FX 4 Stage Pump Grease

New to PCP so looking for advice for the proper grease to keep the main (outside) pump shaft lubricated. The grease listed in the manual doesn't seem available in the US and the second option seems a little bit generic for what the seals may need on this type of pump. Any thoughts from those that know would be greatly appreciated. 

exsquid

Larry
 
Plumbers 100% silicone grease. A small amount should be around $6-$8 in a hardware store.

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