Specify genuine factory supplied fork oil seals and you will be fitting the very highest quality items that will be both easy to fit and enjoy long term durability - other makes of Oil Seal may be just as good, or they may not!
If you don't wish to go to the trouble of dropping the fork leg assemblies twice in a relatively short time, then fitting these factory specified items would be the sensible course of action for long term results!
Add as many items as you wish to your shopping cart and pay just one fixed price shipping cost. Use factory specified fork oil seals - why take the chance with any other type!