Assembly (20), comprising a first substrate (10) and a second substrate (12) that are bonded with at least one seal (14), which can be disassembled by localized heating at the interface between the seal (14) and one of the substrates (10, 12), characterized in that said seal (14) consists of polymer material that has a Young's modulus value of tensile strength at 25° C. of between 0.1 and 500 MPa, and comprises at least one migrating agent that can migrate up to at least one of the interfaces of the seal (14) for generating an interfacial detachment under the action of heat.