A cartridge (100) for packaging a medicament and being suitable for use with multiple different types of dosing device is described, together with dosing devices and adaptors for dosing devices. The cartridge includes a generally tubular body (102) having an interior cavity (104), a closure member (106) disposed at a distal end of the body and comprising a sealing element (128), a piston member (108) disposed in the cavity to contain the medicament between the piston member and the sealing element (128), a coupling element (114) disposed at the distal end of the body for coupling the cartridge to a dosing device (200) or to an adaptor for a dosing device, and a seal arrangement (126, 129) for receiving a sealing element release member (214) of the dosing device or adaptor. The coupling element (114) is arranged for engagement with an engagement part (220) of the dosing device or adaptor to clip the cartridge (100) to the dosing device or adaptor (200) upon insertion of the cartridge to the dosing device or adaptor, and the seal arrangement (126, 129) is disposed distally with respect to the sealing element (128) and is arranged to form a seal around the release member (214 254) when the cartridge is coupled to the dosing device or adaptor.
