MacDermid OCEANIC HW 443 is a high-performance, water-based hydraulic control fluid formulated for open-loop and closed-loop subsea production control systems and Blowout Preventer (BOP) control systems.
Engineered for demanding high-temperature well applications, OCEANIC HW 443 remains stable at temperatures up to 145°C and is specified for high-temperature wells with downhole temperatures up to 135°C, providing an additional operating safety margin.
The fluid contains a fluorescent dye to support leak detection and offers high compatibility with materials commonly used in subsea production control equipment. Its technical and environmental performance makes it suitable for offshore production systems requiring reliable hydraulic operation under challenging subsea conditions.
Key features:
High-performance, water-based hydraulic control fluid
Suitable for open-loop and closed-loop subsea control systems
Suitable for Blowout Preventer control systems
Stable at temperatures up to 145°C
Specified for wells with downhole temperatures up to 135°C
Fluorescent dye assists with leak detection
Excellent corrosion protection and lubrication properties
Resistant to microbial contamination
Maintains stability where seawater ingress occurs
Compatible with materials typically used in subsea equipment
Suitable for high-temperature offshore oil and gas applications
Manufactured by MacDermid Offshore Solutions
OCEANIC HW 443 is the fluorescent-dyed standard product. Confirm that this version—not OCEANIC HW 443 R or OCEANIC HW 443 ND—is required for your system before ordering. Always consult the current technical data sheet and Safety Data Sheet before handling, storage or use.
