Subsea Connection Systems

Flowline Connection Systems

Our flowline connection systems provide cost-effective subsea connection solutions and are based on our proven Oceaneering® Grayloc® metal-to-metal sealing technology.

Vertical and Horizontal Connectors

Our vertical and horizontal connectors use a single drive screw and a standard API torque bucket for makeup by an industry-standard, remotely operated vehicle (ROV) torque tool. The vertical flowline connector does not require a bespoke installation tool, and provides an economical solution that requires fewer ROV trips to complete tie-ins.


API 6A, 17D, and 17R compliant

Small Footprint

Small footprint minimizes real estate occupied on subsea trees or infrastructure


Cost-effective, reliable, field-proven design

Easy Installation

Easy-to-install, diverless installation

Availiable Solutions

Turnkey jumper solutions available

Availiable Tooling

Connector intervention ROV tooling available

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Horizontal Connector

Our ROV-operated flowline connectors enable a fast and reliable connection between pipelines and flowlines to new production fields or field expansions.

Vertical Connection System video thumbnail
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Vertical Connector

Tie in your flowlines and pipelines to subsea infrastructures with our cost-effective, reliable, and easy-to-install flowline connectors.

170531 M5 Connector V2 1

Boost Efficiency and Reliability with Field-Proven Subsea Connection Solutions

Energy Product Webinar Series

Oceaneering's highly reliable M5 Connection System provides an easy-to-install solution, enabling injection of gas or chemicals into subsea infrastructure and serves as an access point for future intervention during the life of the field.

On demand

30 minutes

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Oceaneering offers best-in-class products and solutions, backed by unparalleled quality, reliability, and global support. Fill out the inquiry form to start a conversation today.