Peel the foil backing off the patch (try not to touch the sticky side) and press it firmly over the hole. Use your thumb to apply heavy pressure from the center outward to work out any air bubbles.
If you want a repair that lasts, follow this process for a vulcanizing patch:
Spread a thin, even layer of the fluid over an area slightly larger than the patch. Wait 2–3 minutes. The fluid needs to be "tacky" or nearly dry to the touch before you apply the patch. Bicycle Inner Tube Patches
This is the most important step. Use the small square of sandpaper in your kit to roughen the area around the hole. This removes the slippery molding agents from the factory and gives the cement a textured surface to grip.
Before you start, you need to know which tool you’re using. Peel the foil backing off the patch (try
These are essentially heavy-duty stickers. They are incredibly convenient and fast, but they are generally considered temporary. Over time, the adhesive can dry out or peel, so they are best used to get you home.
These kits come with a small tube of "rubber cement." This isn't actually glue; it’s a chemical agent that melts the patch and the tube together into a single, seamless piece of rubber. Once cured, the patch is often stronger than the rest of the tube. How to Patch a Tube in 5 Steps Wait 2–3 minutes
Not every tube can be saved. Replace the tube instead of patching it if: The hole is on a seam. The damage is at the base of the valve stem.