Molybdenum disulfide beats graphite - no, best lubricant for the plastic pump parts and the synthetic rubber gaskets is silicone oil, the same stuff that's recommended for keeping drysuit wrist, ankle and neck seals in good shape - http://www.mcnett.com/m-essentials/seal-saver#24116.NYKiter wrote: ...you might try graphite...
Thanks, alot. I got it, so storing with the handle all the way up.GregK wrote:Molybdenum disulfide beats graphite - no, best lubricant for the plastic pump parts and the synthetic rubber gaskets is silicone oil, the same stuff that's recommended for keeping drysuit wrist, ankle and neck seals in good shape - http://www.mcnett.com/m-essentials/seal-saver#24116.NYKiter wrote: ...you might try graphite...
If your poor performing pump is one of the tall ones and you store it with the handle all the way down, then the seals on the piston are at their maximum compression from the pump cylinder. To injection mold the pump cyclinder there is about a 1-degree draft angle on the bore, making the diameter at the top bigger than at the bottom. Storing your pump with the handle all the way down compresses the seals on the pistons, so they barely seal at the top of the cylinder.
Store your pump with the handle fully out and the seals will come back, you'll get more air flow when the psiton is at the top of the cylinder.
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