Black rtv for seam sealing

I got my mini tubs in and didnt know what kinda sealer to use. I messed around and used black rtv on the direct metal. I got that rust film. Do I need to remove it and treat the metal or would rust treatment take care of it?
Thanks

Has any of u guys done this and what did u do to fix it?

3M joint and seam sealer.

If I have to strip this rtv out I will go back with the 3m stuff. Im needing info on the issue I have accumilated.
Thanks

Has any of u used the rtv like I did?

whitefield wrote:3M joint and seam sealer.

I agree


I have used the rtv like you did it just not very paintable

What did u do about the rust issue?

tconnection wrote:What did u do about the rust issue?

I would strip it oit and wire brush the rust area. Once the seam sealer is on and has COVERED the bare metal, it won't rust unless the area is humid. I always paint the joint ASAP

yellowhorse7 wrote:

tconnection wrote:What did u do about the rust issue?

I would strip it oit and wire brush the rust area. Once the seam sealer is on and has COVERED the bare metal, it won't rust unless the area is humid. I always paint the joint ASAP

X2 you can also strip out and clean it good and prime and paint and then seal it and then repaint it with a top coat

Clean it all off and brush some por15 on then use the 3m stuff.

I would paint with some rustoleum , my Dad retired at 50 from Union Carbide ( Linde divison) and he said they let a light rust start on the new tanks and then paint with them with Rustoleum [only] for the longest lasting finish they've found over the years.

https://2img.net/h/i195.photobucket.com/albums/z169/nuclearcobra/IMG_3362.jpg https://2img.net/h/i195.photobucket.com/albums/z169/nuclearcobra/IMG_3371.jpg

that's gloss black and black 50yr caulking I used for seams on the rear firewall and the metal I put in.

A light rust is interesting. Never would have thought of that.

I was told once not to use silicon on bare sheetmetal because it would cause it to rust out. I did not and still do not understand why but never was willing to test the theory.

O got the rtv stripped off and picked and picked in between tacks and wire brushed good. I spray ed it with permatex rust treatment and it turned black.

All silicone based sealers will cause oxidation on bare metal.

Yep I always loved to see a car come in with it all around the windshield. Lol

cool40 wrote:Yep I always loved to see a car come in with it all around the windshield. Lol

Yep,thats always fun.