(Subsea Production Control Fluids)

High-performance, water-based hydraulic fluids. Oceanic HW500 fluids are used in open and closed loop Subsea Production control systems and as industry standard fluids are specified by equipment manufacturers. Oceanic HW500 series are compatible with each other and offer the same excellent technical performance. Fluids differ in glycol content to make sure optimal response times in all geographical regions. Variants of Oceanic HW500 fluids are also available for local/customer requirements (e.g. Oceanic HW500 P/XP/No Dye fluids).

Key Benefits

  • Maximum operation temperature 100°C/212°F
  • Excellent ferrous and non-ferrous corrosion protection properties
  • Resistant to microbial infection
  • Excellent extreme pressure and anti-wear lubrication properties
  • Fully compatible with Oceanic HW500 P Series, HW500 E Series, HW443 Series & HW700 Series & XT900
  • Manufactured to NAS 1638/AS 4059 class 6/6b-f or better cleanliness
  • Qualified to ISO13628-6/API 17F, approved for use by all major equipment manufacturers
  • Industry standard fluids, field-proven since 1984
  • Free Fluid Monitoring programme ensures lasting service life
Typical Physical PropertiesOceanic
HW 525
HW 540
AppearanceClear Blue FluidClear Blue Fluid
Specific [email protected]°C1.0391.06
Pour Point<-15°C (<5°F)<-25°C (<-13°F)
Kinematic Viscosity (cSt)
-20°C (-4°F)
0°C (32°F)
40°C (104°F)
Freeze Point-21°C (-6°F)
Complies with API
6A class R,S & T
48°C (-54°F)
Complies with all API
6A class P,R,S &T

Environmental Information

MacDermid maintains worldwide environmental approvals and can offer Oceanic Subsea Production control fluids suitable for use in every exploration and production region around the world. The current environmental status of Oceanic HW500 fluids in your area can be obtained from our environmental specialists.


Oceanic HW500 fluids should be stored in dry conditions, ideally out of direct sunlight. Normal storage temperature range is 5 to 40°C.

Material Compatibility

Oceanic HW500 fluids contain performance additives which ensure high levels of compatibility with materials typically used in subsea production control equipment. Extensive material compatibility tests have been performed with Oceanic HW500 fluids.

Ferrous metals (cast iron, carbon steel, low & high alloy steels, stainless steels…)Compatible
Non-ferrous metals (copper, brass, bronze and other metals and alloys*)…Compatible with alloys typically used in subsea production control equipment.
Avoid Zn, Cd, Pb and Mg metals. Aluminium should be hard anodised.
Coatings and ceramic materials Avoid porous coatings. Compatible with most ceramic parts. Check ceramic coatings.
Packaging & sealing materials
(elastomers and thermoplastics*)
Compatible with standard NBR, HNBR, FFKM, VMQ/FMVQ, CR, TFE/PTFE, PEEK.
Some FKM & AU/EU/PU have proven to be incompatible.
Umbilical hose liner thermoplasticsCompatible with Nylon 11, PE and Polyether ester copolymers.
Absorbent gasket materialsAvoid cork, leather, cotton impregnated materials.
PaintsAvoid painting internal surfaces
Cured epoxy, phenolic and nylon based paints are satisfactory. Avoid less resistant paints as they soften. Wash spillages immediately with water.
Filter elementsPolypropylene and glass fibre filter elements recommended over paper filters.
*As material compatibility varies from compound to compound and supplier to supplier, consult supplier for recommendations or request specific compatibility tests.

Get it now