Ultima Forma’s composite over-wound vessel incorporates a continuous thin metal gas barrier to combine the weight efficiency of advanced composites with the permeability resistance of metal.

Our patented design delivers:

• Integrated bosses for seamless connection to the system
• Modular architecture for different capacities and configurations
• Conformal design potential to fit within available space
• Continuous barrier layer for ultra-low hydrogen permeability

• Gravimetric efficiency >12% possible for a 720 L tank
• 14% improvement in efficiency over typical composite designs
• Hydrogen permeability: 2.5 × 10⁻¹⁷ mol/m²·s·Pa
• Pressure tested to over 850 bar with proven containment performance

• More hydrogen per kilogram — extend range or endurance without adding weight
• Ultra-low leakage rates — maintain fuel quality and safety
• Customisable size and geometry — better integration into vehicles or vessels
• Reduced system mass — enabling higher payload or better fuel economy
• Proven in testing — ready for deployment in demanding environments