here is some info from the pin repair site on the belts for f-14 tomcat
Question: On My F-14, I need a new rubber belt to drive the rotating beacon lights. Where can I get this?
Answer: This rubber drive belt is available from any local John Deere tractor store! Just ask for part number H85996, cost is about $2.00.
i havent tried these but it may be worth a try. i ordered some from marco and they fell apart within three months. hope this helps!!