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^^ Sage of six paths counter it whatever it uses
SOSP > Totsuka
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^^ Juubi is Progenitor of
ALL THAT EXISTS IN THIS WORLD
Juubi > Totsuka
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^^ Here you have link where Kishi states himself Madara has no weakness, it can be interpreted in many ways. One could be that he is simply invincible until manga or Kishi proves otherwise.
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^^ Tailed beasts preserves balance in Shinobi World, that why they can't be sealed forever, only in jinchurki what Sage did himself.
Tailed beasts will return anyway, so sealing them is useless unless jinchurki method sealing.
Jinchurki can't be sealed as well as they have tailed beasts in themselves, besides Pein method to seal tailed beast first then you can seal Jinchurki body
Uzumaki clan are experts at sealing arts, so they may counter Sealing techniques or at least try to counter them. The best among Uzumaki clan could be able to may be stop sealing process...
THat is kishi world, so everything is possible