No longer available...
The SeaLand 751/752 toilets have been out of production for 20 years....no parts or kits for it have been available for 10 years. Jabsco offered a "universal" rebuild kit that fit their (also obsolete) Brydon toilet and some other obsolete Jabsco models and the SeaLand toilets...but they discontinued it about 3 years ago.So I'm afraid it's time to replace the toilet. Raritan PH II is the best choice.