I just removed seal "National 6840S" from the front 10" drums of the '65 Formula S. I see Autozone has another listed for 10" drums (center choice in photo). Just wondering what the differences are and what is the best replacement for my application? Thank you.
Cant speak to the quality of Autozone house brand Duralast. I’d prefer a National or Chicago. Is there any other parts store that stocks or can order National or Chicago?
The 6840S is the correct one. The 8121S is mostly B,C, and E, body with 11" brakes.....depending on year.
