TP80-240/2 Shaft Seals Manual

52
Pumped liquids
Shaft seals
Coolants
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
Calcium chloride
CaCl
2
Max. temp. [°C] 5 5 5 5
Max. conc. [%] 35 35 35 35
Suitability ++ + – – – – ++ + – –
Comments
Shaft seal with flush/double shaft seal may be required if the liquid contains additives;
presence of oxygen entails risk of pitting on stainless steel parts.
Ethanol (ethyl alcohol)
C
2
H
5
OH
Max. temp. [°C] 75 75 75
Max. conc. [%] 100 100 100
Suitability + + ++ – + – – – ++ –
Comments
Explosion hazard; highly flammable; double shaft seal may be required; flash point: +12°C.
Seal face needs to be SiC
G
.
Ethylene glycol
(1.2-ethanediol)
CH
2
OHCH
2
OH
Max. temp. [°C] 90 60 90 60
Max. conc. [%] 50 50 50 50
Suitability ++ + – – – – ++ + – –
Comments Shaft seal with flush/double shaft seal may be required if the liquid contains additives.
Glycerine (glycerol)
C
3
H
5
(OH)
3
Max. temp. [°C] 80 80 80 80 80 80 80 80 80 80
Max. conc. [%] 50 50 50 50 50 50 50 50 50 50
Suitability ++ + ± ± ± ± ++ + ± ±
Comments Shaft seal with flush/double shaft seal may be required if the liquid contains additives.
Methanol
(methyl alcohol)
CH
3
OH
Max. temp. [°C] 65 65 65
Max. conc. [%] 100 100 100
Suitability + + ++ – + – – – ++ –
Comments
Explosion hazard; highly flammable; double shaft seal may be required; flash point: +11°C.
Seal face needs to be SiC
G
.
Potassium carbonate
K
2
CO
3
Max. temp. [°C] 90 20 90 20
Max. conc. [%] 40 2 40 2
Suitability ++ + – – – – ++ + – –
Comments
Propylene glycol
(1.2-propanediol)
CH
2
OHCHOHCH
3
Max. temp. [°C] 90 60 90 60
Max. conc. [%] 50 50 50 50
Suitability ++ + – – – – ++ + – –
Comments
Sodium chloride
NaCl
Max. temp. [°C] 5 5 5 5
Max. conc. [%] 30 30 30 30
Suitability ++ + – – – – ++ + – –
Comments
Shaft seal with flush/double shaft seal may be required if the liquid contains additives;
presence of oxygen entails risk of pitting on stainless steel parts.