Robert, are you talking about the CO2 valve seal ?
i believe thats the same seal on the 1077 , 2240, and a few others.. should be easy to find in some parts diagrams
I have the silver one coming. Here is the owners manual and parts list for it. It should shoot bbs 480fps and pellets around 420fps to 430fps.https://support.crosman.com/hc/en-us/articles/203360734-AAII-Owner-s-Manual-EVP-1991-1996-
RobertMcC, where did you find your new end seals? I have several projects that need them and not sure where to start looking?Thanks Randall