Grundfos NB - Shaft Seals; Electrical Data

13.1.8 Shaft seals
The operating range of the seals is described for two
main applications: Pumping of water or pumping of
coolants.
Seals with a temperature range of 0 °C and up are
mainly used for pumping water, while seals for
temperatures below 0 °C are mainly intended for
coolants.
We do not recommend that you operate
the pump at maximum temperature and
maximum pressure at the same time as
the seal life will be reduced and periodic
noise will occur.
Shaft seal diameter [mm] 28, 38 48 55 60
Shaft seal type
Seal
faces
Rubber Code Temperature range
Max. pressure
[bar]
Bellows seal, type B,
unbalanced
AQ
1
EPDM BAQE 0-120 °C 16 16 16 16
BQ
1
EPDM BBQE 0-120 °C 16 16 16 16
BQ
1
FKM BBQV 0-90 °C 16 16 16 16
Q
7
Q
7
EPDM BQQE -25 to +120 °C 16 16 16 16
Q
7
Q
7
FKM BQQV -10 to +90 °C 16 16 16 16
O-ring seal, type A,
unbalanced
Q
1
A
EPDM AQAE 0-120 °C 16 16 16 16
Q
1
A
FKM AQAV 0-90 °C 16 16 16 16
Q
1
Q
1
EPDM AQQE -25 to +90 °C 16 16 16 16
Q
1
Q
1
FKM AQQV -10 to +90 °C 16 16 16 16
Q
1
Q
1
HNBR AQQX -15 to +90 °C 16 16 16 16
Q
1
Q
1
FFKM AQQK 0-90 °C 16 16 16 16
O-ring seal, type D, balanced
AQ
1
FXM DAQF 0-140 °C 25 25 25 25
Q
6
Q
6
EPDM DQQE -20 to +120 °C 25 25 25 25
Q
6
Q
6
FKM DQQV -10 to +90 °C 25 25 25 25
Q
6
Q
6
HNBR DQQX -15 to +120 °C 25 25 25 25
Q
6
Q
6
FFKM DQQK 0-120 °C 25 25 25 25
13.2 Electrical data
See the motor nameplate.
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English (GB)