Cold Vulcanizing Fundamentals

Yeah, I patch my own tubes, but not always.


A tube patched by Brett Flemming


  1. Replace provided sandpaper for 80-120 grit genuine industrial emery cloth.
  2. Buff to black rubber area larger than patch.
  3. Apply glue area larger than patch, spread quickly.
  4. Let glue dry completely, no such thing as too long, failure will occur if patch is applied to wet glue.
  5. Carefully tighten glue cap for perfect seal.
  6. Do not touch even the tiniest corner of patch, or dried glue, handle only with cellophane Once foil is removed, center on wound, lay on in rolling fashion.
  7. Most important: press on firmly, preferably with roller, but in field, use lever with tube firmly backed to press patch on… it is at that moment that cold vulcanizing is complete.


–From Brett

1 Comment

  1. garyferguson

    What about removing the cellophane. Do you leave it on or remove it? I know some Rema patches are perforated down the middle. Once the patch is on, you can stretch the tube/patch along the perforation to remove the cellophane from the middle without pulling up an edge of the patch. Do you think there is any harm in leaving the cellophane on if there is no perforation?

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