Hiball, thank you for the tip. The Model 303HC turns out to be a 50MM ram like mine. I measured 2". I found similar jacks in Blackhawk and Nike.
Lazzar's shows both seal kits.
I have one WATCO 1 1/2 Ton floor jack that needs a seal kit. The previous owner overloaded it. That is the easy one.
My second jack has no markings or I D. It looks just like the WATCO but bigger. It has a 2" ram. Can anyone ID a seal kit for the big one. I stopped at HF and found a bottle jack...