Ohio · Engineer seal requirements

Ohio PE seal requirements: size, wording, and the rule that sets them

As of

Ohio requires the legend "Registered Professional Engineer" — not "Professional Engineer", and not "P.E." — on a seal of the design authorized by the Board, under OAC 4733-23-01. The rule prescribes no diameter at all. A computer-generated seal with an electronic signature is permitted, provided the signature is unique to you, capable of verification, under your sole control, and linked to the document so that any later change invalidates it.

Ohio's rule prescribes the legend but not a diameter. Sizes quoted around the web for Ohio come from stamp vendors' catalogues, not from the Administrative Code.

Ohio Engineer seal

Legend
“Registered Professional Engineer”
Diameter
The rule does not prescribe a diameter.
Expiration date
The seal bears the registrant's name and the legend "Registered Professional Engineer" and nothing else the rule names — no expiration date, and not even a registration number. Separately, no one may seal a document after the certificate has expired.(ORC 4733.14; OAC 4733-23-01)
Signature date
Plans, specifications, plats, reports and every other work product must be stamped with the seal and signed and dated, or bear a computer-generated seal with an electronic signature and date.(ORC 4733.14; OAC 4733-23-01)
City on seal
Only the name and the legend are prescribed. No city or place of business appears in the statute or the rule.(ORC 4733.14; OAC 4733-23-01)
  • The seal is of the design authorized by the Board and bears the registrant's name together with the legend "Registered Professional Engineer" — not "Professional Engineer" and not "P.E.".(OAC 4733-23-01)
  • Plans, specifications, plats, reports and every other work product issued by a registrant must be stamped with the seal and signed and dated — or carry a computer-generated seal with an electronic signature and date.(OAC 4733-23-01)
  • An electronically sealed work product needs an electronic authentication process attached to, or logically associated with, the document.(OAC 4733-23-01)
  • That electronic signature must be unique to you, capable of verification, under your sole control, and linked to the document so that any later change to the data invalidates it.(OAC 4733-23-01)

Ohio engineer seal questions

Is there a required diameter for an Ohio PE seal?

The rule sets no diameter. The 1¾ inches commonly quoted for Ohio comes from stamp suppliers' catalogues rather than the Administrative Code. (OAC 4733-23-01)

Does an Ohio PE seal say "Professional Engineer" or "Registered Professional Engineer"?

"Professional Engineer" on its own is not the Ohio legend. The word "Registered" is part of it. (OAC 4733-23-01)

Generate a Ohio Engineer seal to this specification

Board approved

Your Ohio Professional Engineer seal from pedigitalstamps.com meets every requirement on this page — the required wording and the layout set out in OAC 4733-23-01 (Registrant's seal). Fill in your details and download it in seconds.

Every format you need is included — PNG, PDF, SVG and CAD — ready to place in Bluebeam, Acrobat or AutoCAD.

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