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Recent content by umrchi

  1. umrchi

    Gasket Contact Pressure for Water Tight Design

    Thanks unclesyd
  2. umrchi

    Gasket Contact Pressure for Water Tight Design

    @IRstuff: The watch has an intercom system and some other voice reminder functions, so the rechargeable battery, or the battery as of today's need to be recharged/replaced somewhere between 3mo to 6mo, depending on actual usage. I do worry about the situation you mentioned, and we are still...
  3. umrchi

    Gasket Contact Pressure for Water Tight Design

    @HDS: I find it now and I think I can actually live with it without knowing the actual contact pressure between the seal and the back lid. Thanks.
  4. umrchi

    Gasket Contact Pressure for Water Tight Design

    @HDS: Thanks for the tips. I have referred to parker O-ring Handbook page 4-18 for face sealing for the design. It is just not knowing the exact contact pressure getting me nervous. May be I just worry about too much as long as I follow the hand book.
  5. umrchi

    Gasket Contact Pressure for Water Tight Design

    Thanks gerardl. The watch water tight design was previously proven and now there a rechargeable battery is added to the design so the back lid is being put on and off more often. That comes down to a risk that the user may not tighten the back lid far enough to cause water leak. So I need to...
  6. umrchi

    Gasket Contact Pressure for Water Tight Design

    I came across a question about designing a resin gasket for a water proof watch, and I have a question about it. Does anyone know how I can get how much contact pressure between the gasket and the watch back cover is needed so that the watch is water-proof under certain hydrostatic pressure...
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