SANY Hydraulic Cylinder Seal Kit

Seal kit matching for SANY boom, arm, bucket and outrigger cylinders. Seal kits are identified by the cylinder, not by the machine: bore diameter, rod diameter and the seal groove arrangement decide the kit, and a single excavator carries boom, arm and bucket cylinders in three different sizes, while a truck crane adds outrigger and telescoping cylinders again different. This listing spans a 21.9 t excavator, a 35 to 38.1 t excavator and a 25 t class truck crane, which have nothing in common at cylinder level. Measure the rod diameter and the bore and send those with the machine serial number. Two things worth knowing: a cylinder that has been resealed twice and still leaks usually has a scored rod or a worn gland bore, and no seal kit will fix that; and it is better to buy the kit for the cylinder you are opening than a set for the machine, because a cylinder that is not leaking is best left closed.