Connecticut · Engineer seal requirements
Connecticut PE seal requirements: size, wording, and the rule that sets them
As of
Connecticut's seal regulation, RCSA § 20-300-10, prescribes neither a diameter nor a wording — it delegates both to the State Board of Examiners for Professional Engineers and Land Surveyors, which sets the seal at 1½ inches in diameter. The Board's prescribed design carries "STATE OF CONNECTICUT" across the top, the licensee's name below it, the Connecticut coat of arms in the center, the license number, and "LICENSED" over "PROFESSIONAL ENGINEER" along the bottom. Every license issued after July 1, 1982 requires the word "Licensed" on the seal. A licensee classified as both a professional engineer and a land surveyor needs two seals, not one.
The 1¼-to-2-inch range often quoted for Connecticut appears in no Connecticut authority. The Board prescribes a single diameter, 1½ inches. CGS § 20-304 is only the enabling authority for seal regulations, and CGS § 20-302 is "Requirements for licensure" — neither describes the seal.
Connecticut Engineer seal
- Seal rule
- RCSA § 20-300-10 (License seals and stamps), with the design and size prescribed by the Board
- Legend
- “LICENSED PROFESSIONAL ENGINEER”
- Diameter
- 1½ inches in diameter, as prescribed by the Board. There is no range — the regulation itself states no dimension and leaves size to the Board.
- Expiration date
- The Board-prescribed design carries "STATE OF CONNECTICUT", the name, the state coat of arms, the license number and "LICENSED PROFESSIONAL ENGINEER" — no date.(Board seal specification (12 July 2022), under RCSA § 20-300-10(a))
- Signature date
- The dating duty is in the statute, not the seal regulation, and it is easy to miss: the sentence sits inside § 20-306a(a), a section headed "Practice ... by a corporation or limited liability company", but it reaches documents prepared by "any such corporation or limited liability company or engineer or land surveyor" and says they "shall be dated and bear the signature and seal".(CGS § 20-306a(a))
- City on seal
- The rule does not require a city on the seal.(Board seal specification (12 July 2022), under RCSA § 20-300-10(a))
- "STATE OF CONNECTICUT" arcs across the top of the seal and "PROFESSIONAL ENGINEER" along the bottom, with the word "LICENSED" directly above it.(Board seal specification (12 July 2022))
- The Connecticut state coat of arms — the three grapevines with the Qui Transtulit Sustinet ribbon — occupies the center of the seal. It is part of the prescribed design, not decoration.(Board seal specification (12 July 2022))
- Your name sits below the top arc and your license number below the coat of arms.(Board seal specification (12 July 2022))
- A rubber stamp of identical size and design to the specified seal suffices.(RCSA § 20-300-10(b))
- A digital signature on an electronic document must satisfy the NIST Digital Signature Standard, use keys unique to the licensee and verifiable by a trusted third party, keep the private key under the licensee's direct and exclusive control, and fail verification if the document is altered.(RCSA § 20-300-10(c)(1)-(5))
- A lost or compromised private digital key must be reported to the board and the department within fifteen days of discovery, and a new key pair generated.(RCSA § 20-300-10(e))
Connecticut engineer seal questions
Can a Connecticut engineer's seal say "P.E." instead of the full wording?▾
"P.E." is not an authorized substitute. The Board-prescribed design carries the words "LICENSED PROFESSIONAL ENGINEER" in full, and "Licensed" has been mandatory for every license issued since July 1, 1982. (Board seal specification (12 July 2022))
How should the license number appear on a Connecticut seal?▾
Put the license number on the seal without the "PEN" or "LSX" prefix and without the leading zeros. (Board seal specification (12 July 2022))
Is a Connecticut electronic document sealed if it carries only a stamp image?▾
An electronic document carrying only a graphical facsimile of the stamp is not a sealed document. Where the facsimile cannot be erased or removed, the document must carry a prominent note reading "This shall not be considered a sealed document." (RCSA § 20-300-10(c)(6))
Does every sheet of a Connecticut plan set have to be sealed?▾
Sealing one sheet of a bound set is enough in general, but plans filed for building permits and appurtenant structures must be sealed on every sheet. (RCSA § 20-300-10(a))
Generate a Connecticut Engineer seal to this specification
Board approved
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