TP50-40/4 Shaft Seals Manual

31
Types of shaft seals
Shaft seals
Grundfos type G
Grundfos type G seal is defined as an unbalanced O-
ring seal with a rubber bellows.
Description/features
• Especially suitable for anti-freeze liquids or liquids
containing large quantities of solid or precipitated
particles.
• Suitable for lime- and sludge-containing liquids
where there is a risk of deposits and seizure.
• Resists fretting (wear corrosion) which occurs when
an O-ring wears the protective oxide film of a stain-
less steel shaft.
• The shaft seal is independent of the direction of ro-
tation.
Fig. 43
Type G seal
Application profiles
The type G seal has the following application profile:
• SiC/SiC.
Suitability
TM02 7099 2603
Suitable
Suitable under
certain
conditions
Not
suitable
Alkaline liquids
Acid liquids
Dry running
Solid particles in liquid
Precipitating/lime-
containing liquids
Anti-freeze liquids