Written by Acorn Sales Company, manufacturing stamps and seals since 1964 · Reviewed by Holly R, VP of Sales and Marketing at Acorn Sales, against the Rhode Island State Board of Registration for Professional Engineers and R.I. Gen. Laws § 5-8-14 on 21 September 2026 · Updated 21 September 2026
Rhode Island prescribes no seal size at all. There is no diameter and no minimum text height in R.I. Gen. Laws § 5-8-14 or anywhere in 430-RICR-00-00-1, including §§ 1.3.1(E) and 1.7(C). The regulation says only that the stamp is “of the design indicated by the Department,” and the Board’s Professional Engineers resources page publishes no specimen, template or dimension. Where that indicated design actually lives could not be located, so a supplier quoting an inch figure as the Rhode Island requirement is quoting its own house standard.
What Rhode Island does prescribe is wording and arrangement. Four text elements go on the stamp: your name as registered, your serial number, which is the statute’s own term for the license number, the legend “Registered Professional Engineer,” and, where a discipline has been assigned under § 1.3.1(D), that discipline set directly under the legend. The legend is the template trap: Rhode Island says Registered, not Licensed, so Massachusetts or Connecticut artwork reused here comes out wrong.
Sealing is also per sheet. Section 1.7(C)(4) requires a seal on the final and complete cover sheets and on each original sheet of plans, drawings or plats, and requires every seal imprint on a final document to bear an original signature and date or an electronic stamp and date. That combination is why an embosser alone is a poor purchase in Rhode Island and why most registrants carry an inked stamp. Acorn cuts this stamp as a 2 inch square, not a circle. That is our production record rather than a published figure, and it is the detail an out-of-state template gets wrong, because almost every other jurisdiction is round.
Rhode Island PE seal requirements at a glance
| Requirement | Rhode Island rule | Source |
|---|---|---|
| Seal required | Yes | R.I. Gen. Laws § 5-8-14 |
| Required elements | Your name as registered, Your serial number, The legend “Registered Professional Engineer” and Your assigned engineering discipline, where one is assigned | 430-RICR-00-00-1.3.1(E)(1) |
| Size and shape | Acorn cuts this seal to a 2 inch square, and that is a production record rather than a published rule. | Acorn Sales production record, Rhode Island professional engineer stamp |
| Device allowed | A facsimile is expressly good. § 5-8-14 requires documents to be “stamped with his or her seal or facsimile of a seal,” and § 1.3.1(E)(2) repeats “signed and stamped with the said stamp/seal or facsimile thereof.” The regulation uses the phrase “stamp/seal” throughout, so an inked rubber or self-inking stamp, an embosser and a printed or electronic facsimile are all acceptable devices. | R.I. Gen. Laws § 5-8-14 |
| Signature and date | Three things travel together and the date is mandatory. | R.I. Gen. Laws § 5-8-14 |
| What must be sealed | Final engineering drawings, specifications, plats and reports, when issued (§ 5-8-14). | R.I. Gen. Laws § 5-8-14 |
| Electronic seal | Electronic sealing is allowed but conditionally, and the condition is the receiving agency. § 1.3.1(E)(3): “The Board allows electronic signatures and/or seals on plans submitted to government agencies, such as municipalities and state agencies that accept electronic documentation and electronic signatures and seals as allowed by the Uniform Electronic Transactions Act adopted under R.I. Gen. | 430-RICR-00-00-1.3.1(E)(3) |
| Renewal and lapse | § 5-8-14 forbids a registrant to affix the seal to documents after the certificate of registration has expired, and forbids affixing it to work for which the registrant was not responsible or to aid another in evading the chapter. | R.I. Gen. Laws §§ 5-8-14, 5-8-15 |
| Firm number on documents | Firm registration is real. | R.I. Gen. Laws § 5-8-24 |
| Licensing board | The Rhode Island State Board of Registration for Professional Engineers | R.I. Gen. Laws chapter 5-8 (Engineers), especially §§ 5-8-14, 5-8-15, 5-8-21 |
Rules for other states are on PE stamp requirements by state.
Is a seal required in Rhode Island?
Rhode Island requires a seal Rhode Island splits the duty in an unusual way: obtaining the stamp is permissive and using it is mandatory. R.I. Gen. Laws § 5-8-14 provides that each registrant “may, upon registration, obtain a seal of the design authorized by the board,” and then that “Final engineering drawings, specifications, plats, and reports prepared by a registrant shall be, when issued, signed, dated, and stamped with his or her seal or facsimile of a seal.” The Board regulation mirrors both halves at § 1.3.1(E)(1) and (E)(2). The duty therefore sits in the statute, with the regulation supplying the design elements and the electronic rules.
What must appear on the seal
- Your name as registered
- Your serial number
- The legend “Registered Professional Engineer”
- Your assigned engineering discipline, where one is assigned
Rhode Island calls the license number a serial number, and that is the statute’s own word. The discipline line is conditional rather than optional: § 1.3.1(E)(1) requires that “The Registrant’s assigned engineering discipline, if applicable in accordance with § 1.3.1(D) of this Part, shall appear on the stamp under the words ‘Registered Professional Engineer.’” Note the mandated position, directly under the legend. Nothing is expressly prohibited on the face. The template trap is the legend itself: Rhode Island says Registered Professional Engineer, not Licensed, and a layout borrowed from Massachusetts will get the wording wrong.
Size and shape
Acorn cuts this seal to a 2 inch square, and that is a production record rather than a published rule. The state publishes no dimension, so the figure below is what we make and ship for Rhode Island licensees rather than something you can point a reviewer at. Rhode Island is the one to watch: the device we cut is square, not round. Almost every other jurisdiction in this table is a circle, so a round seal ordered from an out-of-state template is the wrong shape for Rhode Island. The regulation says only that the stamp is of the design indicated by the Department, and the Department publishes no specimen, so the square 2 inch format is what we make and what comes back accepted. What the state publishes: No diameter, no minimum text height. Checked R.I. Gen. Laws § 5-8-14 and the whole of 430-RICR-00-00-1, including §§ 1.3.1(E) and 1.7(C). The regulation says only that the stamp is “of the design indicated by the Department,” and the Board’s own Professional Engineers resources page publishes no specimen, template or dimension. Where the Department’s indicated design actually lives could not be located and is a named gap.
Embosser, rubber stamp or digital
A facsimile is expressly good. § 5-8-14 requires documents to be “stamped with his or her seal or facsimile of a seal,” and § 1.3.1(E)(2) repeats “signed and stamped with the said stamp/seal or facsimile thereof.” The regulation uses the phrase “stamp/seal” throughout, so an inked rubber or self-inking stamp, an embosser and a printed or electronic facsimile are all acceptable devices. The safe buy is a round inked stamp carrying the four elements with the discipline set under the legend, because Rhode Island requires a seal impression on every original sheet as well as the cover, and an embosser will not reproduce across a set.
Signing and dating
Three things travel together and the date is mandatory. The statute requires final documents to be “signed, dated, and stamped.” The Code of Ethics provision is more specific about what the imprint must carry: § 1.7(C)(4) requires that “All seal imprints on final documents shall bear an original signature and date or an electronic stamp and date.” So the default is a wet original signature plus a handwritten date, with an electronic stamp and date as the alternative. Nothing requires the signature to cross the seal.
The discipline goes under the legend, and the legend says “Registered”
Rhode Island prescribes both the words and their arrangement. The legend is “Registered Professional Engineer,” not Licensed Professional Engineer, and where a discipline has been assigned under § 1.3.1(D) it “shall appear on the stamp under the words ‘Registered Professional Engineer.’” That is a layout instruction, and it is the single detail that makes a stamp cut from a neighboring state’s artwork non-compliant.
Which documents must be sealed
Final engineering drawings, specifications, plats and reports, when issued (§ 5-8-14). The regulation is broader about placement: § 1.7(C)(4) requires a principal or authorized licensed or certified employee to “apply a seal to final and complete cover sheets of plans, drawings, plats, technical reports, and specification and to each original sheet of plans, drawing or plats, prepared by the engineer or someone under their responsible charge.” Drafts are not banned from bearing a seal but must be marked: “Interim and draft plans, documents, and sketches, whether advance or preliminary copies, must be so identified.” Statutory exemptions sit at R.I. Gen. Laws § 5-8-21, which was not read here.
Electronic and digital seals
Electronic sealing is allowed but conditionally, and the condition is the receiving agency. § 1.3.1(E)(3): “The Board allows electronic signatures and/or seals on plans submitted to government agencies, such as municipalities and state agencies that accept electronic documentation and electronic signatures and seals as allowed by the Uniform Electronic Transactions Act adopted under R.I. Gen. Laws § 42-127.1-1, et seq.” No certificate authority, cryptographic standard or file format is named. The controlling law is Rhode Island’s UETA, not a board-specific digital seal rule.
Renewal, lapse and retirement
§ 5-8-14 forbids a registrant to affix the seal to documents after the certificate of registration has expired, and forbids affixing it to work for which the registrant was not responsible or to aid another in evading the chapter. Expiration and renewal of certificates are governed by § 5-8-15, which was not read in full. Not addressed: nothing in 430-RICR-00-00-1 says the stamp must be surrendered or destroyed on lapse, suspension or revocation, and nothing says the serial number changes. Checked the whole regulation and § 5-8-14.
Firm registration
Firm registration is real. Sole proprietorships, partnerships, limited liability partnerships, corporations and limited liability companies practicing engineering need a Certificate of Authorization under R.I. Gen. Laws § 5-8-24, and 430-RICR-00-00-1.4 governs COA issuance, expiration and renewal. The COA does not get its own seal, and nothing requires the COA number to appear on sealed documents. Checked § 1.4 and § 1.3.1(E) for such a requirement and found none.
What to check before you order
Order a round stamp with four text elements: your name as registered, your serial number, the legend “Registered Professional Engineer,” and, if you have an assigned discipline, that discipline set immediately below the legend. Use “Registered,” never “Licensed.” Rhode Island uses serial number terminology, so give the number the Department assigned you. No size is prescribed, so match your existing artwork or a standard 1-5/8″ to 2″ round body. Leave room for a handwritten original signature and date beside the imprint, since every seal imprint on a final document must bear both, and Rhode Island imposes no proof-of-registration duty before your stamp is made.
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Frequently asked questions
What size does a Rhode Island PE stamp have to be?
Not addressed. No diameter and no minimum text height exist. Checked R.I. Gen. Laws § 5-8-14 and the whole of 430-RICR-00-00-1, including §§ 1.3.1(E) and 1.7(C). The regulation defers to a design “indicated by the Department” which the Board does not publish on its own site. A registrant who wants a literal match to the Department’s artwork has to request it from the Division of Design Professionals; the statute and the regulation together supply only the text elements. Acorn cuts this stamp as a 2 inch square, not a circle. That is our production record rather than a published figure, and it is the detail an out-of-state template gets wrong, because almost every other jurisdiction is round.
Is a PE stamp required in Rhode Island?
Using one is required; obtaining one is written as optional. R.I. Gen. Laws § 5-8-14 says each registrant “may, upon registration, obtain a seal of the design authorized by the board,” and then that “Final engineering drawings, specifications, plats, and reports prepared by a registrant shall be, when issued, signed, dated, and stamped with his or her seal or facsimile of a seal.” The Board regulation mirrors both halves at § 1.3.1(E)(1) and (E)(2).
What has to appear on a Rhode Island PE stamp?
Your name as registered, your serial number, the legend “Registered Professional Engineer,” and your assigned engineering discipline where one has been assigned. Nothing is expressly prohibited on the face, but nothing beyond these is required either.
Where does the discipline go on the stamp?
Immediately below the legend, and that position is mandated. Section 1.3.1(E)(1): “The Registrant’s assigned engineering discipline, if applicable in accordance with § 1.3.1(D) of this Part, shall appear on the stamp under the words ‘Registered Professional Engineer.’” That is a layout instruction, and it is the single detail that makes a stamp cut from a neighboring state’s artwork noncompliant.
Does a Rhode Island stamp say Registered or Licensed Professional Engineer?
Registered. Both the statute and the regulation use “Registered Professional Engineer.” Rhode Island also calls the number a serial number rather than a license number, so use that term when placing an order to make sure the right number is supplied.
Can I use an embosser, a rubber stamp or a facsimile in Rhode Island?
All three. A facsimile is expressly good: § 5-8-14 requires documents to be “stamped with his or her seal or facsimile of a seal,” and § 1.3.1(E)(2) repeats “signed and stamped with the said stamp/seal or facsimile thereof.” The regulation uses the phrase stamp/seal throughout. The practical buy is a round inked stamp, because Rhode Island requires an impression on every original sheet as well as the cover and an embossed impression does not reproduce across a set.
Where do the signature and date go in Rhode Island?
Beside the imprint, and both are mandatory on every imprint. The statute requires final documents to be “signed, dated, and stamped.” The Code of Ethics provision is more specific: § 1.7(C)(4) requires that “All seal imprints on final documents shall bear an original signature and date or an electronic stamp and date.” The default is a wet original signature plus a handwritten date, with an electronic stamp and date as the alternative. Nothing requires the signature to cross the seal.
Which Rhode Island documents have to be sealed, and on which sheets?
Final engineering drawings, specifications, plats and reports, when issued, under § 5-8-14. The regulation is broader on placement: § 1.7(C)(4) requires a principal or authorized licensed or certified employee to “apply a seal to final and complete cover sheets of plans, drawings, plats, technical reports, and specification and to each original sheet of plans, drawing or plats, prepared by the engineer or someone under their responsible charge.” Drafts are not barred from carrying a seal but must be marked: “Interim and draft plans, documents, and sketches, whether advance or preliminary copies, must be so identified.” Statutory exemptions sit at R.I. Gen. Laws § 5-8-21, which was not read here.
Can I seal electronically in Rhode Island?
Yes, but it depends on who is receiving the file. Section 1.3.1(E)(3): “The Board allows electronic signatures and/or seals on plans submitted to government agencies, such as municipalities and state agencies that accept electronic documentation and electronic signatures and seals as allowed by the Uniform Electronic Transactions Act adopted under R.I. Gen. Laws § 42-127.1-1, et seq.” No certificate authority, cryptographic standard or file format is named. The controlling law is Rhode Island’s UETA rather than a board-specific digital seal rule.
Does my firm’s certificate of authorization number go on sealed documents?
No. Firm registration is real: sole proprietorships, partnerships, limited liability partnerships, corporations and limited liability companies practicing engineering need a Certificate of Authorization under R.I. Gen. Laws § 5-8-24, and 430-RICR-00-00-1.4 governs issuance, expiration and renewal. But the COA has no seal of its own and nothing requires the COA number to appear on sealed documents. Checked § 1.4 and § 1.3.1(E) for such a requirement and found none.
What happens to my stamp when my Rhode Island registration expires?
You stop using it. Section 5-8-14 forbids a registrant to affix the seal to documents after the certificate of registration has expired, and separately forbids affixing it to work for which the registrant was not responsible or to aid another in evading the chapter. Expiration and renewal are governed by § 5-8-15, which was not read in full. Not addressed: nothing in 430-RICR-00-00-1 says the stamp must be surrendered or destroyed on lapse, suspension or revocation, and nothing says the serial number changes.
Does this Rhode Island rule cover land surveyors and architects too?
No. The Rhode Island Division of Design Professionals administers four separate boards, for professional engineers, architects, landscape architects and land surveyors, and each has its own RICR part. 430-RICR-00-00-1 is the engineering part and governs engineers only; the land surveyor and architect rules were not read here.
