The seal manufacturer code as defined in the Annex 1C chapter 5.3 Sealing, is the code identifying a manufacturer of certified seals according to the standard EN 16882.
The Laboratory competent for Interoperabilty tests maintains and publishes the list of seal manufacturer codes on its web site (Requirement 401 of Annex 1C).
Communications regarding seal's activities (new manufacturers, new laboratories, ...) must be addressed to: jrc-iot@ec.europa.eu
NB. The requested seal manufacturer code will be inserted as soon we have received a copy of the corresponding certificate.
NB. Only EN 16882 certified seals are allowed to bear the T logo.
Workshops are not allowed to place a seal without T logo on smart tachographs after the expiry date of self-certification (Last use of seals without T logo)
As the seal shall be replaced every two years, no seals without T logo can be found on a smart tachograph more than two years after the expiry date of self-certification (Last use of seals without T logo).
Seals without T logo can still be installed on analogue and digital tachographs after the expiry date set out below. The certification requirement is compulsory on the smart tachographs only.
| Company Name | Code Value | Code Assignment Date | Expiry date of self-certification (Last use of seals without T logo in smart tachographs) | EN 16882 Certification Date |
| Royal Pack | RP | 18/05/2018 | 28/02/2022 | 15/11/2021 |
| Precintia Seguridad (formerly Precintia International) | PR | 29/06/2018 | 28/02/2022 | 27/01/2022 |
| Unisto AG | UN | 07/07/2018 | 28/02/2022 | 16/11/2021 |
| Bednorz GmbH | BP | 10/07/2018 | 28/02/2022 | 20/01/2022 |
| KISSLING ELEKTROTECHNIK GMBH | KE | 07/12/2018 | 28/02/2022 | 14/02/2022 |
| Dilogics Europa S.L. | DL | 27/06/2019 | 28/02/2022 | |
| Acme Seals Ltd | AS | 23/09/2019 | 28/02/2022 | 25/02/2022 |
| Mega Fortris Group | MF | 01/08/2022 | 13/07/2022 |
| Laboratory name | Website |
| AIMPLAS | www.aimplas.es |