Quick answer
Immersion cooling fluid suppliers in our sourced profiles: Engineered Fluids, Submer, Shell, Chemours. Single-phase fluids stay liquid; two-phase fluids boil and condense. Fewer qualifications are published than for PG25, so ask for hardware compatibility data. Request quotes with the form below.
Key takeaways
- Single-phase: hydrocarbon or synthetic dielectric fluids.
- Two-phase: engineered fluids that boil at low temperature.
- Ask for hardware and material compatibility data.
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On this page
Supplier shortlist
| Supplier | Product(s) | Publicly reported qualification | HQ |
|---|---|---|---|
| Engineered Fluids | ElectroCool single-phase immersion dielectric coolants | Not published | Tyler, Texas, USA |
| Submer | SmartCoolant synthetic single-phase immersion fluid (alongside immersion systems) | Not published | Barcelona, Spain |
| Shell | Shell DLC Fluid S3 (PG25, meets OCP PG25 specification, freeze protection −10 °C, green fluorescent dye, free of 2-EHA, borate and silicate); single-phase immersion cooling fluids | Shell DLC Fluid S3 reported as NVIDIA DSX Ready (Oct 2026); immersion fluids Intel Data Center Certified for Immersion Cooling (4th/5th Gen Xeon) | London, United Kingdom |
| Chemours | Opteon 2P50, a developmental two-phase immersion dielectric fluid (HFO-based) | Chemours reports qualification work with Samsung SSDs and 2CRSi servers | Wilmington, Delaware, USA |
Taken from our sourced supplier profiles (October 2026). Open a profile for the citations. "Not published" means we could not find a public source.
Single-phase vs two-phase
In single-phase immersion the fluid stays liquid and is pumped through a heat exchanger. In two-phase immersion the fluid boils on the hot components and condenses on a coil. In our profiles, Engineered Fluids, Submer and Shell offer single-phase fluids, and Chemours's Opteon 2P50 is a developmental two-phase fluid. More in direct-to-chip vs immersion.
Related tool
Comparing data-center fluids?
Open comparator →What to ask an immersion fluid supplier
What to ask an immersion fluid supplier
- Server or component certifications (for example Intel's immersion certification, reported for Shell).
- Material compatibility with cables, seals and labels.
- Dielectric strength, viscosity, flash point and expected life.
- Volumes per tank, lead time and take-back or recycling.
Comparing with cold-plate fluids? See PG25 coolant suppliers and the comparator.
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Get the checklist →Frequently asked questions
Who makes ElectroCool?
Engineered Fluids, based in Tyler, Texas, per our sourced profile.
Is two-phase immersion fluid widely available?
Chemours describes Opteon 2P50 as developmental. Ask suppliers about current availability.
How we source this page
- Facts come from manufacturer pages, datasheets, owner's manuals and standards bodies, linked under Sources.
- We do not test products, and no brand pays to be listed or ranked. Advertising and affiliate links are labelled and never change the data.
- Anything we could not find is marked "not published" rather than guessed. Spotted an error? Tell us.