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Hydrostatic Inflatable PFDs

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Used for over 10 years in Europe by Coast Guards and recreational boaters alike, the recently enhanced hydrostatic inflator developed by CM Hammar is exclusively available in North America from Mustang Survival.

Hydrostatic pressure is applied to objects submerged in water. The hydrostatic inflator needs only to be submerged 4 inches (10 cm) for the hydrostatic pressure to open a pressure valve releasing a firing mechanism, automatically inflating the PFD.

Low Maintenance
No inflator maintenance required for five years, unless fired.

Reliable Inflation
Inflates under hydrostatic pressure, the PFD will not inflate prematurely due to rain, humidity or water contact (the PFD can be inflated manually by pulling the activation cord).

Safety Inspection Window
Easily view the inflator replacement date and inflator status through the safety inspection window - green indicates ready for use.

Mustang Survival products using Hydrostatic Inflator Technology

US PATENT NO. 6,832,415 and patent pending

Deluxe Inflatable PFD
MD3183, MD3184 (with harness) US
MD3153, MD3154 (with harness) Canada

This PFD provides excellent safety, is designed for use in severe weather, and requires minimal maintenance.
  • Hammar 1F auto hydrostatic inflator is maintenance free for 5 years
  • Works on hydrostatic pressure; *inflates when submerged in 4” of water
  • Lightweight and comfortable design, and neoprene Comfort Collarâ„¢
  • 35 lbs of buoyancy when inflated
  • SecureZIPâ„¢ closure withstands rigorous activity and is easy to repack
  • Cylinder is inside bladder and protected against corrosion
  • Durable 420-Denier nylon and heavy duty coated nylon
  • Strobe light holder, safety whistle and SOLAS reflective tape
  • Backup oral inflation tube
  • Integrated sailing harness exceeds ORC standards (MD3184 and MD3154 only)
  • D-ring
  • Colors Red/Black, Carbon/Black

US Coast Guard Recreational Type II, US Coast Guard Commercial Type V (pending) under 46 CFR 160.064 and 160.076, TC/CCG APPROVED UL1180 WITH CANADIAN ADDENDUM (pending)
Adult Universal size - for persons at least 16 years of age and 80 lb or more, with chest size 30" - 52" (76 cm - 132 cm)