What size Seal for the Box Assembly Speedometer Gear.

[Craigermags]

I would like to replace the rubber seal on my 1971 CB750 box assembly speedometer drive. I can't find any number on the outside of the seal.

However, looking on ebay I did see one for sale and could identify the numbers on the seal. They were 34-48 7 Y.

Can anyone confirm these numbers or help me identify what the part number or seal size actually is?

Thanks for your help Craig