This is a direct replacement DUCATI part number 88641301A. A few of the images show various fitments within the DUCATI range of motorcycles.
If you have ever had to replace or remove the fuel filler cap you will know that these o-rings are notoriously hard to replace once the filler cap has been removed. I can attest to that with more than a few failed attempts at reusing the existing part.
Your seal will be black in color but with identical performance characteristics to the OEM item.
Why pay full price when you can have the same function part for less.
Seal will fit the listed models. and maybe others. Please check.
Hypermotard 1100 Evo
Hypermotard 1100 Evo SP