Jack repair

[Z06killinSBF]

I have one of the Summit aluminum racing jacks and the pump has failed on me. I put new o-rings (generic parts store box) and it continues to leak by. Am I supposed to have a back up ring or packing material in it? I can't seem to find a repair kit anywhere. Do you think Summit would carry one? It is leaking where the handle meets the pump.

Looks like this one...

[69stang]

I would try a quadring oring. Looks kinda square in the cross section like 4 small orings. Usually seal better than your standard oring and only a few cents more. If that don't work maybe drag the jack to your local Parker Store or other hydraulic supplies store for suggestions.