Product Overview

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RELIABILITY
With unfailing attention to reliability,
the Grundfos engineers have designed
an innovative cartridge seal that can be
replaced within minutes.
And that is just one of the remarkable
benefits it offers.
The cartridge design allows you to replace the seal in minutes
– without special tools and without dismantling the pump.
Unique cartridge seal design
The CR deserves an outstanding seal. So do you. The seal used
in the CR line combines the best features of standard seals,
wrapped up in an ingenious cartridge design that provides
unique advantages. All of these ensure extra reliability.
The durable seal is made from hardwearing materials which
prevent downtime and prolong the lifetime of the seal. All
axial movement has been eliminated, preventing wear of the
shaft and rubber parts – a typical problem area for traditional
seals. The cartridge seal is a balanced type seal, a fact which
makes it less insensitive to pressure.
We know, however, that even the best of materials are not
necessarily enough to guarantee success in real life. That is
why the innovative team at Grundfos set out to eliminate
the small, yet crucial, factors that can have a negative im-
pact on pump reliability. Many of these have to do with
handling, assembly and service.
Safe and easy handling
The peerless cartridge design ensures that the seal compo-
nents will never be assembled wrongly, the spring will never
be incorrectly preloaded, and that sensitive surfaces will
never be subjected to greasy fingers or dirt. All these factors
are common causes of short seal lifetimes in other pumps.
The cartridge design also enables rapid replacement when
the seal ultimately does need changing after a long period
of service. All in all, downtime is minimised. Naturally, this
translates into significant savings for your business.