Mysterious o-ring

Discussion in 'Filter Wheels' started by Michael Rodruck, Jan 23, 2026.

  1. Michael Rodruck

    Michael Rodruck Cyanogen Customer

    Joined:
    May 30, 2023
    Messages:
    59
    I had opened my FW8S-ALUMA filter wheel to add some more filters, and a broken o-ring fell out. I didn't see where it came from and I'm very confused about what it went to! Any ideas? And do I need a replacement?
     

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    Michael Rodruck, Jan 23, 2026
    #1
  2. Doug

    Doug Staff Member

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    IIRC they were used as spacers in the filter slots. From the look of your wheel photo, I think there are some still installed.
     
    Doug, Jan 23, 2026
    #2
  3. Michael Rodruck

    Michael Rodruck Cyanogen Customer

    Joined:
    May 30, 2023
    Messages:
    59
    I thought that too, but this o-ring is like twice as thick as the other ones in there.
     
    Michael Rodruck, Jan 23, 2026
    #3
  4. Doug

    Doug Staff Member

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    The shipping kit included 8 O-rings, size -027. There were no other O-rings in the wheel or the shipping kit.

    No idea what that is!
     
    Doug, Jan 23, 2026
    #4

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