Electronics cooling
Data centre cooling loops: the maintenance programme
A data centre loop cannot be taken offline for a fluid check on a whim. See which parameters to trend, why conductivity leads, and what belongs in the plan.
Specialty coolants
LM-17 series
Dielectric immersion cooling fluids
A dedicated immersion-cooling range for data-centre server systems, developed around electrical insulation, thermal and oxidative stability and yellowing resistance. The catalogue states the fluids contain no corrosive sulfur.
GLACIER / PRODUCT SAMPLE
CATALOGUE TEMPERATURE REFERENCELM-17A: 0 to +100°C · LM-17B: −5 to +100°C · LM-17C: −30 to +100°C (product list, April 2026)
Formulation
Modified hydrocarbons
A closer look.
- Server immersion cooling
- Electrical-insulation properties
- Thermal and oxidative stability focus
- Breakdown voltage as stated in the catalogue
Model and property references
- LM-17A operating range
- 0 to +100°C
- LM-17B operating range
- −5 to +100°C
- LM-17C operating range
- −30 to +100°C
- LM-17A breakdown voltage
- 65.6 kV, catalogue reference
- LM-17B breakdown voltage
- 74.5 kV, catalogue reference
- LM-17C breakdown voltage
- 84.3 kV, catalogue reference
- LM-17C viscosity at 20°C
- 3.42 cP
LM-17 series catalogue reference values (Table 15)
| Model | Pour point (°C) | Viscosity (cP) | Density (g/cm³) | Specific heat (cal/g·°C) | Thermal conductivity (W/m·K) | Flash point (°C) | Breakdown voltage (kV) |
|---|---|---|---|---|---|---|---|
| LM-17A | ≤−50 | 21.13 | 0.889 | 0.429 cal/(g·°C) = 1.79 kJ/(kg·K) | 0.112 | 136 | 65.6 |
| LM-17B | ≤−47 | 14.97 | 0.884 | 0.424 cal/(g·°C) = 1.77 kJ/(kg·K) | 0.109 | 138.5 | 74.5 |
| LM-17C | ≤−40 | 3.42 | 0.848 | 0.427 cal/(g·°C) = 1.79 kJ/(kg·K) | 0.112 | 107 | 84.3 |
All properties are printed at 20°C. The operating range for each model is listed above.
LM-17A–C immersion properties (mfr. BESS liquid-cooling document)
| Property | LM-17A | LM-17B | LM-17C |
|---|---|---|---|
| Base fluid | Hydrocarbon | Hydrocarbon | Hydrocarbon |
| Pour point (°C) | −50 | −47 | −40 |
| Electrical conductivity (µS/cm) | 0 | 0 | 0 |
| Compatible metals | Carbon steel, copper, aluminium, stainless steel | ||
| Flammability | Non-flammable | Non-flammable | Non-flammable |
| Application | Immersion cooling, non-phase-change heat transfer | ||
| Flash point per catalogue (°C) | 136 | 138.5 | 107 |
From the manufacturer's BESS liquid-cooling document. It states these fluids as non-flammable; the catalogue prints a flash point for each model.
Reference values from the Chaoyang Guangda LM catalogue — typical figures rather than guaranteed limits. Confirm the exact model and concentration on the current model TDS before specifying.
View source: catalogue p.28 (PDF p.32)Before you specify
Operating ranges are from the manufacturer's product list, April 2026. Confirm electrical test methods, equipment approvals and compatibility with every wetted material for the model you specify.
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