Rotary assembly for humidifier

A rotor assembly for a rotary drum type humidifier wherein two separate end members integrally formed of synthetic plastic material are mounted on a common shaft and each has a projecting circular row of fingers frictionally receiving the opposite ends of a resilient water pick-up annulus extending between the end members. The annulus may be removed from the assembly simply by removing a single spring metal fastener holding one of the end members on the shaft.