Open celled foam must be sealed prior to painting. The seal is a simple mixture of white glue thinned with water and brushed on.
Yes, otherwise you will seal in moisture causing potential rot and mildew.
Any primer is going to seal the surface which is all the gesso is doing.
Any good alcohol or lacquer based sealer will work. I use shellac if I'm staining and Kilz if I'm painting.
I believe that you prime than paint than seal. It depends on the paint you are using and what you are painting A lot of the exterior paints used today don't require any undercoat. However if you are painting over a previously painted surface you must keep preparation in mind.
rubber seal around the opening on the hood is loose and preventing the sunroof from moving down and sliding open.
Seal it to the back side of the tub? There should be a foam ring that is beveled that goes between the tub and the drain. When you tighten the cover plate down, it compresses the foam and seal the drain. Seal the hole so that it doesn't work? There is probably a cover plate that is solid and would seal on the inside surface of the tub.
check to see you have a thermostat installed. If you have one then you have a damper open due to no vaccum or corroded or foam seal needs replacing
Calligraphy, painting, and seal carving
Yes
open
Yes the seal has nostrils that can close and open if wanted.
Open, unplug, or unseal. Those are opposites of seal.
The Dodge Neons suffer from water leaks around the rear tail light areas caused by the foam seal and/or trunk seal weatherstripping leaks. Solution is to pull the light out, apply silicone seal to the foam seals and put them back on the car. The trunk seal can be done in similar fashion. This is a known issue.
Platelets are the cell pieces that form clots and seal up cuts.
Spray foam works as insulation due to a chemical reaction that occurs when the spray foam is introduced to oxygen in the air. Inside the can, there is no oxygen and the can forms an air tight seal. The oxygen that reacts with the spray foam causes the foam to expand from five to ten times its size, thus filling all cracks and crevices.
I've tried that many times and never found a reasonable method.
Secure the pipes. Use spray foam on the pipes, drain lines so no holes or leaks .