Water pump mechanical ceramic-graphite seal 155-25, with a conical spring, fit on the shaft 25 mm, height 37~38 mm, stationary ceramic ring (in elastic ring) diameter 38 mm, total height with ring 46 mm, compatible with some industrial pumps
On shaft 25 mm
For pump Gnome 4 kW
Stationary ring diameter 38 mm
Length of spring part 38
Total height with ring 47 mm