WBV.PU.002.EN VX136Q V2.0
5.2 Storage
Complete pumps, cartridge mechanical seals, individual O-rings and seal components
If not stored and handled properly, the physical characteristics of products made of rubber may change.
Possible consequences include excessive hardening, softening, lasting deformation, peeling, cracking or
other surface damage.
Long-term storage is possible under the following conditions (longer than 6 months to a maximum of 5
years):
• The storage area should be dry (relative humidity under 65%) and the temperature should be between
5 °C and 30 °C.
• The pump chamber can be sealed with a preservative that is compatible with the material of the lobes
and gaskets.
• The products should be protected against light, especially direct sunlight and strong artificial light with
a high ultraviolet component.
After a storage period of five years or more and before start-up we recommend:
• Checking and renewing (if necessary) all wetted gaskets and lobes
• Changing the gear oil and the buffer or quenching fluid
For pumps with a mechanical seal that has the mating materials SiC-SiC, the shaft must be turned (at least
one revolution) every two months so that the sealing surfaces of the mechanical seal rings do not stick
together.
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