You can buy double stick tape so it is possible.
Rather, I think the vendor is telling you that it isn't PRACTICAL. When you assemble parts with a gasket, you need to allow one side to move for alignment, otherwise the gasket can tear.
Since the gasket should do the actual sealing, the adhesive should be considered only as an installation aid.
Why not consider applied in place material such as RTV Silicone or other "tube" sealants.
Keep the wheels on the ground
Bob
showshine@aol.com