✅ SOLVED Ring or Seal?

[rick67]

I find these once in a while but cant figure a use. There copper, rolled into a ring, hollow, and sometimes I find bits of fiber in the seem. Most I've found are nickel sized this one a little larger.

 

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[Keith Jackson]

With you saying that you have found fibers in them in the past, it sounds like it is a grommet of some sort. Probably from some sort of tarp.

 

[Back-of-the-boat]

I have seen rings like those from curtains.

 

[vhs07]

Spark plug washer?

 

[ScubaDetector]

I find a lot in the water. I have always assumed a spark plug washer.

 

[fyrffytr1]

Could also be an oil drain pan plug crush washer.

 

[Tony in SC]

It looks like a seal. Sometimes the metal will be rolled around asbestos. They're made in all sizes. Tony

 

[rick67]

I've thought seal but never found one squashed.
I've thought drapes to.
My problem with Spark plug is I've only found them where the finds are early 1800's to late 1700's.
ScubaDetector might have something going. All I've found (20+) have been insight of big water.

 

[bradyboy]

Its a washer that was used in brass water fittings, like water meter connections
tighten the nut connection and the washer compresses flat to create a water tight seal
Brady

 

[DCMatt]

Read this:

http://www.treasurenet.com/forums/what/260548-copper-ring-things-always-turn-up-old-sites.html

 

[mooncusser]

correct...copper drain plug washer , we stock them at our garages

 

[rick67]

Read this:

http://www.treasurenet.com/forums/what/260548-copper-ring-things-always-turn-up-old-sites.html

Them two are always fighting.

I'm going with "Nipple Ring" SOLVED!