TP50-160/2 Shaft Seals Manual

54
Pumped liquids
Shaft seals
Synthetic and mineral oils
Legend
++ = Best solution
+ = Suitable
± = Suitable under certain conditions
– = Not suitable
Liquid
Shaft seal (EN 12756)
Rotating face:
Stationary seat:
Secondary seal:
Spring:
Other parts:
Q
Q
E
G
G
Q
Q
V
G
G
B
Q
E
G
G
B
Q
V
G
G
B
V
E
G
G
B
V
V
G
G
U
U
E
G
G
U
U
V
G
G
B
U
E
G
G
B
U
V
G
G
Crude oil
Max. temp. [°C] 20 20 20 20
Max. conc. [%]
Suitability – ++ – ± – – – + – ±
Comments
Explosion hazard; insoluble in water; double shaft seal recommended; risk of solid particles
in liquid.
Hydraulic oil,
mineral-oil-based
Max. temp. [°C] 90 100 90 90 100
Max. conc. [%]
Suitability – + – ++ – + – + – ++
Comments
Insoluble in water; double shaft seal recommended at temperatures above +60°C; EPDM
required for synthetic hydraulic oil.
Motor oil
Max. temp. [°C] 90 120 120 90 120
Max. conc. [%]
Suitability – + – ++ – ++ – + – ++
Comments Insoluble in water.
Silicone oil
Max. temp. [°C] 90 90 100 140 90 90 90 90 100 140
Max. conc. [%] 100 100 100 100 100 100 100 100 100 100
Suitability + + + ++ + + + + + ++
Comments
Tar oil
Max. temp. [°C] 90 140 90 90 140
Max. conc. [%]
Suitability – + – ++ – + – + – ++
Comments
Shaft seal with flush/double shaft seal recommended at temperatures above +40°C;
depending on the hydrocarbon composition of the tar oil, the use of FFKM (Kalrez
®) may
be required.
Vaseline oil
Max. temp. [°C] 90 125 90 90 125
Max. conc. [%]
Suitability – ++ – ± – ± – ++ – ±
Comments Insoluble in water; risk of solid particles in liquid.