Paint and Body Is this seam sealer?

Removed the sound deadner in my interior and I was cleaning the floor and I noticed on the passenger side of my car it appears as the two sheet metal pieces have separated. There is now a hole where I can see through to the outside.

Is this seam sealer running across the seam? Should I hit the metal with a hammer and reseal it with seam sealer?



Here’s the other side for reference

90sickfox said:

That is seam sealer. I surprised they didn't tap the floor pan to close that gap. You can add more seam sealer but the proper way is to wire wheel all the old stuff out first.

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Sounds good, I will tap it in and remove the old sealer and reapply. Thanks