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OCEANIC HW 525 Subsea Production Control Fluid

OCEANIC HW 525 is a high performance, water-based hydraulic fluid for use in open and closed loop subsea production control systems.

MacDermid maintains worldwide environmental approvals and can offer OCEANIC & PELAGIC subsea production control fluids suitable for use in every exploration & production region around the world.

Key Benefits


OCEANIC HW 525 is an industry standard fluid approved for use by major equipment manufacturers and offers excellent technical and environmental performance. Stable up to 100°C / 212°F and suitable for some operations at 100°C, this fluid is specified for wells with downhole temperature ≤90°C / 194°F including a comfortable safety margin. Oceanic HW 525 offers high compatibility with other materials typically used in subsea production control equipment.  


  • Quality tested and certified to industry standards 

Designed for use in most subsea production control systems and quality tested in accordance with ISO 13628-6 Annex C

  • Global environmental compliance

Meets environmental discharge regulations

  • Extended operational fluid life and outstanding stability with high seawater ingress

Resistant to microbial infection and no solids formation in hydraulic lines even with 30% seawater contamination

  • Excellent corrosion protection and lubrication properties

Ideal for established projects with long design life (≥25 years)



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