Regarding the other day when I completely peeled off the adhesive seal on the cap of the Iméjé sealant,
I received multiple comments saying,
"Wouldn't it be better to leave it partially intact to maintain better sealing?"
Well, you know what, that makes sense.
Speaking specifically about Iméjé sealant,
I have empirical evidence that even when you leave it at about 1/4 of the original 500ml,
completely peel off the seal and only screw on the outer cap,
it won't harden at all even after sitting for about a year.

↑This is Stans tire sealant.
"Tire Sealant" is not a generic term but a product name,
to clarify that I'm using the one with stronger performance
rather than "Race Sealant" which thickens faster.

Looking at the transparent sight line on the side of the container,
there's approximately 630ml remaining out of 32 ounces
(technically US fluid ounces), which is 946ml,

and looking at the bottom,
you can naturally see that there's liquid inside,

but when you flip it upside down, you can see it's already
hardened at the bottom.

↑Like this.
With Stans sealant,
whether it's home use or even shop use,
toward the end you get cottage cheese-like clumps forming at the bottom
(with Race Sealant it builds up several centimeters).
Stans seals are not adhesive but rather the round aluminum seal type
where tabs are folded at four points,
and up until now I've been removing and discarding that seal,
but if I'm careful about keeping it sealed without discarding it,
maybe clumps won't form as easily.
There's a story about how when storing a half-drunk carbonated beverage bottle,
if you squeeze out the air and dent it,
the carbonation won't escape as easily... but
there's also a theory that it actually has the opposite effect (though I don't do it).
Sealant isn't carbonated beverage,
and since the Stans 32-ounce container can be compressed,
there's a possibility that if you close the cap while trying to push out as much air as possible,
you can suppress clump formation.
Thank you for the comment.
On a different note,
the front wheel from a customer who brought it in for inspection the other day
is a brand that starts with "S" and ends with "A" (five letters),
which is probably not what most people would think of—
that notorious fly-by-night brand.
While I'm at it, I should mention the third letter is not "C".
I have reasons for wanting to keep it vague, so I can't write the correct answer.
I received multiple comments saying,
"Wouldn't it be better to leave it partially intact to maintain better sealing?"
Well, you know what, that makes sense.
Speaking specifically about Iméjé sealant,
I have empirical evidence that even when you leave it at about 1/4 of the original 500ml,
completely peel off the seal and only screw on the outer cap,
it won't harden at all even after sitting for about a year.

↑This is Stans tire sealant.
"Tire Sealant" is not a generic term but a product name,
to clarify that I'm using the one with stronger performance
rather than "Race Sealant" which thickens faster.

Looking at the transparent sight line on the side of the container,
there's approximately 630ml remaining out of 32 ounces
(technically US fluid ounces), which is 946ml,

and looking at the bottom,
you can naturally see that there's liquid inside,

but when you flip it upside down, you can see it's already
hardened at the bottom.

↑Like this.
With Stans sealant,
whether it's home use or even shop use,
toward the end you get cottage cheese-like clumps forming at the bottom
(with Race Sealant it builds up several centimeters).
Stans seals are not adhesive but rather the round aluminum seal type
where tabs are folded at four points,
and up until now I've been removing and discarding that seal,
but if I'm careful about keeping it sealed without discarding it,
maybe clumps won't form as easily.
There's a story about how when storing a half-drunk carbonated beverage bottle,
if you squeeze out the air and dent it,
the carbonation won't escape as easily... but
there's also a theory that it actually has the opposite effect (though I don't do it).
Sealant isn't carbonated beverage,
and since the Stans 32-ounce container can be compressed,
there's a possibility that if you close the cap while trying to push out as much air as possible,
you can suppress clump formation.
Thank you for the comment.
On a different note,
the front wheel from a customer who brought it in for inspection the other day
is a brand that starts with "S" and ends with "A" (five letters),
which is probably not what most people would think of—
that notorious fly-by-night brand.
While I'm at it, I should mention the third letter is not "C".
I have reasons for wanting to keep it vague, so I can't write the correct answer.