The present invention relates to a CPAP system, comprising a flow generator (20), a humidifier, and a connector (60). The connector is adapted to interconnect an outlet (24) of the flow generator and an inlet of a tub of the humidifier. Furthermore, the connector (60) provides a channel (62) to deliver pressurized air from the flow generator (20) to the humidifier tub. The connector (60) also includes a first component and a second component that are adapted to be coupled to one another, wherein the first component includes an attachment structure adapted for attachment to the outlet (24) of the flow generator (20). The second component is a flexible sealing portion (66) comprising a bellows-type conforming face seal (72), which comprises an aperture (74) adapted to abut the inlet of the humidifier tub.
