FAQ - Flat Fix Tyre Sealant

What is Flat Fix Puncture Protection?+
Flat Fix is a water-based product that is added to tires to protect against air leakage throughout the tire’s lifetime. When a puncture occurs, the repair happens immediately, and the tire retains its air pressure.
What is Flat Fix made of?+
Flat Fix is based on new technology that uses Kevlar and other types of fibers in different thicknesses and sizes, combined with mono propylene glycol and rubber particles. Together, these form a powerful and permanent seal for punctures.
Can I use Flat Fix in a car?+
No, it may cause imbalance.
Can Flat Fix seal rim leaks?+
Yes, but it's a bit harder and may take longer. It helps to drive the vehicle on a slope so the liquid can reach the rim edge.
Does Flat Fix react chemically with the rubber tire?+
No, Flat Fix is chemically inert.
Can Flat Fix cause rust on rims?+
No, Flat Fix contains rust inhibitors to prevent corrosion.
Can you use Flat Fix in inner tubes?+
Yes, but it's important to remove the object that caused the puncture. The result depends on the condition of the tube and the extent of the damage.
Will Flat Fix dry out inside the tire?+
No, because the tire is a sealed container, the liquid cannot evaporate and Flat Fix retains its consistency.
What's the difference between Flat Fix and puncture spray?+
Puncture spray is a temporary aerosol-based fix. Flat Fix is water-based and suitable for preventive protection. It is eco-friendly and non-flammable.
How do you fill a tire with Flat Fix?+
Flat Fix is applied through the valve using a pump or poured in when changing the tire.
How does Flat Fix repair tire damage?+
Flat Fix is drawn to the air leak and builds a plug using Kevlar fibers and particles that seals the hole permanently.
What is the shelf life of Flat Fix?+
Flat Fix has an almost unlimited shelf life as long as the container remains sealed.
Can Flat Fix handle cold winters?+
Yes, Flat Fix can withstand extreme temperatures from -40°C to +92°C.
Does Flat Fix settle at the bottom when the vehicle is stationary?+
Partially. About 30% stays in place and coats the inside of the tire.
Can Flat Fix seal sidewall damage?+
No, due to the flexibility of the sidewall, it's difficult to achieve a safe and permanent repair.
Can Flat Fix be used in construction machinery?+
Yes, Flat Fix Premium is developed for that. Flat Fix XXL is recommended for very large damages.
Is Flat Fix dangerous?+
No, Flat Fix is environmentally friendly and non-flammable.
Can Flat Fix extend the life of the tire?+
Yes, it protects the tire with every puncture by instantly sealing the hole, which extends the tire's lifespan.
Can Flat Fix be used in both new and used tires?+
Yes. However, worn tires may require slightly more liquid as the pores absorb some.
How many punctures can be sealed with one dose?+
It depends on several factors: damage size, air pressure, damage location, and tire condition.

Flat Fix – The Smart Way to Avoid Punctures

Flat Fix Puncture Protection is a unique liquid developed to protect tires from 80–95% of all common tire damages. Flat Fix Puncture Protection is ideally used preventively to avoid punctures. The liquid protects and repairs the tire from the inside and seals holes and damages immediately when they occur. When a puncture happens, the air pressure forces the liquid to the damage site, creating a strong and permanent repair while the vehicle continues to drive without stopping.

Kevlar-Reinforced Fibers for Maximum Protection

The fibers form the backbone of the puncture protection. The stronger the fibers, the stronger the repairs. The strongest fibers are advanced synthetic ones (such as Kevlar), also used in bulletproof vests. Using a variety of different fibers is also very important, especially in relatively thin tires like those on ATVs, golf carts, and lawnmowers. The greater the variation in fiber length and branching, the faster a seal is formed and the stronger the repair becomes.

First, a strong plug is formed by the fibers, then the sealing is completed by filler particles that penetrate between the fibers to create an effective airtight plug. These filler particles are absolutely essential for high-performance puncture protection.

How Flat Fix Works – Seals Instantly at the Damage

As the tire rotates, Flat Fix Puncture Protection is evenly distributed along the inside of the tire. The moment a puncture occurs, air pressure forces millions of fibers, fiber particles, and filler particles together into the damage site, forming a seal that plugs the hole and stops further air loss within one to two tire rotations. The process is so fast that in many cases the driver doesn’t even notice a puncture has occurred. When the tires are later inspected, the object that caused the puncture may be found and can then be removed. Once removed, the vehicle should be driven immediately to allow the liquid to reseal the puncture.

Depending on the type of Flat Fix used, holes as large as 30 mm can be sealed using this technology.

A Safe and Eco-Friendly Solution

With Flat Fix in your tires, it can provide protection against as many as 35–45 punctures. It is developed to function under extreme temperature conditions, from –40°C to +92°C. Flat Fix is non-flammable and non-toxic. Flat Fix Puncture Protection is 100% biodegradable and therefore easy to rinse off with water when the tire is dismounted.