Our hand-applied installation method eliminates the need for complex mould tooling, reducing installation time while ensuring long-term performance on even the most challenging subsea structures.

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ContraTherm® C55
ContraTherm® B35
ContraTherm® B35 is a tough, pour-in-place subsea insulation solution, providing reliable flow assurance and temperature stability up to 80 °C in high-pressure applications.
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ContraTherm® B85
ContraTherm® B85 is a flexible, pour-in-place insulation solution for ultra-deepwater subsea applications, providing flow assurance at high pressures and temperatures up to 204°C.
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ContraTherm® C25
ContraTherm® C25 is a lightweight, flexible syntactic silicone insulation system, providing proven thermal performance and flow assurance for complex subsea equipment in demanding conditions.
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Subsea insulation covers
Removable subsea insulation covers provide durable thermal protection while allowing operators to remove the cover when access to equipment is required for inspection or maintenance.
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Complex subsea structures benefit from ContraTherm® C55 insulation
Our customer, based in Scotland, required a mixture of fixed and removable subsea insulation for their field, which was in a high temperature and high pressure (HTHP) environment. The structure of their manifold was complex, comprising a series of non-standard geometries including numerous valves, sensors, pipework, and clamps. It demanded insulation with a material that could be applied by hand as it was not possible to apply mould tooling which application of other materials would require.
Thermal
Oil & gas
Case Study
November 22, 2021
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ContraTherm® C55 manifold insulation
Our customer required an insulation solution for a large manifold for use in a high temperature and high pressure (HTHP) environment. The challenging project schedule demanded an insulation solution to be supplied and installed within 35 days at various locations. However, this was later revised and our customer requested a reduction in the insulation schedule to help them meet their final completion deadline.
Thermal
Oil & gas
Case Study
December 7, 2021
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ContraTherm® C55 shrouds insulate complex subsea structures
Our customer required insulation for subsea gas field structures. The insulation needed to be removable to enable maintenance work so an engineered covered solution was preferred to standard wet insulation. We used ContraTherm® C55 shrouds to provide the insulation performance and mechanical properties required.
Thermal
Oil & gas
Case Study
June 12, 2021
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ContraTherm® C55 subsea insulation - a trusted solution
When looking for subsea insulation, operators must find a reliable solution to minimise the risk of failure. We have advanced solutions to suit different requirements.
Thermal
Oil & gas
News
January 2, 2024
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Why global operators choose ContraTherm® C55
Specifying subsea insulation presents a unique set of challenges. Extreme temperatures, high hydrostatic pressures, complex geometries, and long operational lifecycles all demand materials that perform reliably in harsh environments. For global operators, reducing risk and uncertainty is critical.
Thermal
Oil & gas
News
January 16, 2026
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AIS is a global leader in the engineering, manufacture and application of insulation and passive fire protection systems, as well as buoyancy and SURF (subsea, umbilicals, risers and flowlines) products.
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    • We are an ambitious business, commited to embracing innovation and solving our customers' challenges.
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    • Take a look at our latest news and view our case studies.
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    • Find out how we have evolved into a team of around 1,000 employees since starting out in 2007.
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ContraTherm® C55

Proven thermal protection for the most demanding subsea environments

Designed for high-temperature subsea applications, ContraTherm® C55 delivers proven thermal protection and reliable flow assurance in some of the world's most demanding offshore environments. With a track record spanning more than 25 years, this multi-layer syntactic phenolic composite system withstands operating temperatures of up to 150 °C and water depths of up to 3000 m.

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ContraTherm® C55
Benefits

High-performance subsea insulation

ContraTherm® C55 is designed specifically for thermal insulation applications for subsea production equipment. Based upon a phenolic resin system, it provides advanced temperature resistance of up to 150 °C and has proven hot/wet performance.

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Thermally efficient & light weight
Low density syntactic material provides high thermal efficiency whilst minimising the overall weight applied to structures.
Onsite adaptability
Pack-in-place solution suited to complex geometries and can accommodate late design changes with no impact on schedule.
Robust application
Robust application process allows for a high local content, lowering cost, providing schedule flexibility all whilst meeting high industry standards.

Specifications

Our hand-applied installation method eliminates the need for complex mould tooling, reducing installation time while ensuring long-term performance on even the most challenging subsea structures.

  • Total GS EN COR 226 compliant
  • ExxonMobil GP650801 compliant
  • ISO 12736:2023 wet thermal

Introducing ContraTherm® C55

Watch the video of Sales Manager Vicky James discussing C55's long track record, and why global operators choose it time and time again.

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Applications

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  • Christmas trees and flow control modules
    • High-temperature insulation for critical production equipment
  • Manifolds
    • Maintains flow assurance in complex, high-pressure subsea systems
  • PLETs, PLEMs, FLETs and ITAs
    • Provides reliable thermal protection for subsea pipeline infrastructure
  • Connector covers and doghouses
    • Hand-applied insulation for complex geometries without mould tooling
  • High-temperature subsea developments
    • Proven performance in deepwater and ultra-deepwater oil and gas projects.

Compare our solutions

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Description
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