take the shaft and body when you go to get lipseals.
the oil seal
id is slightly larger as the shaft has a shoulder on it.
automotive lipseals,these will come with mild steel
springs in them,which is fine for the oil seal
the lip seal for the salt water
side you will either need to get one with a stainless spring in it,or take out the spring and use an oring in place of the spring.
it might be an idea to replace the bearing race
if it is atall worn,but you will need a press to get them on or off.
use light emery paper to clean up the shaft.
nb!! !when refitting the lip seals the spring faces inwards,ie towards the impellor,or towards the bearings.
you also need to remove the keyway to slide them on
have fun,told you it was easy!!!!!!!!