ResMed AirFit F40 – Replacement Cushion

The ResMed AirFit™ F40 Replacement Cushion features innovative AdaptiSeal™ technology, combining soft, flexible silicone with an ultra-compact, under-the-nose design to provide a comfortable and secure seal throughout the night.

Designed to adapt to individual facial contours and movements, the cushion helps minimize unwanted air leaks without requiring excessive mask tightness. Its low-profile design eliminates pressure on the nasal bridge, reduces facial contact, and provides a less intrusive full-face CPAP experience.

Compatible with both the ResMed AirFit F40 and AirTouch F40 full-face masks, this replacement cushion allows users to enjoy the familiar feel of traditional silicone while maintaining the flexibility to switch between silicone and fabric cushion options.

Key Features & Technology

AdaptiSeal™ Technology – A Flexible, Secure Seal

The AirFit F40 features ResMed's AdaptiSeal™ technology, using soft, flexible silicone that adapts to facial contours and movement.

The cushion is designed to maintain a reliable seal throughout the night while reducing the need for excessive headgear tension, helping improve comfort and minimize unwanted air leaks.

Ultra-Compact Design – Minimal Facial Contact

Unlike traditional full-face masks that extend over the nasal bridge, the AirFit F40 cushion rests beneath the nose while covering the mouth.

This low-profile design reduces facial coverage, eliminates pressure on the nasal bridge, and provides an open field of vision. It's an excellent option for users who prefer a less bulky full-face mask.

Soft Silicone Cushion – Comfortable & Easy to Maintain

Made from soft, flexible silicone, the AirFit F40 cushion provides a smooth surface against the skin while adapting to individual facial features.

Its durable silicone construction allows for simple daily cleaning and maintenance, making it a practical option for regular CPAP therapy.

AirTouch F40 Compatibility – Interchangeable Cushions

The AirFit F40 and AirTouch F40 share the same mask platform, allowing users to interchange their replacement cushions without purchasing an entirely new mask.

Customers can choose between the AirFit F40's traditional silicone cushion and the AirTouch F40's ComfiSoft™ fabric-fused silicone cushion, depending on their comfort preferences.

Both cushions are compatible with the same F40 mask frame and headgear, making it easy to switch between the two options.

Available Sizes

• Small Wide (SW)
• Medium (M)
• Large (L)

View Sizing Guide

Choosing the correct cushion size is important for achieving a comfortable fit and reducing unwanted air leaks. The AirFit F40 and AirTouch F40 use the same cushion sizing guide.

For accurate results, print the sizing template at 100% scale (actual size).

Your Purchase Includes

• 1 × ResMed AirFit F40 Silicone Replacement Cushion (selected size)

Cleaning & Maintenance

Clean the cushion daily using warm water and mild liquid detergent. Rinse thoroughly and allow it to air dry away from direct sunlight.

Inspect the cushion regularly for signs of wear, damage, or deterioration. Replace it as needed to maintain a comfortable fit and effective therapy.