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Text version of the page
KRACHT GmbH · Gewerbestr. 20 · 58791 Werdohl, Germany · fon +49(0)23 92/935-0 · fax +49(0)23 92/935 209 · mail info@kracht.eu · web www.kracht.eu 9
Transfer Gear Pumps KF 4...112
Shaft End Seals
Sealing material Pressure Fluid temperature
suction side *
bar °C °F
Pump with single rotary shaft lip NBR -- 0.4...1.0 -- 10...90 14...194
FKM max. 750 1/min -- 0.4...6.0
max. 1000 1/min -- 0.4...5.0
max. 1500 1/min -- 0.4...4.0 -- 10...150 14...302
max. 2000 1/min -- 0.4...3.0
max. 3000 1/min -- 0.4...2.0
FKM (low temperature) -- 0.4...0.5 -- 30**...150 -- 22**...302
EPDM -- 0.4...0.5 -- 10...120 14...248
PTFE -- 0.4...2.0 -- 10...200 14...392
Pump with outboard bearing NBR -- 0.4...1.0 -- 10...90 14...194
and single rotary shaft lip FKM max. 750 1/min -- 0.4...6.0
max. 1000 1/min -- 0.4...5.0
max. 1500 1/min -- 0.4...4.0 -- 10...150 14...302
max. 2000 1/min -- 0.4...3.0
max. 3000 1/min -- 0.4...2.0
PTFE -- 0.4...2.0 -- 10...200 14...392
NBR -- 0.4...1.0 -- 10...90 14...194
FKM max. 750 1/min -- 0.4...6.0
max. 1000 1/min -- 0.4...5.0
max. 1500 1/min -- 0.4...4.0 -- 10...150 14...302
max. 2000 1/min -- 0.4...3.0
max. 3000 1/min -- 0.4...2.0
PTFE -- 0.4...2.0 -- 10...200 14...392
NBR -- 0.9...0.2 -- 10...90 14...194
FKM -- 0.9...0.2 -- 10...150 14...302
PTFE -- 0.9...0.2 -- 10...200 14...392
NBR -- 0.9...1.0 -- 10...90 14...194
FKM max. 750 1/min -- 0.9...6.0
max. 1000 1/min -- 0.9...5.0
max. 1500 1/min -- 0.9...4.0 -- 10...150 14...302
max. 2000 1/min -- 0.9...3.0
max. 3000 1/min -- 0.9...2.0
Pump with mechanical seal FKM -- 0.4...10.0 -- 10...150 14...302
PTFE -- 0.4...10.0 -- 10...200 14...392
EPDM -- 0.4...10.0 -- 10...120 14...248
Pump with mechanical seal and FKM -- 0.4...10.0 -- 10...150 14...302
connection borehole for liquid seal
(quench)
Pump with double rotary shaft seal
for vacuum operation with
connection borehole for liquid seal
(quench)
Pump with triple rotary shaft seal
for vacuum and normal operation
with connection borehole for
liquid seal (quench)
Pump with double rotary shaft seal
with connection borehole
for liquid seal (quench)
Speed: 200 – 3000 1/min
The indicated maximum values are dependent
upon the remaining working conditions.
In case of universal devices, pay attention to limitation of Pe min.
Other sealing materials on request.
** short term during start-up status: -- 0.6 bar
** only in connection with housing and
cover material EN-GJS-400 (GGG 40)