Rubber Plug underneath floorpan

[KFRG]

Hey guys,
I was looking over the underbody of the stang recently, around the driverside floorpan, and accidentally pressed against that little rubber plug that has sillicone around it cracking it on the side. Idk if it's just the sillicone that's cracked or the rubber itself. It looks like a plug of somesort so I don't want any chance of water or moisture leaking in.
Should I just pick up some RTV or sillicone and apply a little or replace the plug?

Thanks.

 

[NIKwoaC]

Its really up to you as to what you want to do. Their function is simply to seal the holes in the floor pan, so you can either replace it or attempt to repair it. You probably won't find replacements at a typical auto parts store (I've tried), so the dealer or some online suppliers may carry them. Auto-body specific stores may carry them, too.

 

[KFRG]

I guess my question is if I cracked a small piece of the mold on the side would it cause a leak or is that just excess sillicone?

 

[SVT32VDOHC]

It's not silicone, it's body/joint sealer. Get it at any NAPA, or Carquest. Silicone is nasty and smelly. This stuff has no odor.

 

[KFRG]

Thanks. So I guess RTV is not the way to go? As long as I don't have to replace the plug.

 

[glowstang93]

It's not silicone, it's body/joint sealer. Get it at any NAPA, or Carquest. Silicone is nasty and smelly. This stuff has no odor.

Is that the same stuff that they used along the seams on door jambs on the body of the car and also under the doors along the weld seams?

 

[KFRG]

Well guys I picked up some 3M 8500 Body Sealant, sounds like a good product.

 

[Mustang5L5]

Has anyone found replacement plugs? Mine are all cracked the dry-rotted. I'd like to install new ones