1 U.S. Code § 114
1 U.S. Code § 114 is about Sealing of instruments. It is under Chapter 2 (Acts and Resolutions; Formalities of Enactment; Repeals; Sealing of Instruments) of Title 1 (General Provisions) of the Code.
In all cases where a seal is necessary by law to any commission, process, or other instrument provided for by the laws of Congress, it shall be lawful to affix the proper seal by making an impression therewith directly on the paper to which such seal is necessary; which shall be as valid as if made on wax or other adhesive substance.