The Surelock McGill Sealed Keyring is designed for the higher security needs of prison type environments, including secure hospitals and detention centers, where unauthorised transfer of keys is a serious risk. Sealed keyrings ensure the best possible control of specific keys issued to individuals.

Special hydraulic tooling creates a permanent keyring seal preventing unauthorised key removal. This unique seal can be applied to a range of keyring sizes. Removal of the seal requires the special tooling to cut and destroy the seal and enable the authorised change of keys, a new seal can be applied to the same keyring.