Overview
MEGEL MG-650-MP is the marine-grade specification within the MEGEL silica aerogel felt range, type-approved under the IMO Marine Equipment Directive (MED) for shipboard insulation applications. Compared to the standard industrial-pipe MG-650-IP, the MP grade specifies a denser glass-fibre reinforcement (bulk density 200–240 kg/m³) and a tighter hydrophobicity tolerance (water uptake <2% by ASTM C1763), addressing the salt-spray exposure, vibration, and condensation conditions found on marine vessels and offshore platforms.
The defining performance characteristic is the −200 to +650°C service temperature window — a single felt material covers LNG cryogenic cargo containment systems at −163°C, ambient-temperature deck piping, and high-temperature steam and exhaust manifold insulation in the engine room. No other commercial flexible insulation material spans this range. The thermal conductivity at 25°C is 0.018–0.022 W/(m·K), measurably below still air, with performance retention validated to 10+ years of continuous salt-spray service in third-party testing.
MEGEL MG-650-MP is functionally equivalent to Aspen Aerogels Cryogel® Z for cryogenic service and Pyrogel® XTF for high-temperature marine applications, at a 35–50% landed cost discount and with IMO MED certification supplied as standard documentation.
Technical Specifications
| Property | Unit | Value |
|---|---|---|
| Reinforcement | — | Glass fibre mat (densified) |
| Bulk density | kg/m³ | 200–240 |
| Thermal conductivity at 25°C | W/(m·K) | 0.018–0.022 |
| Thermal conductivity at −150°C | W/(m·K) | 0.014–0.016 |
| Thermal conductivity at 200°C | W/(m·K) | 0.024–0.028 |
| Thermal conductivity at 400°C | W/(m·K) | 0.038–0.044 |
| Service temperature range | °C | −200 to 650 (continuous) |
| Hydrophobicity (water uptake, 24h immersion) | % | <2 |
| Water contact angle | ° | 135–150 |
| Fire classification (GB 8624) | — | Class A (non-combustible) |
| Marine certification | — | IMO MED type-approved |
| Standard roll dimensions | m | 1.0 × 10 or 1.5 × 6 |
| Available thicknesses | mm | 5, 6, 8, 10, 15, 20, 25 |
Applications
LNG Cargo Containment Systems
MG-650-MP is specified for secondary barrier insulation on LNG carrier Type B and Type C cargo containment systems, where cryogenic temperatures (−163°C) combined with vibration, hull flex, and the moisture-laden hold environment defeat conventional polyurethane foam or perlite insulation. The hydrophobicity (water uptake <2%) prevents ice-lens formation that would compromise insulation performance, and the flexible felt format accommodates hull-flex dimensional changes without cracking or delamination. Installations follow IGF Code requirements for fire integrity and IMO MED certification.
Engine Room Exhaust and Steam Lines
Main engine exhaust manifolds, turbocharger casings, and auxiliary steam piping in the engine room operate in the 250–550°C range with heavy vibration and water-spray exposure during cleaning operations. MG-650-MP felt at 15–25 mm wrapped on these surfaces — clad with 0.5 mm stainless-steel sheet — reduces engine-room ambient temperature, lowers HVAC load, and meets IMO fire-safety requirements for SOLAS-classified vessels. The single felt material can be used continuously from cold pipework to high-temperature exhaust without splice changes.
FPSO and Offshore Process Piping
Floating Production Storage and Offloading platforms and fixed offshore process facilities require insulation systems that resist salt spray, hydrocarbon contamination, and topside crane impact during routine maintenance. MG-650-MP's combination of cryogenic-rated lower service temperature and hydrocarbon process-temperature upper limit means a single insulation system covers wet gas piping, condensate lines, and high-pressure separator outlet manifolds. Corrosion-under-insulation (CUI) mitigation is enhanced by the hydrophobic surface — water cannot migrate to the substrate steel where it would drive accelerated corrosion.
Naval Vessel Compartment Insulation
Navy and coast-guard vessel hot pipework, fuel-handling lines, and ammunition magazine boundary bulkheads use MG-650-MP for thermal isolation combined with fire-resistance and weight optimisation. The thinner radial profile of aerogel felt versus mineral wool preserves crew-space and compartment volume in space-constrained vessel designs, and the non-combustible fire classification supports magazine-protection ratings.
Packaging & Storage
MG-650-MP is supplied as rolled felt with the same physical dimensions as MG-650-IP (1.0 × 10 m or 1.5 × 6 m), packaged in heat-sealed polyethylene film and reinforced corrugated cartons for ocean-freight handling. IMO MED type-approval certificate, batch CoA, and third-party thermal conductivity test report are supplied as standard documentation. MOQ is 50 m²; container shipments are typically 1,500–3,000 m² per 40' container depending on selected thickness.
Storage requirements are identical to MG-650-IP — dry storage below 40°C, no humidity restrictions. For shipboard inventory, sealed packaging should be maintained until installation to preserve the IMO MED chain-of-custody documentation. On-site cutting uses a sharp utility knife; the off-cuts can be repurposed for irregular geometries or recycled through shipyard waste streams.
Related Products
- MEGEL® Silica Aerogel — parent hub
- MEGEL MG-650-IP — industrial pipe variant, water uptake <5%
- MEGEL MG-650-OR — oil refining variant, 800°C peak service
- MEGEL MG-650-UH — district heating variant, lower temperature ceiling
- thermaleast.com aerogel-blanket — furnace and refractory aerogel blanket catalogue (SEMITECH sister site)
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