Chemically crosslinked polyurethanes (PU) were synthesized using poly(ethylene glycol) – PEG, poly(ε-caprolactone)diol - PCL-diol, as hydrophilic and hydrophobic polyols, and PCL-triol, as crosslinking agent, and hexamethylene diisocyanate (HMDI). The water swelling capability of the PU depends on the composition and temperature. The hydrogels present a typical elastomeric behavior and mechanic synergism under load and unload cycles, and also present LCST phase behaviour.