ALSEAMARSyntactic Foam Blocks

Custom Buoyancy Products

A Wide Range of Densities for Different Depths Depending the Need

In-house engineering and manufacturing from raw materials to finished products

Standards Blocks

For each depth or application, BMTI offers several ranges of references, advised by its team of experts to help the client make the right choice (technically and price-wise). ALSEAMAR delivers a full range of advanced epoxy-based syntactic foams engineered for critical subsea operations—from subsea vehicles to permanent deepwater structures.
Designed for use at depths up to 12,000 meters, BMTI’s materials combine low density, high mechanical strength, and long-term reliability under extreme pressure and environmental conditions.

High Performance Grade

density tolerance from ±5 to ±15 kg/m3

Very Low Density Grade

density tolerance from ±10 to ±15 kg/m3

Low Density Grade

density tolerance ±15 kg/m3

Standard Grade

density tolerance ±30 kg/m3

Selection Tool

Min:

Density

Max:

380 kg/m3

740 kg/m3

Min:

Density

Max:

23.72 lb/ft3

46.20 lb/ft3

Min:

Depth

Max:

1,000 msw

12,000 msw

Min:

Safety Factor

Max:

1.28

2.52

Buoyancy Calculator

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Insulation Foam Blocks

BMTI advanced insulation materials are designed to operate reliably at depths up to 4,000 meters and withstand service temperatures up to 140°C, making them ideal for deepwater flow assurance and subsea thermal insulation applications:

  • High glass transition temperature (Tg 110°C to 140°C) for structural integrity under heat
  • Excellent thermal stability under high hydrostatic pressure
  • High compressive strength
  • Superior hot-wet resistance, preventing water ingress and thermal degradation
  • Optimized for use with composite layers

High Thermal Grade

density tolerance from ±20 kg/m3

Fire Resistant Grade

density tolerance from ±40 kg/m3

Need help choosing the right foam ?

Please send the drawings to receive a quote.

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