oil delivery pipe washer size

[jimmybrown78]

Hey yall,
Does anyone know the size of this brass washer. I was planning on getting a new one today but left the old one at the house, don't want to drive all the way home to come all the way back to the city. The old one is cracked.

 

[jimmybrown78]

come on i know someone knows, i just need the I.D not the O.D

 

[weaselbeak]

Buy one of each, several sizes, can't cost much. It's always good in the long run to have extra stuff laying around.