Right that's what I'd assume but I haven't gotten a yes or no if they were included or not. Funny something that simple (coupled with the month longer than expected to complete the work) has me really pissed off add in the 3 day delay from when I was told my parts were shipped out to when they were actually shipped out. I'm beyond frustrated and beyond pissed off. This is my rant sorry. So lets say hypothetically they weren't included, anyway I could order them wothout having my head to measure diameter? And if so where do the best o rings come from?