Mo. Rev. Stat. § 431.010
Current with changes from the 2023 Legislative Session
The use of private seals in written contracts, conveyances of real estate, and all other instruments of writing heretofore required by law to be sealed (except the seals of corporations), is hereby abolished, but the addition of a private seal to any such instrument shall not in any manner affect its force, validity or character, or in any way change the construction thereof.
§ 431.010, RSMo
RSMo 1939 § 3344