23T503. up for sale is a rubber U shaped seal that fits the glass or the metal lip on the plastic bubble trim ring  on the Electric Neon clock company clocks with the  plastic bubble cover , also known by collectors as the bubble clock  and Gass station type  clocks

These do fit the design of the Cleveland bubble   

This seal is cut a bit extra long and can be trimmed to fit when installed on the seperator ring  

 
this U channel is 1/4 wide x 5/16 tall and has a slot that is about 1/16 wide , 


NOTE : We show photos in this listing that have some of the clocks these rubber seals  fit , the clocks shown are ones we restored for customers and are not part of this sale , 


What you are buying is just the rubber U shaped seal , 

Very nice new rubber seal for your project , 


Thank you for supporting a USA based small business we appreciate the business ,