Anyone know what these rings are for?

[paperdesk]

I got these with a bunch of gear I picked up from a retired diver. Any idea what they are for?
https://goo.gl/photos/ZdwwwXS6Mm7E7ENZ7

 

[paperdesk]

I forgot how to add photos.

 

[Ghetto Diver]

The clear tube is from an old capillary depth gauge.
I have one and will post a pic in a bit


ETA, meh quicker to post a link
This is another SCUBAPRO capilla

 

[paperdesk]

IMG_20160526_225512801

• paperdesk
• Oct 5, 2016

I uploaded to gallery, this should work now!

 

[paperdesk]

Interesting! I think what I have is different though. It's about 1/2" tubing and 7 or 8 inches across.

 

[Ghetto Diver]

Um, ok. Couldn't tell the size in the pic.
I doubt its from a capillary gage then, unless he had vision issues and diy'ed one 8-0

 

[tech_diver]

I use a ring like the clear tube to roll over the neck seal on my drysuit between dives to hold it open. After a dive I put the ring on my neck then roll the neck seal over it, strictly a comfort issue when I'm not in the water and don't want to get out of my drysuit.

but... it could be anything

 

[paperdesk]

Interesting idea! QUOTE="tech_diver, post: 7796610, member: 59035"]I use a ring like the clear tube to roll over the neck seal on my drysuit between dives to hold it open. After a dive I put the ring on my neck then roll the neck seal over it, strictly a comfort issue when I'm not in the water and don't want to get out of my drysuit.

but... it could be anything[/QUOTE]

 

[AfterDark]

Sure looks like a capillary tube from to me. Submerge it and see if water enters it. That black piece is the orifice.

 

[paperdesk]

I think the prize goes to tech-diver. I'm sure that it's a neck seal ring, and is almost identical to the one shown half way down the following link: Stohlquist bpod T dry suit questions

I'm definitely going to try this out next time I'm in my suit!