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OKO Puncture Free Bike

  The Best all-purpose tube puncture preventer
 The e-bike anti-puncture solution
 Seals holes in tubes up to 4 mm
Works on multiple punctures
Lasts the life of the tyre
Suitable for commuter, folding, urban, touring bikes – and any bike rental scheme (NEW 5 litre, and 25 litre, workshop sizes)!

• NOW APPROVED BY TUBOLITO for protection in their lightweight, durable synthetic TPU tubes – the only preventative tyre sealant to pass their tests and be recommended! 


OKO Puncture Free Bike is a water-based liquid that is able to work on both tubed and full UST tubeless tyres.

It gives peace of mind and lasting security for the tyre’s life, with a dose of 60-100ml per tyre in mainstream bikes, depending on size.

An all-purpose product for commuting, touring (and perfect for peace of mind on your e-bike).

(For ‘tubeless ready’ tyres, use a rim strip plus OKO Magic Milk™: you may see other water-based sealants claiming to be ‘tubeless’ but they will not seal porous sidewalls, and unless you have a perfect bead/rim seal they are not the answer…)

250 ml bottle deals with one large bike with some to spare: up to 20% less weight than any recognised competitor. It’s a really economical way of ensuring peace of mind, for a fraction of the cost of replacing just one tyre.

Simple fitting, using the valve core remover and Schrader valve-sized filling tube supplied in every bottle cap: or use an OKO Tyre Sealant Injector for easy, accurate measuring.

NEW 5 Litre can (including a 150ml Injector for easy dosing) for small workshop use.

25 litre drum is ideal for retailer and team service workshops: the NEW heavy-duty all-alloy drum pump is a one-time purchase and can be rinsed out again and again for repeated use in filling tyres rapidly. It uses the unique OKO Bike drum pump with adjustable dosage, plus it has Schrader and Presta screw fittings.


Not latex-based
Lasts the life of the tyre
Combats larger punctures: contains aramid fibres
Seals multiple holes
Contains corrosion inhibitors
Non Hazardous


Non Corrosive: Non Flammable: Non Hazardous (not excluded from air shipments unlike some ammonia-containing products). Washes out of the tyre if required.

NO ADVERSE AFFECT UPON TYRES OR RIMS (contains anti-corrosion agents).

WORKS WITH INNER TUBES and FULL UST TUBELESS WHEELS/TYRES, with Schrader or removable-type Presta valves.

(For serious MTB use, we recommend NEW OKO X-Treme Dirt Bike)

(For ‘Tubeless Ready’ tyres, use a rim strip and OKO Magic Milk™, which is the lightest and best sealant to seal the bead/rim gaps and the porous sidewalls).

Colour: Blue. Viscous. Low Odour.


Up to 18” 50ml
20” BMX 80ml
22-24” Junior MTB 80ml
26” MTB 100ml
700C 80-100ml
29″ MTB 120-140ml

For maximum accuracy, for easier use with removable Presta valves, and for a host of workshop uses, use the OKO Tyre Sealant Injector.

OKO Puncture Free Tariff Number: HS 3824 99 96
OKO Pressure Application Pump Tariff Number: HS 8413 20 00 90

No risk and safety labels or warnings are required since this product is not classified as hazardous under current regulations. Normal safety precautions should be taken: wear gloves and protect eyes. Rinse product off any clothes that it may be spilled upon. Keep away from children. If swallowed, see a doctor.


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