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PLBs Can Save Your Life

Discussion in 'Training, Practices and Equipment' started by letterboy, Mar 19, 2019.

  1. outofofficebrb

    outofofficebrb HARRO HUNNAYYY

    # of Dives: 200 - 499
    Location: San Francisco, California
    2,849
    2,137
    113
    O-rings themselves are super inexpensive (pennies!) so once we have the size, material, and durometer. I'm hoping he will share the info but if not I suppose $12 for a few isn't bad if you only have to replace it yearly... I did notice that it came with A LOT of grease on the o-ring already, more so than anything I would ever put on anything else I have (lights, strobes, camera). I will report back on the functionality after diving with it compressed and tight...I have 83 dives scheduled on a trip that I am leaving on next week so it will be plenty of time to test it, use it, and provide some real feedback short of activating the PLB itself.

    I think opening it to check it every day is probably a good idea. Thanks for the suggestion.
     
  2. DandyDon

    DandyDon Old men ought to be explorers ScubaBoard Supporter

    # of Dives: 200 - 499
    Location: One kilometer high on the Texas High Plains
    48,389
    4,196
    113
    I agree. We do need to get the info on the o-rings and just buy them here.

    I would not tighten it more than snug.
     
  3. Lorenzoid

    Lorenzoid idling in neutral buoyancy

    # of Dives: 500 - 999
    Location: Atlanta, USA
    8,963
    5,438
    113
    I have a different canister, the no-longer-produced McMurdo, but my thinking has been the opposite: do not open it often because each time the friction (though presumably lessened by silicone lube) stresses the o-rings and provides an opportunity for contaminants (e.g., dust, a hair, a grain of sand) to stick to the silicone lube.
     
  4. DandyDon

    DandyDon Old men ought to be explorers ScubaBoard Supporter

    # of Dives: 200 - 499
    Location: One kilometer high on the Texas High Plains
    48,389
    4,196
    113
    I rented one of those once years ago. Heavy! I was glad to find my nylon canister.

    There's truth there, but how often do you open your camera housing? Caution & care indicated.
     
  5. outofofficebrb

    outofofficebrb HARRO HUNNAYYY

    # of Dives: 200 - 499
    Location: San Francisco, California
    2,849
    2,137
    113
    I can see the logic for both. Hmm.....
     
  6. Dan

    Dan Orca

    # of Dives: 500 - 999
    Location: Lake Jackson, Texas
    5,419
    2,990
    113
    I believe of “don’t fix if it ain’t broke”. That’s why I have a clear case & some of the UW camera cases too. All I need to do is to pull it out of my BCD pocket and see if water/ moisture gets into it. I do clean the seal surfaces and silicon grease the o-ring before putting the PLB1 in it.
     
  7. Fastmarc

    Fastmarc Just drifting along... ScubaBoard Supporter

    # of Dives: 200 - 499
    Location: Kingston, Jamaica
    1,366
    327
    83
    ... and if you don't open, how would you pick up that it might be leaking? Shake?

    Tricky...

    Edit: The clear case as above would solve this.
     
  8. -JD-

    -JD- Eclecticist ScubaBoard Supporter

    # of Dives: 50 - 99
    Location: Greater Philadelphia, PA
    358
    194
    43
    That is one of the nice things about the UK lights, they have a clear acrylic dome top. Just invert and look.
     
  9. -JD-

    -JD- Eclecticist ScubaBoard Supporter

    # of Dives: 50 - 99
    Location: Greater Philadelphia, PA
    358
    194
    43
    Vertical or circumferential compression seal if you remember?
     
  10. outofofficebrb

    outofofficebrb HARRO HUNNAYYY

    # of Dives: 200 - 499
    Location: San Francisco, California
    2,849
    2,137
    113
    If I am interpreting and understanding your question correctly, I believe it is circumferential. I can take a video of how the whole thing opens/closes, I suppose. Is that of interest?
     
    tridacna likes this.

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