What product (not using a spray gun) to use when reassembling stripped body parts

[1955Panel]

Len,

I just shot you over an order for a Finishline 3 Primer Gun to use with my new Tekna- planning on shooting some primer in a couple of months.
Was wondering what product (not using a spray gun), either in a rattle can or brush on, to use when reassembling the rear valance on my '55 Chevy Panel truck. This is the piece that connects the R & L rear lower sides and creates the bottom section above the frame, where the rear "barn" doors close.
I have the rear valance freshly sandblasted/in heated storage and wondering what product would be best to coat the bolt together areas before reassembling it. Ultimately I will shoot the whole body in epoxy etching primer, after the bodywork is finished and I assume this seam will get a light coat of seam sealer, as it is a minor flex point.
Since I am covering such a small area, I was hoping to use a brush on or rattle can product, that would be compatible with the overlying primers/top coats and also prevent any future rust or corrosion.

Thanks,
1955Panel

[Len]

Len,

I just shot you over an order for a Finishline 3 Primer Gun to use with my new Tekna- planning on shooting some primer in a couple of months.
Was wondering what product (not using a spray gun), either in a rattle can or brush on, to use when reassembling the rear valance on my '55 Chevy Panel truck. This is the piece that connects the R & L rear lower sides and creates the bottom section above the frame, where the rear "barn" doors close.
I have the rear valance freshly sandblasted/in heated storage and wondering what product would be best to coat the bolt together areas before reassembling it. Ultimately I will shoot the whole body in epoxy etching primer, after the bodywork is finished and I assume this seam will get a light coat of seam sealer, as it is a minor flex point.
Since I am covering such a small area, I was hoping to use a brush on or rattle can product, that would be compatible with the overlying primers/top coats and also prevent any future rust or corrosion.

Thanks,
1955Panel

Use Zero Rust rattle can, it works great for this application.