This category contains all the sets you need if you want to overhaul a brake master cylinder or master clutch cylinder yourself. The sets contain at least all the necessary rubber parts. In addition to the required rubber parts, there can also be sets with piston(s) or complete inserts. All rubbers used are resistant to DOT 3, 4 and 5 (silicone). If you are looking for a seal for LHM or mineral oil, look in the mineral seals category.