Which tyre sealant is the best and why

I would recommend Ultraseal, and here is a little bit of information, explaining why:

Ultraseal "is NOT LIKE a tyre sealant!" Traditional tyre sealants are simple inexpensive products, formulated with as little as 4 ingredients, very similar to wallpaper paste, and containing particles of shredded tyres, that "temporarily" clog up a hole in a tyre. When they are applied in a high speed tyre, because of heat, and centrifugal forces, they break down, and dry up, thus rendering them ineffective. This may be detrimental to the tyre in the long term, and they may also rust or corrode rims, and steel belts. Ultraseal is completely different as it is a "concentrated viscous gel", consisting of 24 ingredients of complex, and comprehensive secret formulation, plus specially manufactured "coarse surface" synthetic fibres, that interlock together like Velcro in the hole, and is a tyre-life extender, and conditioner that cures, and "permanently" seals punctures in a high speed tyre, with the help of the heat that is generated through contact with the road. Ultraseal is the only product in the world that contains Thixogel™, and is Thixotropic, which means it goes from a gel to a liquid with centrifugal forces, and then immediately snaps back to a gel, just before coming to rest. That's why Ultraseal always stays evenly dispersed on the inner tyre instead of pooling on the bottom, which is one of the many reasons it works at high speed.

Ultraseal is in a league of its own. It is a premier world famous product, tested and purchased by NASA, and other respected institutions alike. Ultraseal has a patented thixotropic emulsion (Thixogel™) that bonds the molecules of the product together at speeds up to 150mph, thus allowing the driving complete flexibility. Previously available products, and most current ones, have simply "fallen apart" at around 55-65mph. Ultraseal is a "concentrated viscous gel" which is easy to apply. One application lasts the legal life of the tyre. Ultraseal will completely coat the inner surface giving your tyre a 2-3 mm thick liquid inner tube which maintains your tyre pressure, (making them last longer), while the synthetic fibres contained within the compound are on guard ready to deal with the motorists' worst fear - PUNCTURE.

Facts & AttributesExtends Tyre LifeProtects Against Under InflationIncreases RetreadabilityRetards Dry-Rot & Casing DegradationHeat Reduction (#1 Killer of Tyres)Safety FactorLasts The Life Of The TyreProtects The Entire Inner Surface Of The TyrePositive Sealing CapabilitiesWater-Soluble (for easy clean up)Protection Against Rust & CorrosionCannot Create A Balance ProblemEliminates Most Flats & BlowoutsCompatible With All Retread Methods

Punctureseal has been tested and proven to maintain air pressure, retard aging within the casing, reduce heat build-up and increase tyre life on an average of 25% and higher in most cases.

Punctureseal has the ability to eliminate porosity, air migration and seepage, thereby allowing the tyre to maintain optimum air pressure, preventing the inception of most tread separations & zipper ruptures.

Punctureseal has the ability to protect against the inception of tread and ply separations caused by air migration between the plies of new and retread tyres, thereby resulting in additional retread cycles and extended casing life.

Punctureseal has the ability to retard dry rot and aging from within the tyre, which increases the life of any tubeless tyre casing.

Punctureseal assists in protecting tyres from devastating heat build-up which is associated with friction caused by under inflation and/or overloading. Punctureseal contains specific ingredients that aid in conductioning heat away from the tyre, by transmitting additional heat to the rim (which is the tyre's natural heat sink), resulting in a cooler running tubeless tyre for any type of equipment or vehicle, regardless of mission profile.

Punctureseal provides safety factors that are not found in any tyre. Punctureseal will not mask or hide damage that has breached the integrity of the tyre. Punctureseal is specially formulated to allow any serious puncture (potentially dangerous) to slowly bleed air and Punctureseal out of the wound, thereby allowing the tyre to deflate in a controlled manner. This attribute provides safety and aids in alleviating the hazards associated with blowouts.

Punctureseal contains Thixogel™ a proprietary process that protects the sealant against heat and provides the ability to overcome the centrifugal force of a rotating tyre. Punctureseal performance is not diminished by speed, distance or time.

Punctureseal's Thixogel™ provides a coating that clings to the entire surface of the tyre/rim assembly. The sidewalls including every square inch of the inner air cavity, retain a 0.050 coating of the product (approximately the thickness of a quarter), thereby providing protection for the tyre at all times.

Punctureseal repairs are positive and secure, thereby transforming any tyre into a self-sealing tyre. Punctureseal is capable of sealing tread area punctures caused by puncturing objects up to 1/4" in diameter, as long as the puncturing object has not severely damaged and/or weakened the tyre's structural integrity. Punctureseal can not create a secure repair in any tyre that has major internal damage, regardless of the puncturing object's diameter.

Punctureseal is completely water-soluble in its liquid state, and leaves no residue when rinsed with plain water. Yet it will not dissolve within a wound after it has cured. Standard repairing procedures can be utilized without additional effort.

Punctureseal contains a complete rust and corrosion inhibiting system that not only protects steel and alloy wheels, but in a wound, Punctureseal's proprietary process will also protect steel belts. Outside contaminants are prevented from leaching back into the wound which would cause the steel belts to rust and the plys to separate. Without Punctureseal's protection, the contaminants would quickly destroy valuable casings.

Treating a tyre with the recommended amount of Punctureseal does not provide for an excessive amount of product to accumulate in the tread area, therefore the tyre is not subjected to a mass of substance that would create an imbalance. Punctureseal can not create an imbalance due to the unique ability to evenly coat the entire inner surfaces of the tyre/rim assembly (0.050 coating) subjected to normal centrifugal force. If the suspension is worn beyond specified tolerance, or a tyre/rim assembly is not balanced and/or trued, the abnormal centrifugal force generated will have enough gravitational force to pull Punctureseal off the vertical surfaces and collect in the problem area thereby increasing the "existing" imbalance problem. If the problem is severe enough the driver will feel a vibration. The vibration indicates that a problem pre-existed in the tyre assembly or suspension prior to installing Punctureseal. Punctureseal International recommends that the balance and trueness of a tyre assembly and/or the worthiness of the front suspension be verified, prior to the installation of Punctureseal.

The majority of flats and blowouts are a result of driver negligence. The number one cause being excessive heat generated from under inflation. The overheated, under inflated tyre becomes soft and can be penetrated very easily. However, under inflation creates additional problems such as tread separations, ply separations and zipper ruptures. All of the above is primarily caused by porosity (natural air migration) which exists in all tyres to some degree. Punctureseal eliminates air migration and prevents the majority of damage created by under inflation, thereby preventing most related blowouts. The sealing capabilities of Punctureseal are unparalleled by any tyre sealant, worldwide.

Punctureseal conditions the casing and retards aging. Plus, the ability to be thoroughly cleaned out of the tyre assures no hindrance for inspection. The product is non-hazardous, non-flammable, does not present a disposal problem and has no compatibility problems.

I would recommend Punctureseal for the following reasons: Though Punctureseal and Ultraseal have got similar abilities and to be honest, both work, Punctureseal is unique in the way it conducts its business; It is the only tyre sealant i know of which franchises its operations. Nothing is 100% perfect, you may need after sales service. Punctureseal has got localised franchisee and their product has got factory warranty for the legal life of the tyre. These guys are very professional and they would rather not treat your vehicle if they think the tyres or the vehicle is not in the 'right' condition. I don't know from which corner ofthe world you are from, but i would recommend you go for Punctureseal if they are operating in your county, or country otherwise go for Ultraseal. By the way if Punctureseal is not in your country, you will not get it since they control the product movement and is only passed through the Franchise channel ......bad point and good one depending on which side you are looking at it.