Blah blah chakra is a troll blah.
EDIT: Sorry, that was unnecessarily dismissive. Let's try again.
The spec for the seal didn't give any particular details so far as I'm aware. As
@Velorien clearly stated, we were asked to give a number based on no detail and we said "lacking other information, 3 meters". i.e. we're pulling this number out of thin air and you're welcome to suggest and provide evidence for something else. Personally, I'm not motivated to engage with questions that boil down to "you're wrong", but you're welcome to suggest an actual mechanic and provide support for why it should work and under what conditions it should not work.