J-Tube seal
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Bend restrictors control bending of flexible pipelines, umbilicals and cables at rigid connection points, preventing damage during installation and operation by maintaining a defined minimum bending radius in subsea applications.
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J-tube bungs create an interference fit seal between the host line and J-tube bore, preventing loss of corrosion inhibitor.
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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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J-Tube seal

Diverless sealing for J-tube corrosion protection

J-tube seals prevent loss of corrosion inhibitor within the annulus between host line and J-tube bore, using a polyurethane interference fit seal installed during pull-in to protect pipelines offshore.

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Benefits

Reliable protection for J-tube systems

J-tube seals create an interference fit between the host line and J-tube bore, preventing corrosion inhibitor loss. Installed via integral clamps during pull-in, they require no subsea activation and maintain annulus integrity throughout offshore pipeline installation and operation.

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Diverless installation
No subsea installation or diver intervention required, as the seals are installed during pull-in operations, reducing operational complexity and improving offshore installation efficiency.
Corrosion protection
Prevents loss of corrosion inhibitor within the J-tube annulus, helping maintain pipeline integrity and reducing corrosion risk in subsea environments with acidic seawater conditions.
Interference fit
Polyurethane seal elements provide a secure interference fit between host line and J-tube bore, ensuring reliable sealing performance without requiring subsea activation.

Specifications

Applications

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