A more thorough explanation:

A notarial seal is a mark made by a notary public on a document to show that they have verified the identity of the person signing it. There are different types of notarial seals:

A notary seal is a device, usually a stamp or embosser, that makes an imprint on a notarized document. It includes the notary's name, the state seal, the words “Notary Public,” the name of the county where the notary's bond is filed, and the expiration date of the notary's commission. This type of seal is ink-stamped onto documents and is therefore photographically reproducible.

Example: A notary public stamps a document with their notary seal to show that they have verified the identity of the person signing it.

An embossed seal is a notary seal that is impressed onto a document, raising the impression above the surface. It clearly identifies the original document because the seal is only faintly reproducible. This type of seal is required in some states and on some documents notarized for federal purposes.

Example: A notary public embosses a document with their embossed seal to show that they have verified the identity of the person signing it.

A rubber-stamp seal is a notary public's official seal that is ink-stamped onto documents and is therefore photographically reproducible. It includes the notary's name, the state seal, the words “Notary Public,” the name of the county where the notary's bond is filed, and the expiration date of the notary's commission.

Example: A notary public uses their rubber-stamp seal to stamp a document to show that they have verified the identity of the person signing it.