Where is this washer / retainer clip from please? Found Rear seat / boot area

[Campervanpup21]

Just back from 5 nights in Norfolk (Happisburgh and Wells), and giving Vinnie a thorough interior clean, when I found this washer / retaining clip in the boot area (please see photo with highlighted area and a photo of my find!).

Anyone able to identify where it may be from at all please? Seat is sticking at times when we try to pull it forward and latch isn’t catching when at front position - could this be the reason?

No other issues that we are having nor that we can think it’s from anything that we have put in the boot - (2 x chairs / side panels / utility tent / ports potti & really useful box)

Thanks in advance for club members knowledge & wisdom.

 

[scottk]

It’s a circlip but I have no idea where it’s from.

 

[Meoncoast]

It looks very oily. Could it have come from inside the van, possibly stuck to the bottom of a shoe and brought in?

 

[marchugo]

Is it an anti-rattle clip in the awning, to avoid rattling of the awning legs after you wind in the awning? There are two of them in the awning case, so have look if the other one is still up there. The T6 has a different version, this looks like T5.

Regards from Amsterdam,

Marc.