The silicone glue is an adaptable bonding and sealing adhesive that allows you to manipulate foam rubber as the glue dries.
How to glue silicone foam mat.
Silicone glue works best on silicone rubber.
To glue silicone rubber to metal.
Epoxy silicone vinyl caulk and many other glues and adhesives will work.
Rough the silicone rubber and the metal with a low grit coarse sand paper.
People like permabond and loctite can do them.
Since you are working with foam mats you can slice into the foam to give more contact area for the adhesive.
Synthetic foam and silicone are good partners.
Saturate the silicone rubber surface with an adhesion promoter designed to work with poly s.
So yes you can use liquid nails type adhesives but you will be better off with their general construction adhesive than the milder stuff designed for polystyrene.
Liberally apply adhesive coating both pieces and allow about 10 seconds for the glue to become tacky.
Bonding the foam together.
It is fairly easy to obtain at hardware or big box home improvement stores.
Applying glue to a small piece of foam place the two pieces of cushion foam that need to be glued on top of each other with the sides to be adhered facing outward as shown to the lower left.