Cessna 120-140 Association

Does anybody know where I could get the o rings and u cup to rebuild my Scott brake master cylinder?
Thanks,
Brent

Univair.

If your cylinder is original equipment, searching "brake master cylinder" may help zero in on what's needed, then Univair or Spruce or others can supply. In looking back a bit there's this related post by one of our Moderators: "AN6227-7 or MS28775-012 (o-ring). The cylinder is a very simple design and the o-ring is the only wear part. There is a little pin that cocks the o-ring at the top of the stroke to allow fluid in and out of the reservoir. The o-ring takes a set .." Hope that'll help. Mac

Thanks for the info guys.

The original master cylinders are Goodyear, not Scott.