Subsea Buoyancy Foam

LAST-A-FOAM® R-3312 and R-3318 are machinable, hydrostatic pressure-resistant foams that provide buoyancy underwater. Their closed-cell structure is engineered to resist penetration by water. Due to their pressure resistance to many fluids and resins, they are also used in resin-transfer molding as a core material. LAST-A-FOAM® R-3312 and R-3318 semi-submersible foams are optimal for shallow to mid-water underwater robotics applications.

These subsea polyurethane foams support training operations for the International Space Station, providing buoyancy for assembly components in pools that simulate weightlessness.

Note, the 1.9 x 3.4 x 4.8 in block is used on the BlueROV2 to provide buoyancy.

 

Features

  • Easy to machine, coat, and paint
  • Provides buoyancy with depths to 300 ft uncoated or 600 ft coated
  • Excellent compressive and insulation properties
  • Resistant to hydrostatic pressure
  • High impact resistance
  • Biologically Inert
  • Oil, grease, and solvent resistant
  • Cost-effective solution
  • Does not rot or decay
  • Performs in freshwater or saltwater
  • Compatible with many types of adhesive

Resources

Specifications

Parameter
R-3312: Density 12 lbs/ft3 192 kg/m3
R-3318: Density 18 lbs/ft3 288 kg/m3
R-3312: Specific Gravity 0.19
R-3318: Specific Gravity 0.29
R-3312: Tested Depth (uncoated) 300 ft 91 m
R-3318: Tested Depth (uncoated) 800 ft 244 m
R-3312: Tested Depth (coated) 600 ft 182 m
R-3318: Tested Depth (coated) 1600 ft 488 m
Sizes Available (1) 8 x 4 x 0.5 in
(2) 12 x 6 x 1 in
(3) 16 x 8 x 1 in
(4) 24 x 8 x 2.5 in
(5) 1.9 x 3.4 x 4.8 in
203 x 102 x 13 mm
305 x 152 x 25 mm
406 x 203 x 25 mm
610 x 203 x 64 mm
124 x 86 x 48 mm
Buoyancy (Lifting force) (1) 0.5 lb
(2) 2.1 lb
(3) 3.7 lb
(4) 14.0 lb
(5) 1.1 lb
210 g
950 g
1690 g
6330 g
512 g
Weight (in air) (1) 0.11 lb
(2) 0.53 lb
(3) 0.96 lb
(4) 3.73 lb
(5) 0.34 lb
52 g
238 g
434 g
1694 g
156 g
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