No gas cap, any alternatives?

[Fj1100 Rebuild project]

I bought my fj1100 with no gas cap and didn't realize it would be this hard to find one, anyone know of a alternative of some generic cap that will work at least temporarily? I've pretty much given up on trying to find one used

[Waiex191]

https://www.rpmracingca.com/proddetail.asp?prod=KeylessFuelCap

Stock cap listed but out of stock.
https://www.rpmracingca.com/proddetail.asp?prod=1200FuelCapGascap

Chinesium one on eBay that claims it fits:
https://www.ebay.com/itm/115692532322?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=3kKIsm8DS0W&sssrc=4429486&ssuid=HROLFwkuTTm&var=&widget_ver=artemis&media=COPY

[RPM - Robert]

The 1100 caps are different than the 1200 caps so none of those will work for the 1100 tank.

[FJmonkey]

I think that cap was used on other Yamaha models, possibly a Seca. Finding a used cap is more likely your success.