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Polyurethane Subsea Buoyancy Foam


 LAST-A-FOAM® R-3300 BUOYANCY FOAM SERIES

LAST-A-FOAM® R-3300 is a closed-cell, hydrostatic pressure-resistant polyurethane foam that provides buoyancy to depths of up to 1,200 feet. It is supplied uncoated, however customers may coat the material to significantly increase its depth performance.*

This semi-submersible foam is engineered to resist penetration by water, and is optimal for shallow to mid-water subsea buoyancy systems, marine and underwater robotics applications. Due to its pressure resistance to many fluids and resins, it is also used in resin-transfer molding as a core material.

*Depth test of the coated R-3300, 25 pcf foam  demonstrated a depth tolerance of 2,400 feet . The coating used for this depth test was K5™ Abrasion Resistant Spray Applied Elastomer. Click here to view the K5™ tech data sheetCoating was applied by third party.

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Advantages

  • Easy to machine, coat*, and paint
  • Provides buoyancy with depths to 1,200 feet (366 meters) uncoated*
  • Dimensionally stable
  • 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 adhesives

Applications

  • Underwater buoyancy
  • Underwater robotics (ROV/AUV)
  • Semi-submersible craft
  • Pipeline flotation
  • Subsea mooring buoyancy
  • Buoyancy for assembly components in weightlessness simulation pools
  • Underwater pumps for offshore drilling rigs
  • Core material for resin-transfer molding

SIZING CHART

ENGLISH UNITS

Products Density
(lbs/ft3)
Height
(in.)
Width
(in.)
Length
(in.)
Tested Depth
(ft.)(uncoated*)
R-3312 12 10 24 100 300
R-3312 12 14 18 100 300
R-3315 15 10 24 100 700
R-3315 15 14 18 100 700
R-3318 18 10 24 100 800
R-3318 18 14 18 100 800
R-3325 25 10 24 100 1200
R-3325 25 14 18 100 1200

METRIC UNITS

Products Density
(kg/m3)
Height
(cm)
Width
(cm)
Length
(cm)
Tested Depth
(m)(uncoated*)
R-3312 192 25 60 250 91
R-3312 192 35 45 250 91
R-3315 240 25 60 250 213
R-3315 240 235 45 250 213
R-3318 288 25 60 250 244
R-3318 288 35 45 250 244
R-3325 400 25 60 250 366
R-3325 400 35 45 250 366

Shown are maximum standard sizes based on density. Custom sizes are available. Cut sizes are available from 3.175 mm up to standard stock heights as listed above.