Patent ID: 7326738

Claim:
A sealing device comprising the reaction product of: an isocyanate component; and a resin component comprising; an isocyanate-reactive component present in an amount of from 50 to 75 parts by weight based on 100 parts by weight of said resin component and formed from an initiator selected from at least one of sucrose, glucose, sorbitol, mannitol, or dulcitol such that said isocyanate-reactive component has a functionality of at least four and said isocyanate-reactive component having a hydroxyl number of less than 40, a graft dispersion, and a physical blowing agent present in amount of from 0.01 to about 15 parts by weight based on 100 parts by weight of said resin component; and wherein said composition is substantially free of chemical blowing agents; and wherein said sealing device has a compression set of less than 18% at 250° F. for 24 hours.