ResMed AirFit™ F40 Replacement Cushion
Restore the minimalist, high-performance seal of your ultra-compact mask with the ResMed AirFit F40 Replacement Cushion. Featuring the advanced AdaptiSeal™ 100% silicone design, this genuine replacement part sits comfortably under the nose to eliminate nasal bridge sores while providing a brutally effective seal for mouth breathers. Don't let a degraded cushion compromise your therapy pressure; swap in a fresh seal to maintain peak respiratory support.
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Key Features
The F40 replacement cushion is engineered to provide a soft, flexible, and uncompromising seal for users who demand a minimalist footprint.
AdaptiSeal™ Silicone
Constructed from 100% medical-grade silicone that dynamically conforms to your unique facial contours for a leak-free experience.
Under-the-Nose Fit
Completely eliminates the rigid contact point on the nasal bridge, preventing the painful red marks and skin breakdown common with traditional masks.
QuietAir™ Venting
Integrated diffused venting technology breaks up exhaled air, radically reducing noise and drafts that disturb your partner.
Ultra-Compact Profile
Provides full-face coverage for mouth breathers while maintaining a wide-open field of vision for reading or wearing glasses.
Flexible Seal Integrity
Designed to maintain its grip even at high prescribed therapy pressures, ensuring you receive the full benefit of your CPAP.
Foolproof Connection
The cushion snaps effortlessly onto the F40 frame, making the transition from an old, oily cushion to a fresh one completely seamless.
What’s in the Box
Your package contains the exact medical-grade component required to refresh your minimalist setup.
AirFit F40 Replacement Cushion
Single replacement cushion in your selected size (S, M, L, or SW)
Protective Packaging
Sealed to ensure medical-grade hygiene prior to installation
Instruction Insert
Basic replacement, sizing, and daily care guidelines
Who is this best for?
Regularly replacing your cushion is a non-negotiable requirement for anyone who values a secure airway and healthy skin.
Mouth Breathers
Restores the expansive but soft seal needed to deliver your prescribed pressure when your jaw drops open during sleep.
Users with Nasal Bridge Pain
The under-the-nose design is the only logical choice for patients who cannot tolerate the pressure of traditional F20-style cushions.
Side Sleepers
The flexible AdaptiSeal is specifically designed to stay in place even when your face is pressed against a pillow, preventing "burping" air leaks.
Cleaning & Maintenance
Strict adherence to this routine is the only way to prevent the silicone from yellowing, hardening, and harbouring dangerous bacteria.
Daily Cleaning
- Disconnect the cushion from the frame every morning.
- Wash thoroughly in warm water using a mild, unscented detergent to strip away the acidic facial oils that destroy silicone.
- Rinse vigorously and allow it to air dry completely out of direct sunlight.
Weekly Deep Clean
- Soak the cushion for ten minutes in warm, soapy water.
- Inspect the silicone for micro-tears, cloudiness, or permanent odors.
- Air dry on a clean towel before reattaching it to the flexible F40 frame.
Replacement Schedule
- Cushion: Every 1 month (Strictly mandatory)
- Full Mask Frame: Every 6 months
- Headgear: Every 6 months
Need Help Choosing a Mask?
Our certified respiratory therapists are here to help you find the perfect machine for your needs. Get personalized guidance and professional fitting support.
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