This work presents an experimental investigation on the response of unscrimmed FM‐73 adhesive to mechanical loads under constant environment. The nonlinear, viscoelastic behavior of the material was characterized by means of isothermal uniaxial creep and recovery data, which are inserted into a constitutive equation for uniaxial loading. The model was then extrapolated to anticipate the response of the material under two‐step loading as well as to predict the hysteresis loop under cyclic constant stress rate tests. Excellent agreement was found between predicted values and corresponding experimental results obtained in subsequent tests.