Description
Quick answer: This is the genuine ResMed replacement InfinitySeal™ silicone cushion for the AirFit N20 nasal mask — the adaptive cushion that seals over the nose and gives the N20 its forgiving fit across a wide range of faces. The cushion is the part that seals and wears fastest, so replacing it on schedule is the single most effective way to stop leaks and stop over-tightening your headgear. Available in Small, Medium, and Large. Frame and headgear not included.
What’s included
- 1 × AirFit N20 InfinitySeal silicone cushion (in your selected size)
Frame and headgear not included.
About this part
The cushion does the actual sealing work on the mask, and it’s a consumable by design. The N20’s InfinitySeal™ cushion is engineered to adapt to a wide range of facial contours and to seal across the range of therapy pressures — which is a big part of why the N20 fits so many people in just a few sizes.
But silicone softens, stretches, and loses its shape with nightly use, facial oils, and repeated washing. The wear is gradual, so most people don’t notice the cushion itself — they notice they’re tightening the headgear more and more to stop leaks. That’s the tell: the straps aren’t the problem, the seal is. A fresh cushion restores the original adaptive fit at normal strap tension.
This is the silicone InfinitySeal cushion for the AirFit N20. (The AirTouch N20, which shares the N20 frame, uses a memory-foam UltraSoft cushion instead — that’s a different cushion.)
Key features
- Genuine ResMed InfinitySeal™ cushion — for the AirFit N20 nasal mask.
- Adaptive silicone seal — conforms to a wide range of faces.
- Restores a proper seal — stop over-tightening your headgear.
- Three sizes — Small, Medium, Large.
- Easy to swap — clips into the N20 frame; no tools.
Specifications
| Specification | Detail |
|---|---|
| Product type | Replacement nasal mask cushion |
| Compatible mask | ResMed AirFit N20 (nasal) |
| Cushion | InfinitySeal™ silicone |
| Sizes | Small, Medium, Large |
| Included | Cushion only |
| Not included | Frame, headgear |
| Related | AirTouch N20 uses a memory-foam (UltraSoft) cushion — different part |
| Prescription | No |
| Brand | ResMed |
Care & replacement
Wash the cushion daily in warm water with a mild soap, rinse thoroughly, and air dry away from direct sunlight — facial oils degrade silicone fastest. Replace it roughly every 1–3 months, or sooner if it feels sticky or stiff, looks cloudy or discoloured, has lost its shape, or if you find yourself tightening the headgear to stop leaks.
Frequently asked questions
What’s included?
The cushion only — the frame and headgear are not included.
Which mask does it fit?
The ResMed AirFit N20 nasal mask.
Which size do I need?
Match your current cushion size — Small, Medium, or Large. Use the ResMed AirFit N20 sizing guide if you’re unsure.
Is this the same as the AirTouch N20 cushion?
No — the AirFit N20 uses this silicone InfinitySeal cushion; the AirTouch N20 uses a memory-foam UltraSoft cushion. They share the frame, but the cushions are different.
How often should I replace it?
Commonly every 1–3 months, or sooner if it’s discoloured, misshapen, sticky, or leaking.
My mask leaks — do I need a whole new mask?
Usually not. A worn cushion is the most common cause of leaks, and replacing it costs a fraction of a new mask.
Do I need a prescription?
Replacement cushions are generally available without a prescription. Contact us if you’re unsure.
Can I get it delivered in Brooklyn or shipped nationwide?
Yes — Stark Medical Supplies offers local pickup and delivery in Brooklyn and across NYC, plus USPS shipping throughout the continental U.S.
Use this part with your ResMed AirFit N20 mask according to the mask’s user guide.
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