Need to get some ordered today, thought I had the information at work but cannot find it....tried a search with no joy
The main pump head o-ring seal it's 68mm O.D. with a 2.5mm wall isn't it?
edit: soem googling has netted me Zexel part number 146600-0000 which is quoted as being 60mm x 2.62mm
Not sure if 60 is the ID or OD???