Buying Guide

Tubeless vs Innertube Sealant: Which One Do You Actually Need?

A range of Magic Milk tyre sealant bottles

Not all tyre sealant is the same, and the biggest mix-up is a simple one: are you running tubeless tyres or inner tubes? Each takes a different product. Pour tubeless sealant into a tube and you won't get the protection you paid for. Here's how to choose in two minutes.

Running tubeless? You want tubeless sealant

This goes straight inside a tubeless tyre and seals punctures the instant they happen.

  • Tubeless-Pro Hi-Fibre — the flagship race formula, synthetic latex with quick-seal fibres, seals holes up to 8 mm. Trusted by AON Racing and SCOTT-SRAM.
  • Tubeless Original — the reliable everyday option, seals up to 6 mm.

Still on tubes? You want innertube sealant

This goes inside the inner tube — poured in, or added through a removable-core valve — to seal slits and pinch flats from the inside.

Beyond biking

Punctures aren't just a bike problem. The same OKO know-how covers Motocross (seals up to 9 mm), Quad & ATV, and e-Scooter tyres too.

The quick decision

Tubeless tyres → a tubeless sealant. Inner tubes → an innertube sealant. Racing or want the biggest seal? Go Hi-Fibre. Everyday commuting? Original does the job. Every formula is made in the UK by OKO, with 30+ years of sealant behind it.

Still deciding? Compare the full tubeless and innertube ranges side by side.

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