What type of fittings are currently in use for the Oxygen mask?

The current use of bayonet fittings for oxygen masks is significant due to their secure connection and ease of use. Bayonet fittings are designed to provide a quick connection and disconnection, which is essential in emergency situations where time is critical. This design incorporates a simple locking mechanism that ensures a tight fit, preventing any accidental disconnection while maintaining a good seal.

In the context of emergency situations, such as those faced by rescue swimmers or in aviation, the reliability of the fit is paramount. The bayonet fitting facilitates quick donning of the mask and allows for swift responses, which is crucial for effective oxygen delivery.

Other types of fittings, such as screw, snap, and clamp fittings, may not provide the same level of assurance for immediate use or might be less intuitive in high-stress scenarios, potentially complicating the response time when oxygen is needed urgently. Bayonet fittings thus represent the optimal combination of speed, reliability, and ease of use in critical applications like oxygen therapy during emergencies.