Board Thread:Versus Debates/@comment-35806245-20180607100011/@comment-33959444-20180610214037

Thekillman Yes, but that's speculation. It's very possible Kushina could have also been referencing the power of seals in general rather than their effectiveness against the Bijuu.

Minato used Hiraishin for the Bijuu Dama, not a Sealing Jutsu.