The standard describes rotating mechanical seals of carbon and stainless steel for use on for agitator shafts
DIN 28138-1:2006 Referenced Document
DIN 28136-1 Agitator vessels - Part 1: Principal dimensions
DIN 28138-3 Rotating mechanical seals for agitator shafts - Part 3: Connections for barries fluids, cooling, control and mounting and designation system for rotating mechanical seals
DIN 28141 Connecting flanges for vessels and process apparatus of non-alloy and stainless steel
DIN 28154 Shaft end for carbon and stainless steel agitators, for rotating mechanical seals - Dimensions*, 2021-06-01 Update
DIN 28161 Requirements on agitator drives - Agitator speed and direction, bearing application running accuracy, dis-mounting space for shaft seal*, 2006-12-01 Update
DIN 28138-1:2006 history
2006DIN 28138-1:2006-06 Rotating mechanical seals for agitator shafts - Part 1: Carbon or stainless steel - Operating data, assembly dimensions / Note: Applies in conjunction with DIN 28138-3 (2006-06).
2006DIN 28138-1:2006 Rotating mechanical seals for agitator shafts - Part 1: Carbon or stainless steel - Operating data, assembly dimensions
1970DIN 28138-1:1983 Rotating mechanical seals for agitator shafts - Part 1: Carbon or stainless steel - Operating data, assembly dimensions