[TR] Fuel pump oil seal

[Angelo Graham]

Hello list:
Not sure if this was addressed in earlier posts.
Asking about the oil seal in the body of the fuel pump for the TR2-4 
range. All the rebuild kits I have do not include this seal. Just 
wondering if the seal is available from any source or how necessary 
it really is?
I noticed that the rebuild kits that TRF carries have this seal 
included, but was hoping I wouldn't have to get yet another rebuild 
kit just for the seal.
Any experiences with or without this seal?
Thanks in advance.

Angelo Graham