

FAQ

1. How much can you drive after using the sealant?
Depending on the composition, from 30 to 100 km. Then be sure to contact a tire fitting service.

2. Can sealant be used in winter?
Yes, but you should choose special winter compounds that do not thicken at low temperatures.

3. Is sealant harmful to wheels?
No, modern compounds are neutral to metals and coatings.

4. Can the tire be repaired later with a regular patch?
Yes, but first you need to completely remove the sealant residue.

5. How long does a canister last?
On average, 3-5 years. The date is indicated on the body.

6. Will sealant help with a sidewall puncture?
No. It is effective only for tread damage with a diameter of up to 5 mm.

7. Do I need to balance the wheel after using sealant?
It is advisable, especially if you feel vibrations.

8. Is sealant safe for TPMS systems?
Not all - check the "TPMS Safe" marking.

9. Can sealant be used in tubeless and tube tires?
Yes, but in tube cases the effectiveness is lower.

10. Can I keep the can in the car in winter?
Yes, if the temperature does not drop below -20 °C.

Sealant in a can - is a compact and quick way to restore the performance of the wheel on the road. Every driver should know how to inflate a tire using a can of sealant, because this is a skill that can save in a difficult situation. Proper use, following the instructions, and timely tire fitting will make this method safe and effective.

Eurowheel – your partner in safety and savings

If after applying the sealant you decide to replace the tire or are looking for a high-quality used set of winter or summer tires, contact the Eurowheel store. We offer a wide selection of European tires that have been tested and have retained excellent characteristics. Here you will find winter, summer, and all-season tires from well-known brands at bargain prices.

Store address: Kyiv, Saperno-Slobidska St., 8.
The warehouse is open from 8:00 to 18:00, the office is open from 8:00 to 21:00.
Delivery is available throughout Ukraine, consultations are available. free of charge.

Eurowheel — it is proven quality, fair price and confidence in every trip.