This breast pump part connects to the motor and the rest of the other parts like connector, valve, protector.
Wash with gentle detergent soap and water. Do not soak in hot water for more than 30 seconds.
Air dry before assembly.
For added protection, sterilize using a UV sterilizer or with hot water (no more than 30 seconds).
Do not steam sterilize or subject to high heat for an extended period.