Inspect this part before/after each session for any damage. This important part protects your pump and must be replaced if damage occurs.
Barrier parts are very durable, and unless damaged, torn, or lost, should last for the life of the product (about one year of normal use) when used as directed.
If you are experiencing a loss of suction, be sure to follow the proper assembly instructions by placing the barriers onto the backs of the breast flanges first. See instructions (on left) for details.