Inogen One G5 cannula barb connector detail

Cannula Barb Inogen G5 and Output filter Tool

Inogen One G5 Cannula Barb

Genuine Inogen One G5 cannula barb — the connector that seals your cannula to the device.

Rated 5 out of 5 based on 2 customer ratings

(2 customer reviews)

Check price

Exclusive price

Your best price on WhatsApp Call for your best price

Genuine, new Inogen · Ships from Miami, FL

Call (786) 755-8063

Genuine Inogen One G5 cannula barb (RP-505)
Connects your nasal cannula to the device outlet
Secure, leak-resistant seal for steady oxygen delivery
Sits above the output filter for easy access
Replace about once a year (or if loose or cracked)
Free shipping on orders $99+

Authorized Inogen Dealer

Inogen’s US dealer policy does not allow authorized dealers to publish prices for new equipment or to complete the purchase online. That is why you see “Check price” instead of a number — it is not a site error.

To get your price, call (786) 755-8063, message us on WhatsApp, or use the chat. We’ll send you a formal quote or an invoice by email, and we ship nationwide from Miami.

Genuine Inogen One G5 cannula barb (RP-505)
Connects your nasal cannula to the device outlet
Secure, leak-resistant seal for steady oxygen delivery
Sits above the output filter for easy access
Replace about once a year (or if loose or cracked)
Free shipping on orders $99+

Genuine productFree shipping on orders $99+Ships from Miami, FLExpert help · (786) 755-8063

Secure checkout

VISAAMEXDISC●VER Affirm

Brand: Inogen
SKU: RP-505
Category: Filters

Description
Reviews (2)

In short

A secure, leak-free connection

The RP-505 is the genuine Inogen One G5 cannula barb — the outlet connector that attaches your nasal cannula to the concentrator for a secure, leak-resistant seal. It is not a filter. Inogen recommends replacing it about once a year. For the Rove 6, use the RP-506 barb instead.

The cannula barb is small but essential: it holds your cannula firmly so oxygen reaches you, not the room. A fresh barb keeps the seal tight after months of connecting and disconnecting.

✅ Inogen One G5 ❌ For the Rove 6, use the RP-506 cannula barb

Shop the compatible concentrator: Inogen One G5

Secure, leak-resistant fit

Holds the cannula firmly so oxygen flows to you without gaps or leaks.

Quick DIY replacement

Swap it in minutes when you change the output filter beneath it — no service visit.

Genuine Inogen part

Made to the G5 outlet spec for a firm hold without pliers or tools.

Details

What's included

One genuine Inogen One G5 cannula barb (RP-505). Tubing and cannula are not included.

Why genuine matters

The genuine barb is sized to seal the G5 outlet and the output-filter channel behind it. A loose or off-spec barb can leak oxygen or fail to seal the filter properly.

Frequently asked questions

Is the cannula barb a filter?

No. It is the connector that attaches your cannula to the device outlet. The output filter (RP-410) sits directly behind it.

How often should I replace it?

Inogen recommends replacing it about once a year, or sooner if it loosens, cracks, or won't hold a secure seal.

I have a Rove 6 — is this the right part?

For the Rove 6, use the RP-506 cannula barb instead. The RP-505 shown here is for the G5.

Do I need a tool to change it?

No pliers are needed. To reach the output filter beneath it, the RP-404 tool helps lift the barb cleanly.

Not sure this is the right part?

Send us a photo or call — we'll confirm the exact part for your unit.

Call (786) 755-8063

2 reviews for Inogen One G5 Cannula Barb

5.0

Based on 2 reviews

100

100%

Rated 5 out of 5

Deb (verified owner) – 31 July, 2026

Thank you for having the supplies I needed.
Rated 5 out of 5

Nora David (verified owner) – 29 April, 2025

We asked for another one and never received
Please contact us to ask for a second one
Thanks