The present invention provides a one-part curable composition, comprising
(A) an organic polymer having a silicon-containing group capable of
cross-linking by forming siloxane bonds; (B) a metal carboxylate; and (C)
a carboxylic acid smaller in molar quantity than the (B) component metal
carboxylate, the one-part curable composition being simultaneously
practical in recovery ratio, durability, creep resistance, storage
stability and adhesion.