New Pump

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I am no expert but I just want to share my findings from my hand pumps.

After looking inside my hand pumps, i found almost no metal to metal contacts. In fact too many orings to keep up. 

If one can't find a trusty silicone grease, just get a small tube of hill grease (a bit pricey) and save yourself a headache. It should last a while and use a VERY thin coat on shaft when needed.

I like grease better than oil because oil does not stick like NLGI2 type silicone grease. Hill grease, molykote , diver grease and etc.

And Non petroleum +1

Also a decent moisture filter would help.

Hope this helped