Need advice on FX hand pump lube

[slow_runner]

The FX hand pump is due a service. It was bought second hand some time back without instructions.
We have the schematic AND the digital photos
Courtesy of Airguns of Arizona, the manual speaks of Fuchs Renolit RHF-1 grease.
So, onto the the local FX agency; no joy there for spares or lube.
Next, I rang Fuchs Lubricants NZ; they will be able to help, right?
No joy there either, in fact they couldn't tell me anything about it at all.
I have rang around the place and no joy. What is this mysterious Fuchs Renolit RHF-1 that no one appears to be aware of, or have cross reference to?

We are not at our wits end yet but before that time arrives, has anyone got the name of a compatible grease that will function as the recommended grease from FX, or better?

Cheers.