Epoxy based adhesives/sealants with a 1:1 or 2:1 mix ratio that is ideal for bonding many substrates with different coefficients of expansion and contraction.  As an alternative to mechanical or fusion fastening, the reasons for Scotch-Weld Adhesives are many: greater design latitude, cleaner lines, material substitution, less machining, lighter weight, more durability, and often less cost.