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Code: 41138/500
Liquid Patch for use to repair or preventing punctures - 500ml bottle.

The liquid patch. Works fast and reliably. Doc Blue seals holes in tubes, tubulars or tubeless systems. Use for repair or preventing punctures. Puncture protection liquids have been around for a long time, but all existing products were unable to meet Schalbe's demanding standards. Doc Blue combines several different principles and is therefore much more effective.  Finally, now there is a simple and effective solution for puncture repair and prevention in tubeless systems and tubulars


  • Approx. 50 ml per tire.
  • For large volume tires (width 57mm or more) increase the dose to 75 ml.
  • 25 ml is sufficient for racing cycle tyres.
  • Ensures effective puncture protection for around 3 months.
  • Punctures are sealed automatically while riding.
  • Doc Blue is not intended to seal large holes caused by cuts or bursts.
This kit is great - contains the big 500ml bottle of sealant, plus a 60ml bottle to measure the 'dose' into the tyres and a good quality metal valve core removal tool - great kit, excellent value and Merlin fast service - what's not to like ?