Reference this image: these are very common to all of us, I am sure.

I see LOTS of these in 14" sizes, and 3/8" sizes, and stock the seals for both, under the following numbers:

F4TZ-9C387-A or IH #685158 are the 1/4" seals

IH #1812348 is the 3/8" seal ... Login to read more.

Files Referenced: