BlueROV2 Machined Buoyancy Foam


Subsea Buoyancy Foam machined specifically to maximize buoyancy on the BlueROV2. Increases vehicle stability and lifting capacity. Officially rated to 244 meters (800 ft) water depth.

Delivery time: 10 - 14 business days

In stock

SKU: FLOAT-R3318-BROV2-R1-RP Category:


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

This particular size is machined to fit perfectly into the BlueROV2 fairing and maximize the amount of available buoyancy. Upgrading to this machine foam adds a total of 500 grams (1 lb) of additional buoyancy. This adds more stability and payload capacity to the ROV. Unfortunately, the machining process is expensive so this block is quite a bit more expensive than the standard BlueROV2 buoyancy foam, available here.

R-3318 is manufacturer rated to 244 meters operation depth when uncoated.


  • Easy to machine, coat, and paint
  • 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

Additional information

Weight 0,25 kg
Dimensions 4 × 4 × 6 cm