Putting a carb kit in my 67 98 Qjet. Pulled the air horn off and tipped the carb over to dump out the remaining fuel. Two parts fell out. An arm i know where it goes, and this seal, which i dont know where it came from. Thanks for any help.

 

Power piston seal or choke housing to float bowl seal.
Did you find the same part in the kit?
The instructions exploded view should show these parts and where they go.

 

What year carb ? That looks like an accelerator pump seal.

 

It looks like the choke shaft seal as mentioned. Could you post a picture with it next to a measure or coin for size reference?

 

It looks like we're all guessing because there is no scale in that photo...

 

Agree, and perhaps capturing an image in focus would assist.