Grundfos water pump mechanical seal 155-12 on shaft 12 mm

Grundfos Hydro Jet (Hydrojet) JP5, JP6 B-B-CVBP pump mechanical spring seal 155-12 on shaft Ø12 mm, with conical spring, stationary ring diameter Ø20 mm, total height with ring 32 mm

On shaft 12 mm
Outer diameter 23 mm
Length in free state 25 mm
Diameter of fixed ring (in rubber) 20 mm
Total height with ring 31~32 mm