Polyurethane Subsea Buoyancy Foam

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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 typically supplied uncoated.

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.

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
Max use temperature of 230°F (110°C)

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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

PRODUCT SIZING CHARTS

ENGLISH UNIT (in) METRIC UNIT (cm)

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

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

Shown are maximum standard stock based on density. Custom sizes are available. Cut sizes are available from 0.125 inches (3.175mm) up to standard stock heights as listed above

Related Resources

Technical Papers

Composite Core: Factors to Consider When Choosing Core Material for Your Application

Case Applications

Next Generation Underwater Systems Provides Advancement in Design, Functionality, and Capability with Subsea Buoyancy Foam

Blog

General Plastics’ Polyurethane Foams Show Value in Subsea and Marine Applications