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Q1.How long has OKO Group manufactured an OKO Tyre sealant?
A.   OKO has been manufactured for over 31 years.

Q2.Can OKO Puncture Free be installed in any tyre?
A.   Yes, OKO can be applied to any Pneumatic tyre.

Q3.Is OKO Puncture Free safe and legal to install in my tyres?
A.   Yes, it is both safe and legal.

Q4.Does OKO Puncture Free affect the tyre life or the performance?
A.   Performance, No. OKO does not affect tyre structures or rubber. In some cases it is possible the tyre life will be extended as OKO may cool the tyre. OKO will eliminate the possibility of a tyre life being shortened due to "Runfl at" damage.

Q5.Will OKO Puncture Free corrode the wheels, rust wheel rims or steel belts?
A.   No. There are special corrosion inhibitors in the OKO formulation that inhibit corrosion in steel & alloy rims. They will prevent the product from causing oxidation in brass valve stems. If any residue of OKO is touching the inner rim, it can be washed off when a tyre is changed. It is advisable NOT to use a tyre sealant with chrome wheels as they are susceptible to chemical effects.
OKO uses inhibitors unique to the tyre sealant industry. These inhibitors within the OKO mix are entirely friendly to the environment.

Q6.To what extent is the OKO On Road Puncture Free suitable for higher speeds?
A.   OKO On Road Puncture Free has been tested at various speeds in a variety of vehicles, including Trucks, Motorcycles and Cars.
OKO has been tested on Race Tracks in Motorcycles at high speeds.
OKO On Road is recommended for use on the highway but users should maintain a speed within the legal limits.

Q7.When the OKO Puncture Free liquid is inside the tyre, does it react with the air inside the tyre and go hard?
A.   No. OKO remains liquid inside the tyre. It will seal a hole under pressure and then dry instantly, but it will not react with the air inside the tyre and turn hard.

Q8.Is OKO Puncture Free harmful? Does it contain any harmful ingredients?
A.   The OKO Group uses its best endeavors to formulate products which are as environmentally friendly and as safe to use, store and dispose of as possible. All OKO formulations are audited by "Chemtox" (www.chemtox-Trotters.com).
No OKO product is classifi ed as harmful, fl ammable or combustible. All are regarded as non-hazardous.

Q9.What type of damage can OKO Puncture Free seal and repair?
A.   OKO will seal holes caused by nails, screws, glass, stones and sharp objects.

Q10.How strong is the OKO seal that blocks the holes and punctures?
A.    The OKO Group regard the seal to be a permanent seal due to its strength. When subjected to a "strength test" at the Gerotek Test Facility, OKO was compared to a "Repair plug" and a "vulcanised repair". In this case, it was shown that the OKO permanent seal was 1.62 times stronger than a vulcanised repair and 7 times stronger than a "repair plug". (The tyre industry state that a "Traditional repair" defi ned as a vulcanised repair" is permanent. Therefore, the seal made by OKO Puncture Free ON Road & OFF Road, that is so much stronger, should be regarded by users and consumers as "more permanent still").

Q11.Can a number of punctures weaken the Tyre structures?
A.    Tyre structures are likely to be weakened by side-wall and "Run fl at" damage.
OKO will eliminate much if not all of the risks associated with "Run Flat damage". OKO is not designed to seal side wall holes that weaken the structure.

Q12.What should a driver do if a tyre is inspected and a nail is seen in the tread area of the tyre?
A.    According to UK Forensic studies, a nail can penetrate a tyre and on average will remain there for between 60 and 180 miles (96 to 290 kms). The nail is likely to eject itself after this period. If OKO is inside the tyre, and the vehicle is motionless, and the nail is noticed to be in the tread area:

  1. The driver should pull the nail; AND,
  2. Drive immediately;
This will cause OKO to make a new seal. If the nail is unnoticed and ejects itself from the tyre as the vehicle is in motion, OKO will make a new seal.

Q13.How many holes will OKO Puncture Free seal using one application?
A.    OKO is designed to seal many holes. OKO is the true "Multi-sealing" tyre sealant. A small amount of OKO is used to seal a single hole in the tyre casing. OKO efficacy was proven at Aldershot with The British Army.
There, OKO blocked and sealed 30 holes in ONE tyre. This was a Land Rover tyre and the vehicle remained in operation for months afterwards on manoeuvres. (OKO Military Test video available).
OKO Concentrate for Bikes seals many holes in Bicycle tyres and can keep a tyre puncture free for years. OFF Road OKO was tested on one of the worst construction sites in the UK. It reduced punctures by 95%.

Q14.To what pressure does OKO Puncture Free seal?
A.    OKO has sealed a Quad tyre at 2.5 PSI (0.15 bar). It has sealed a Truck tyre at 145 p.s.i. (10.0 bar). There is little practical limit on the high side.

Q15.How often does OKO Puncture Free need to be replaced inside a tyre?
A.    Not at all. OKO is designed to last the legal life of a tyre.

Q16.Does OKO Puncture Free degrade, dry out or separate?
A.    No. OKO remains in suspension. It remains ready to stop punctures, always.

Q17.Up to what size puncture will OKO Puncture Free seal?
A.    The OKO seal size varies with the type and grade of OKO used. OKO ON Road RTG seals holes caused by puncturing objects with a diameter of 8mm in On Road Trucks. OKO Concentrate for Bikes will seal up to 3.5mm. On Road OKO for motorcycles will seal up to 5mm and On road OKO LCV (for Autos, Commercial Vans) seals up to 7mm.
Enduro & Motocross OKO is designed any hole from 7mm to 10mm and can cope with the threat of "snake bites".
OFF Road OKO seals up to 10 mm. Off Road OKO is heavy duty and has sealed holes in operational vehicles in North African mines with holes of 18mm.

Q18.Does OKO cause problems if it is necessary to make a vulcanised repair?
A.    This is likely to be an extremely rare event. Due to the strength of the OKO seal, in normal conditions, it is unlikely that a conventional vulcanised repair is required. If necessary, OKO can be removed from the inside of the tyre by washing it out. The best method is by using a hose. The tyre can be dried. Then, a vulcanised repair can be applied, if necessary.

Q19.What happens to the OKO sealant in a tyre when a vehicle is garaged and idle for a week or two? Does it need to be driven again at reduced speeds?
A.    Generally, once the OKO has coated the inner tyre, the majority of the OKO will remain as a coating. If the "On Road vehicle" has been idle for a long period some minor wheel vibration may be detected when fi rst starting off. This will disappear rapidly if the vehicle is driven steadily. This question is NOT relevant to the use of OFF Road OKO; OKO Concentrate for Bikes; ON Road RTG OKO for Heavy Trucks or Buses over 5 tonnes.

Q20.Does OKO Puncture Free cause wheel imbalance?
A.    OKO Puncture Free will not cause wheel imbalance if the product is dosed correctly. Any temptation to apply more than the recommended dose must be strictly resisted.
When applying ON Road OKO to a Motorcycle or Car, the instructions should be strictly adhered to. Only the recommended quantity should be inserted. Having applied the OKO, these vehicles should be driven carefully and slowly for a distance of 10 to 16 km. - (approx. 6 to 10 miles). In the case of OKO RTG (for heavy trucks), the recommended distance is 3 to 5 km. (2 to 3 miles).
During this initial "run in" distance, OKO will line the inner tread area of the tyre. Once this inner coat has been formed, there should be no wheel imbalance. Any minor quantity acting as a reservoir by swirling around the tyre is not suffi cient to cause wheel vibration. It is recommended that wheels of vehicles of 5 tonnes or lower are balanced prior to fi tting OKO.
In some cases, where initial wheel vibration is experienced at certain speeds, the vehicle must be driven slowly until vibration disappears.
OKO OFF Road should NOT be fi tted to fast moving ON road vehicles or driven at a speed exceeding 80 kph (50 mph).

Q21.Within what range of temperatures does OKO Puncture Free operate?
A.    From – 45 degrees C. to above + 45 degrees C. Both OKO OFF Road Puncture Free and ON Road OKO have been used in vehicles in hot Desert conditions and in the Antarctica.
OKO Puncture Free RTG was tested in fast moving truck tyres over a 500 mile course starting at 6,000 feet above sea level and driving down to sea level. The trucks repeated the journey until at least 110,000 Km (68,750 miles) had been driven. Punctures suffered early during this test remained sealed throughout. The holes remained blocked by the permanent OKO seal. After 110,000 km, the product remained effective, sealing further punctures. OKO Puncture Free RTG remained inside the tyre in liquid form, positioned as designed, effectively coating and protecting the inner tread area of the tyres.
During this test, it is probable that the Truck tyre temperatures exceeded 45ºC. It is likely that the inclusion of a special ingredient within the formulation kept the tyres cooler than normal.

Q22.What are "ballasted" pneumatic tyres?
A.    Tyres fi lled with water. Some rear Tractor tyres are ballasted by farmers to weigh weigh down the vehicle. Or some pack rear tyres with weights or sand.
Ballasting the tyre with a higher quantity of OKO would be preferable to using water or sand. At least the puncture problem would be eliminated too.
(OKO cannot function inside a tyre that has been fi lled with water).

Q23.Will the OKO Puncture Free stain my clothes?
A.    If OKO splashes onto the clothes, it should be wiped off immediately, and preferably with a wet cloth. If some OKO residue remains, wash the clothing that evening or during the same day. Avoid leaving the clothes for a long time with the OKO in a dry state. Importantly, contact with clothing should be avoided.

Q24.Will OKO Puncture Free swill inside the tyre and affect the valve stem causing a misreading of the tyre air pressure?
A.    No. When applying the OKO product, some residue may remain inside the valve stem. This residue should be cleared by using an air-line as per the instructions. OKO Tyre sealant coats the inside of the tyre. It will not travel back up the valve stem. Normally, conditions inside the tyre mean that no air is forced back through the valve stem out to the outside environment.

Q25.Why does the OKO product NOT block and seal a valve stem as if it were a hole when the tyre is defl ated?
A.    When a tyre is defl ated on purpose for any reason (by an individual), it is virtually guaranteed that the vehicle is standing still. When the tyre is motionless the OKO remains in place, coating the inside tread area of the tyre. It does not travel towards the valve stem. Insuffi cient air pressure and the lack of movement is enough to ensure the OKO remains in its correct place.

Q26.Are there any special requirements to be considered in terms of health & safety?
A.    Not especially, but common sense needs to be used. Avoid contact with the eyes; avoid prolonged skin contact with the sticky viscous layer inside the tyre; and, do not drink the product. OKO Puncture Free can be removed from the skin with soaps and industrial hand cleaners. If OKO gets in the eyes, wash with copious amounts of clean water.

Q27.Is the amount of OKO Puncture Free applied to any particular tyre size critical?
A.    Yes. The amounts to be applied for any given tyre size are shown on the labels and comprehensive application charts printed by The OKO Group.

Q28.Can OKO Puncture Free be used in tyres with inner tubes as well as tubeless tyres?
A.    Yes. OKO Puncture Free will seal holes in the outer casing and in the inner tubes as well. In certain situations, there are reservations.
It should always be asked, "why use an inner tube if applying OKO Puncture Free?".
Inner tubes are problematical. Inner tubes are unreliable and the wall thickness is inconsistent. The quality of inner tubes internationally is poor. The inner tube can move inside the tyre. Inner tubes tend to rip when a puncturing object remains.
Essentially, OKO Puncture Free will function and seal holes without or with inner tubes, but the best combination for most OFF & ON Road users is to use a Tubeless tyre with OKO Puncture Free applied. This is the less expensive option and better performing option for puncture free driving.
One major reservation: If ON Road OKO Puncture Free RTG is to be applied to the tyres of a Heavy truck, then apply to tubeless tyres only.

Q29.From a consumer point of view, why are there so many different types of OKO? Should care be exercised when choosing which grade?
A.    The OKO Group makes several different formulations. These are designed and engineered especially for certain vehicle types.
Amongst these different formulations are:-

  • OKO Concentrate for Bikes.
  • An OFF Road OKO Puncture Free.
  • An On Road OKO Puncture Free RTG – for Heavy Trucks & Buses.
  • An ON Road OKO Puncture Free LCV – for vehicles less than 5 tonnes.
Furthermore, there are FOUR different Motorcycle OKO grades produced especially for specifi c machines and uses. These are -
  • An On Road OKO - On Road fast motorcycles;
  • An On Road OKO - Mopeds & scooters;
  • A Special OKO - Quads & ATVs;
  • Heavy-Duty Competition OKO - Enduro & Motocross
Any user of OKO will be able to choose the relevant grade of OKO Puncture Free by examining the clear description of the product type that is marked upon the labels of the different size bottles and drums.

Q30.Are there any additional environmental impacts when disposing of tyres fitted with OKO, compared to tyres without OKO?
A.    No. Tyres with OKO can be disposed of via conventional recycling. OKO Group can recommend methods required if there is a signifi cant amount of OKO to disperse.

Q31.Are there any special maintenance requirements for tyres fi tted with OKO?
A.    No. As with any other tyres, drivers should check their tyres regularly for cuts, penetration damage, and a loss of air pressure. Checks should be made at least once per week, whether it is an OFF Road tyre or any type of ON Road tyre.

Q32.Are OKO Puncture Free fi tted tyres likely to replace "run fl at" tyres?
A.    Unlikely. The widest choice should be available to consumers. As long as truthful and full knowledge is freely available, the consumer can make a proper choice. "Run Flat" tyres are supplied by Tyre Manufacturers and may be considered useful for specifi c users who are willing to pay more for that particular tyre knowing it may only function correctly once.
OKO Puncture Free claims to provide a permanent seal product that has a capability of sealing many holes on different occasions.

Q33.Will using OKO Puncture Free prevent the retreading of the tyres?
A.    No. OKO Puncture Free is compatible with retreading methods, cold and hot cures. OKO does not have adverse effects on tyre casings or metal tyre cords. It is recommended that tyre casings are cleaned and dried prior to collection by the "Retreading companies" or before delivery to them. OKO Puncture Free is retread friendly, easy to clean with water and does not mask the punctures and holes sealed. It should be simple for "NDT" machines to fi nd all the punctures sealed by OKO.
OKO Puncture Free has been formulated to be compatible with compounds used within a tyre. The R & D of OKO has been carried out in collaboration with "Rubber Consultants", a leading Tyre & Rubber Research Institution (formerly M.R.P.R.A., a research institution owned jointly by The Malaysian & British Governments). OKO Puncture Free does not pose any hazards or fl ammability issues for the Retreading companies either.

Q34.Does OKO Puncture Free extend the effective tyre life by assisting the correct maintenance of air pressures?
A.    YBy using OKO Puncture Free, it is possible to combat porosity which is a natural process of air migration through the tyre casing. By eliminating the possibility of driving on under – infl ated tyres, it is likely that tyres will remain in effective service for longer periods.
OKO Puncture Free will also tend to retard dry rot and casing degradation. This helps lengthen the life of the tubeless tyre casing.

Q35.Does the use of OKO Puncture Free Tyre Sealant make a Tyre warranty void?
A.    There is no legal reason under EU or USA law that should allow a Tyre manufacturer to say that their warranties are void due to the use of OKO Puncture Free Tyre Sealant, whether OFF Road or On Road OKO.
Since the inception of OKO Puncture Free, there has been no report that OKO has caused a new tyre warranty rejection or a retread casing rejection.
The composition of OKO Puncture Free is harmless to tyres and rubber and is compatible with rubber tyre components.
It is possible that on rare occasions a retail tyre distributor may take a negative stance against OKO. This is likely to be due to a historic and cultural tradition of being "anti-OKO" or ignorance of the modern technological information provided by The OKO Group.