New HEED 3 HP 4500 psi hose model arriving November 2025 – preorder today.
The HEED 3 is a compact, lightweight, Category A self-contained breathing apparatus designed to improve survival chances during an unexpected water submersion. Developed for U.S. Navy helicopter pilots in 1979, this proven emergency breathing system continues to protect crews operating helicopters, fixed-wing aircraft, float planes, watercraft, and vehicles near water.
It offers a small footprint, light build, and simple operation — making it one of the most reliable EBS systems available.
When comparing top-rated Emergency Breathing Systems (EBS) for helicopter and over-water operations, both the Poseidon EBS MK II and the HEED 3 HP 4500 Series deliver compact performance and proven reliability. Each system is built for flight crews, offshore pilots, and SAR personnel who need a dependable emergency egress breathing device.
The Poseidon EBS MK II stands out with its carbon fiber 4500 PSI cylinder, providing approximately 3.4 cubic feet of air in a lightweight, durable design. The carbon fiber bottle offers exceptional strength without unnecessary weight, giving pilots more air supply in a smaller footprint. This design minimizes fatigue while maximizing duration during underwater egress or cabin flooding.
Compared to the HEED 3 HP 4500, which holds about 2.9 cubic feet, the Poseidon model provides a slight boost in air volume while maintaining the same high 4500 PSI pressure rating. The MK II’s streamlined second-stage regulator and flexible braided hose make it well-suited for rapid access in tight cockpits or while wearing a survival vest. Its low-maintenance design means no hydrostatic testing is required—only a standard 2-year inspection—making it ideal for fleet operators and commercial aviation units.
In short, the Poseidon EBS MK II offers a modern, high-capacity solution that balances durability, weight, and ease of use. For pilots or crew looking for the most advanced emergency breathing apparatus available, this carbon-fiber system is the preferred choice for both aviation survival and marine egress applications.
View the full specifications and order details here: Poseidon EBS MK II – 4500 PSI Carbon Fiber Cylinder
Product model: HEED 3 HP 4500 PSI, 2.9 cu ft Emergency Breathing Device with Holster. Manufacturer: Submersible Systems, Inc., Huntington Beach CA. Commercial Item / COTS status: Yes.
Specifications - HEED 3 4500 Series
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