Blast Helmet
Blast Overpressure Protection HGU‑99/P
Blast Overpressure Protection HGU‑99/P
The HGU-99/P combines head protection, high-attenuation hearing protection and integrated communications in one platform, helping personnel operate more safely in dangerous, dynamic and extremely loud aircraft carrier flight deck environments, while also being positioned to deliver exceptional cranial blast overpressure attenuation.
Key features
- Maintains auditory situational awareness: integrated electronic hear-through supports situational awareness by recreating ambient soundscape at safe levels.
- Unified protection system: head, hearing, and communications integrated in one deployable platform.
- Range-ready durability: designed for repeated cycles, rough handling, and high-demand use cases.
- Operational simplicity: quick to brief, straightforward to don/doff, and easy to standardise across teams.
Three layers of hearing protection
The HGU-99/P provides three layers of passive hearing protection for high attenuation performance:
- Protective helmet shell with form-fitting edge seal
- Interior ear cups
- Optional ear plugs (for maximum noise reduction when required)
FAQs
Is it suitable for breaching and training?
Yes, the HGU‑99/P can be used in breaching operations and at training ranges.
Can it be worn with my existing kit?
In most cases, yes. J3Seven can advise on compatibility with your comms and protective equipment.
What sizes are available?
We’ll help you select the right sizing and configuration for your team during the process.
What are the lead times?
Lead times vary, contact J3Seven for current availability and delivery windows.
Protect hearing where it matters most.
Enquire now to equip your team with the HGU‑99/P, supplied and supported by J3Seven.

