Amazon.com: Resmed AirFit F40 Full Face Replacement Cushion Medium Amazon.com: Replacement Silicone Cushion Frame for Airfit F40 with Snapklik.com : GJX 2 Packs Replacement Headgear For Airfit F40 Full Amazon.com: ResMed AirFit F40 Full Face Replacement Cushion Small. This replacement cushion is NOT manufactured by ResMed. This is a generic CPAP cushion seal that is compatible with the F40 series of full face CPAP masks. Facial oil buildup on the silicone will break down the consistency of the cushion over time and lead to mask leak. When this occurs, it is time to replace your F40 cushion. Please note this is NON OEM (original equipment manufacturer). The full face style implements a design that covers the nose and the mouth, allowing the user to breathe through both. Perfect Fit for AirFit F40 Mask Specifically designed as a compatible replacement cushion and headgear for the AirFit F40 CPAP mask, ensuring a secure and reliable fit. Soft Silicone Cushion Seal High quality silicone material creates a gentle yet effective seal to reduce leaks and improve overall CPAP therapy comfort. Adjustable & Secure Headgear Flexible headgear straps with Velcro style adjustments provide a personalized fit, preventing slipping during sleep. Comfortable for All Night Use Lightweight design reduces facial pressure points, making it easier to wear through the night without discomfort. Affordable Replacement Solution A cost effective alternative to OEM parts, offering quality, durability, and compatibility without the premium price. includes 1 Cushion (selective size) 1 Headgear 2 Magnetic clips