ResMed Oxygen Connector

Description

Quick answer: This is the genuine ResMed oxygen connector (part 51903) — the adapter that allows supplemental oxygen to be introduced into the air delivery circuit. It fits inline between the device and the tubing (or at the point specified in your device’s guide), providing a dedicated port for an oxygen supply line. Supplemental oxygen must only be used when prescribed, and following the safety sequence in your device’s user guide.

What’s included

• 1 × ResMed oxygen connector (part 51903)

Oxygen tubing, oxygen source, device, and mask not included.

About this part

When a clinician prescribes supplemental oxygen alongside PAP or ventilation therapy, the oxygen has to be introduced into the circuit at a defined point — not simply pushed in anywhere. The oxygen connector provides that point: it fits inline and gives a dedicated port where the oxygen supply line attaches, so the flow mixes into the delivered air correctly and the connection stays secure.

Using the genuine ResMed connector matters here, because fit, sealing, and the correct port design all affect how reliably the circuit holds pressure and how the oxygen is delivered.

Key features

• Genuine ResMed oxygen connector (51903) — correct fit and sealing.
• Dedicated oxygen port — a defined entry point for the supply line.
• Fits inline in the circuit — per the device’s user guide.
• Secure connection — maintains circuit integrity.
• Simple to fit — no tools required.

Specifications

Important oxygen safety notes

Supplemental oxygen must only be used when prescribed by a physician, at the prescribed flow rate. Follow your device’s user guide precisely, including the correct start-up and shut-down sequence — as a general rule, the device is turned on before the oxygen flow is started, and the oxygen flow is stopped before the device is switched off, so oxygen doesn’t accumulate inside the device.

Oxygen supports combustion. Do not smoke or allow open flame, sparks, or heat sources near oxygen equipment. Keep the oxygen source and tubing away from ignition sources, and do not use oil, grease, or petroleum-based products on or near oxygen fittings. Ensure the room is adequately ventilated. Always follow the instructions supplied with your oxygen source as well as your device’s user guide, and your clinical team’s directions.

Frequently asked questions

What does the oxygen connector do?
It provides a defined, sealed port for introducing supplemental oxygen into the air delivery circuit.

Does it come with oxygen tubing or an oxygen source?
No — the connector only. Oxygen tubing and the oxygen source are supplied separately.

Which devices does it fit?
ResMed oxygen connectors are device-specific — please confirm against the packaging, or contact us with your device model at (646) 933-0080 and we’ll check.

Do I need a prescription?
Supplemental oxygen is prescribed by a physician, including the flow rate. Do not add oxygen to your therapy unless it has been prescribed.

What’s the correct order for turning things on and off?
Follow your device’s user guide — generally the device is started before the oxygen flow, and the oxygen is stopped before the device is switched off. Confirm the exact sequence in your guide.

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.

Supplemental oxygen must be used only as prescribed by a physician, at the prescribed flow rate, and in accordance with the device’s user guide. Oxygen supports combustion — keep away from smoking, open flame, sparks, and heat sources, and do not use oil or grease near oxygen fittings.