Minn. Stat. § 317A.163: CORPORATE SEAL.

Subdivision 1. Seal not required.

A corporation may, but need not, have a corporate seal. The use or nonuse of a corporate seal does not affect the validity, recordability, or enforceability of a document or act. If a corporation has a corporate seal, the use of the seal by the corporation on a document is not necessary.

Subd. 2. Required words; use.

If a corporation has a corporate seal, the seal may consist of a mechanical imprinting device, or a rubber stamp with a facsimile of the seal affixed on it, or a facsimile or reproduction of either. The seal may include a part or all of the name of the corporation and a combination, derivation, or abbreviation of either or both of the phrases "a Minnesota Nonprofit Corporation" and "Corporate Seal." If a corporation has a corporate seal, it or a facsimile of it may be affixed, engraved, printed, placed, stamped with indelible ink, or in any other manner reproduced on any document.