The sealant works by remaining liquid in the tyre during normal use and then when a puncture occurs a small amount of the sealant is forced by the pressure within the tyre into the puncture where it solidifies forming a permanent latex "plug". One application of the sealant is able to provide protection against multiple punctures of up to 1/4".
|All you need to puncture proof your tubes!|
|Schwalbe Presta Valve with Core Removed|
|Applying the sealant with a syringe.|
Well that's the theory anyway! I look forward to providing a long term test report in due course.