Old 11-22-21, 07:20 AM
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simplex1
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Originally Posted by Andrew R Stewart View Post
The OP might try to figure out how/why the non sealant tubes went flat before doing anything more. ...
Manufacturing defects. A multitude of microscopic unpenetrated holes, visible with a magnifying glass, on the exterior surface of the inflated tube. One of these holes becomes a through hole and the tube starts losing pressure. These tubes can be fixed, to a certain extent, with patches that covers the entire area of microscopic holes. One such patched tube lasted about 2 years, in my case.
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