Magic Milk Tubeless Original sealant bottle — front view

Magic Milk Tubeless Original sealant in use — MTB and gravel tubeless setups

Magic Milk Tubeless Original sealant bottle — back view

Magic Milk Tubeless Original sealant — full bottle range

Magic Milk Tubeless Original sealant bottle — studio product photography

Magic Milk Tubeless Original

Q: How much sealant do I need per tyre?

26" MTB 60-80ml. 27,5" MTB 80-100ml. 29" MTB 100-120ml.

🇬🇧 Made in the UK

£4.80

The entry point to tubeless done properly. Tubeless Original uses a synthetic latex formula that coats the full inner tyre, seals the bead-to-rim gap, and handles punctures up to 6 mm. No ammonia. No natural latex. CO2 and foam insert compatible.

Size: 65ml

Quantity:

Product Features

Clings to the whole inner tyre
Synthetic latex — no ammonia, non-allergenic
Will not ball up — just top up and keep using
Compatible with CO2 and foam inserts
Safe for tyres and rims
Seals up to 6 mm punctures

Expect Magic Milk to stay liquid for 6+ months (hot climate: 3+) before you need to top up. For tubeless tyre systems. For MTB innertubes, use Magic Milk Innertube-Pro Hi-Fibre.

Product Description

Tubeless without the drama. Tubeless Original is the workhorse of the Magic Milk line — synthetic latex, no ammonia, non-corrosive — built for the rider who wants reliable protection across MTB, gravel, and road without paying for fibre technology they don't need. It seals punctures up to 6 mm instantly and keeps working from −20°C to +50°C. Set it, forget it, ride.

How it seals

When a puncture opens, the sealant rushes to the breach and forms a durable plug at the rim of the hole. No clumping. No dry-out under pressure. The seal holds — through your ride and the next one.

Specs

Max puncture sealed: 6 mm
Pressure range: 15–120 psi
Temperature range: −20°C to +50°C
System: tubeless — MTB, gravel, road
Non-corrosive — safe for tyres and rims
Washes off with water
Made in the UK

Why synthetic latex

Natural latex comes from rubber trees. Rubber trees come from rainforests. Magic Milk uses synthetic latex instead — same sealing performance, no deforestation. Washes off with water when you're done.

Bottle Size

65ml

The 65ml bottle of Magic Milk Tubeless Sealant is the perfect size for quick fixes when you’re out on the trail. Whether you're tackling gravel paths, enduro routes, or cross-country trails, this compact bottle fits easily into your pack or ride kit, making it ideal for topping off or filling a single tyre when you're in need. It's the true saviour when you need a quick solution on the go.

Usage Info

For use with removable-core Presta, and all Schrader valves.
Expect Magic Milk to stay liquid for 6+ months (hot climate: 3+) before you need to add more.
For Tubeless tyre systems (For MTB innertubes, use Magic Milk Hi-Fibre Innertube)

Dosage & Quantities

26" MTB 60-80ml
27,5" MTB 80-100ml
29" MTB 100-120ml

Sealant Applications

The OKO

NozzleWith the OKO Nozzle, applying the sealant is quick and easy, ensuring you get the perfect amount where it’s needed, with no mess or waste. This nozzle makes it effortless to seal punctures and get back to enjoying your ride, without any delay or fuss.

The OKO Cap

Fitted with OKO's patented Cap technology, an industry first, applying sealant has never been easier. After three years of development, the OKO Cap utilizes the latest material technogies to fit seamlessly with your valve system. In the workshop on or on the go, outfitting your tyres with bike sealant's best kept secret couldn't be easier.

The OKO Cap

Fitted with OKO's patented Cap technology, an industry first, applying sealant has never been easier. After three years of development, the OKO Cap utilizes the latest material technogies to fit seamlessly with your valve system. In the workshop on or on the go, outfitting your tyres with bikes sealant's best kept secret couldn't be easier.

The OKO Cap

Fitted with OKO's patented Cap technology, an industry first, applying sealant has never been easier. After three years of development, the OKO Cap utilizes the latest material technogies to fit seamlessly with your valve system. In the workshop on or on the go, outfitting your tyres with bike sealant's best kept secret couldn't be easier.

The OKO Injector

To make application even easier and more efficient, the OKO Injector system (sold separately) is the perfect tool for larger quantities. This injector allows for quick, precise application with minimal mess, meaning you can top up tyres in seconds, ensuring a seamless experience for both technicians and riders. The easy-to-use injector makes it simple to apply the right amount of sealant each time, saving time and reducing waste, so you can keep your operations smooth and efficient.

Frequently asked questions

How much sealant do I need per tyre?

26" MTB 60-80ml
27,5" MTB 80-100ml
29" MTB 100-120ml

How do I check if the sealant is still active?

Remove the valve core and dip a thin probe or zip-tie into the tyre. Wet means you've still got working sealant; dry or barely damp means top up. You can also rotate the wheel slowly and listen — moving sealant inside is still liquid.

Which valves does it work with?

Removable-core Presta valves and all Schrader valves. Don't use it with Presta valves that have a non-removable core.

Is it CO2 and foam-insert compatible?

Yes. Works with CO2 inflators and is compatible with foam tyre inserts (CushCore, Tannus, Vittoria Air-Liner and similar).

Can I use this in an innertube?

No — Tubeless Original is for tubeless tyre systems only. For inner tubes, use Magic Milk Innertube Original.

LONG LASTING PERFORMANCE

Tubeless Original stays liquid for 6+ months before needing a top-up — 3+ months in hot climates. It seals punctures up to 6 mm without drying out or balling up. Ride after ride, the formula keeps working. No intervention needed until the next service.

NO RAINFORESTS HARMED

Most tubeless sealants are built on natural latex — rubber trees, rainforest. This one isn't. Synthetic latex gives the same sealing performance without sourcing from old-growth forests. Washes off with water.