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Is there a recommended maintenance schedule for replacing or lubricating these O-rings? I'm guessing that most owners of waterproof handheld radios are more 'h

• rolph 4y ago
  depends on materials and environment, most people can fingernail them out and push a new one in. they can vary from self destruct, to immortal service life depending on material, and use.
• lb1lf 4y ago
  Having a number of portable V/UHF radios, GPS receivers and assorted other bits of outdoor electronic gear, I have had a tiny bit of acid-free vaseline on any gasket or O-ring I could find annually. Has worked a charm so far. (With today's rubber being what it is, I guess I could safely at least double that interval - but it only takes a few minutes, and the vaseline is effectively free, so...