Connecticut state law does not require that notaries obtain and use a seal. Even though the use of a seal is optional, state law does prescribe the format of the seal to be used. The notary seal must include the notary's name as it appears on the their certificate of appointment, the words "Notary Public" and "Connecticut" as shown in Fig. 1. State law does give the notary the option of having the words "My Commission Expires (commission expiration date)" appear on the seal. However, most notary's find that it is more practical to have their commission expiration date appear on a separate rubber stamp along with their name, and title of notary public.

All seals and stamps are obtained from private vendors at the notary's own expense and always remain the property of the notary. This is true even if the notary’s employer paid for these items. The only person who has the authority to possess and use a notary's seal and/or stamp is the notary whose name appears on the seal.

When using the seal, the impression should be affixed near, but not over, the notary's signature. The stamp bearing the words "My Commission Expires" should be placed below the notary's signature and the notary must write in the date on which their commission expires, unless the date appears on the stamp. It is important for the notary to remember that he/she must sign his/her name exactly as it appears on his/her certificate of appointment and notary seal.