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Resistance of Sealing Materials
The resistance of sealing materials depends on the type and temperature of the medium conveyed.
The contact time can negatively 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.
Medium
Caustics up to 3%
Caustics up to 5%
Caustics up to 5%
Caustics über 5%
Anorganic
Acids up to 3%
Anorganic
Acids up to 5%
Anorganic
Acids up to 5%
Water
Steam
Steam, app. 30 min
Treibstoffe/Kohlen-
wasserstoffe
Product with a fat content
of max. 35%
Product with a fat content
of more than 35%
Oils
Gehäuseanschlüsse – VARIVENT
Housing connections – VARIVENT
Baugröße
Außendurchmesser
Size
outside diameter
29
DN 25
ISO 25
33,7
38
Temperature
Sealing material (general operating temperature)
EPDM
-40...+135°C )
-40...275°F
up to 80 °C (176°F)
good resistant
up to 40 °C (104°F)
good resistant
up to 80 °C (176°F)
good resistant
reduced service life
up to 80 °C (176°F)
good resistant
up to 80 °C (176°F)
reduced service life
up to 100 °C (212°F) not resistant
up to 80 °C (176°F)
good resistant
up to 135 °C (275°F) good resistant
up to 150 °C (302°F) good resistant
not resistant
good resistant
not resistant
not resistant
Wandstärke
wall thickness
1,5
2,0
FKM
−10...+200 °C
14...+392°F
reduced service life
reduced service life
not resistant
not resistant
good resistant
good resistant
good resistant
good resistant
reduced service life
reduced service life
good resistant
good resistant
good resistant
good resistant
-System
®
System
®
Innendurchmesser
inside diameter
26
29,7
2015-06 · Sprühreiniger IS / Sprayer IS
FFKM
-10...+230 °C
14...+446°F
good resistant
good resistant
good resistant
good resistant
good resistant
good resistant
good resistant
good resistant
reduced service life
reduced service life
good resistant
good resistant
good resistant
good resistant
Norm
DIN 11850
EN ISO 1127
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