Mystery part found in my sump

[Klyle]

Does anyone recognize this rubber washer from a tunze comline skimmer? I found it at the bottom of my sump and don’t know where else it could have came from. I really don’t want to take this skimmer apart unless I have to!!

 

[hdsoftail1065]

Looks exactly like the O rings that came with my elfulx wave pumps.

 

[Klyle]

Ha! That must be it...not sure how it made it to the sump but seeing as how I sent them back the day after i got them I'll be tossing the o ring. Exchanged for icecap 2k which I hated the lack of any buttons so I exchanged the icecap for the Nero5...loving it! Thanks!!