The durability of the components of the cleaning connection (sealing disc,
support sleeve, PTFE hose) is dependent on the style, pressure and temperature
of the required medium.
Durability of the cleaning connection
Medium
Max pressure
Temperature
[bar]
[psi]
[°C]
[°F]
Water
6
87
95
203
5% Nitric Acid
6
87
60
140
3% Sulfuric Acid
6
87
60
140
5% Nitric Acid
6
87
85
185
Steam
3
42
130
266
5.4
Resistance of Sealing Materials
The resistance of sealing materials depends on the type and temperature of the
medium conveyed. The exposure time can adversely affect the service life of the
seals. The sealing materials comply with the regulations of FDA 21 CFR
177.2600 or FDA 21 CFR 177.1550.
Resistance:
•
+ = good resistance
•
o = reduced resistance
•
- = no resistance
Sealing resistance table
Medium
Temperature
Gasket material
(general operating temperature)
EPDM
-40...+135°C
(-40...275°F)
FKM
-10...+200 °C
(+14...+392°F)
HNBR
-25...+140 °C
(-13...+284°F)
Caustics up to
3%
up to 80 °C
(176°F)
+
o
+
Caustics up to
5%
up to 40 °C
(104°F)
+
o
o
Caustics up to
5%
up to 80 °C
(176°F)
+
–
–
Caustics at
more than 5%
o
–
–
Inorganic acids
up to 3%
up to 80 °C
(176°F)
+
+
+
Technical data
Resistance of Sealing Materials
430BAL008451EN_2
26
24.10.2017
