Pro Stamps offers the Ohio Notary Public stamp certified by the requirements of the Ohio Secretary of State.
R.C. 147.04 (eff. 9/20/2019): seal = Ohio coat of arms within a circle at least 3/4 in and not more than 1 in in diameter, surrounded by 'notary public'/'notarial seal' (or similar), the notary's name, and 'State of Ohio'. Overall size not capped. Ink stamp or embosser. Name may instead be printed near the signature. No ink color specified.