How to Use Slime to Repair a Bike Tire

If you have been neglecting your bike because it has a flat and you don't know how to fix it, don't worry: Help is available. There's a permanent tire patch in a tube called Slime. You can apply it in minutes, you don't have to take the tire off the bike, and it protects your tire against further punctures. It works by seeping into the puncture, where fibers in the Slime harden to permanently seal the leak. It's easy, affordable and works in all seasons.

Things You'll Need

  • One tube of Slime
  • Bicycle floor pump
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Instructions

    • 1

      Remove the cap from the valve stem on the flat tire. Remove the cap from the tube of Slime.

    • 2

      Turn the Slime tube cap around backwards and insert it into the end of the bicycle valve stem. There is a small fork on the end of the Slime cap. Push the cap down into the stem and twist it slightly. It will drop down and lock onto the valve core.

    • 3

      Twist the Slime cap counterclockwise. It will unscrew the valve stem core. When the valve core unscrews all the way, pull it out. It looks like a small shaft with a spring around it. Set it aside in a safe place. Keep the valve core attached to the cap.

    • 4

      Screw the tube of Slime onto the top of the valve stem. When the Slime tube is screwed all the way onto the valve stem, squeeze the tube with your fingers, emptying the contents of the tube into the tire. Unscrew the empty tube and remove it.

    • 5

      Pick up the valve core, which should still be attached to the Slime cap. Insert the valve core into the valve stem and screw it back down tight with the Slime cap attachment.

      Pump up the tire with a floor pump. Ride the bike to seal the puncture.