Tough, corrosion proof, and rated for 1,000m, these plastic spheres are a low-cost pressure case alternative. Seals with a single o-ring face seal. Comes with 4 tapped connector ports. 10” Polystyrene Instrument sphere, with 4 tapped and spot-faced 7/16-20 holes, 3 dummy plugs, a vacuum port (self-sealing), and 1 set G104/105 mounting ring and plate. Provides 11.5-lbs buoyancy in seawater.
Fused flotation-only spheres also available (IFS-142).