Engineered Syntactic Systems SF-25 Subsea Macrosphere Syntactic Void Filler

The four part SF-25 kit was developed specifically to meet the critical needs of void space filling at operating pressures to 1000 psi. This system utilizes carbon fiber reinforced epoxy macrospheres in combination with the standard microsphere syntactic to provide low density lling, yielding a greater than 60% increase in buoyancy per cubic foot. In this system, cavities are pre-filled with the ~ 0.625 inch diameter macrospheres, specially fabricated to withstand the operating hydrostatic pressure of the vessel. The liquid syntactic is then injected into the cavities around the macrospheres and allowed to cure at room temperature. The resultant low-density system will provide an average of 39 pounds of buoyancy per cubic foot of void space.