Okla. Stat. tit. 62, § 603

When the seal of this State or of any of its departments, agencies, or other instrumentalities or of any of its political subdivisions or districts is required in the execution of a public security, the authorized officer may cause the seal to be printed, engraved, stamped or otherwise placed in facsimile thereon. The facsimile seal has the same legal effect as the impression of the seal itself.