• What's the recommended sealant? 700x40mm tyres.

    I've got stans is that good? Also does sealant go off, as I've one orange sealant that's a year old.

  • I've got Stans in a bottle that's well over a year old and it's fine

    I suspect you wear out tyres long before the sealant gets a chance to dry out in them :-)

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