The part # posted by the OP looks like an original Simmerring ref. by Simmerit. Chances are that it's a very common seal, some of the numbers are dimensions in mm.
Some educated googling will do it, I wonder why so many can't even do simple online searches,
When replacing the seal make sure to check the wear of the shaft and if possible use a hand press with the correctly sized press rings to fit the seal. If really required it can be done carefully without press but it's easy to damage the seal. Slightly lubricate the seal. Also change the oil.
I did actually try to find that reference and was drawing a blank in my search. So the educated googling was not really succesful.
If you might want to share a link here what you found would be good.
Of course I am not OP and would not spend too much time on this. But when I looked at the Siemens reference there was nothing of use in the manual besides some names. The spare part list was a joke.
No other links came up for the part description.
I could figure as much as there was dimensional information in it, but to crack the code it takes more than a little google thats for sure.
There could be misplaced spaces in the Ref. posted by the OP. The manual of the BA2010 is online but parts are only listed with a #. I'd try to call Siemens (office for the MOTOX product line is in D-Tübingen). Don't know if it's a Flender (currently Siemens) product but if it is there could be delays, where I live spare part delivery is not the most expeditive (e.g. compared to SEW). As I doubt that it is an OEM seal you can most probably get such seal easily anywhere.
Also usually, where technically possible, sizes are mentioned on the seal and it's easy to check the shaft and bore diameter. Material is nothing special unless it's for a special use. Make sure to mount is the right way and to not damage the bore when removing the seal (an usual but seal-destructive practice is to psuh a screwdriver or a hook into the flange of the seal rather than trying to lever it out which can damage the bore and/or the shaft).
Anyaway, as I'm in Europe in such case I'd try do the following (meant generally, not specifically for this supplier):
1) Call the branch office or representative in my country.
2) If not succeeding I'd call the main office or branch in Germany if there's one (Gemany is a large market where chances are way better to get some useful support, at least compared e.g. to France, excepted maybe for some French products).
3) If still not succeeding I'd try to call the main office of the manufacturer wherever it is located in Europe or North America. With Asia I mostly won't even try and rather try the main office for Europe.
In many cases the smaller and/or less industrialized a country is, the lower are chances to get good support but there are exceptions (I know from commissioning in various parts of the world).