Supplies associated with CPAP, BiPAP, and Oxygen therapies are designed to be disposable. Masks, tubing, filters, and headgear are not intended to last for an extended period of time. Using them past their recommended life span can jeopardize your therapy. Delicate silicone mask cushions can develop leaks, clogged filters can allow dust and pollen to be delivered into your airway, and over-stretched headgear can require over-tightening which in turn can cause pressure point pain. CPAS is pleased to offer a wide range of replacement parts to fit almost any modern machine. See our Replacement Parts Schedule for important length of use recommendations.