Issue Date: June 2025
Revision: 01
Doc No: ACS-TDS-HY-AW
Aerosil Hydro AW
Anti-Wear Hydraulic Fluid (HLP)
1. Product Description
2. Typical Physical & Chemical Properties
Typical values — not to be used as specification limits. Test methods per ISO/ASTM/DIN standards.
| Property | ISO 32 | ISO 46 | ISO 68 | ISO 100 |
|---|---|---|---|---|
| Kinematic Viscosity @ 40°C (mm²/s) | 28.8–35.2 | 41.4–50.6 | 61.2–74.8 | 90–110 |
| Kinematic Viscosity @ 100°C (mm²/s) | 5.4 | 6.8 | 8.7 | 11.4 |
| Viscosity Index | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 |
| Density @ 15°C (kg/m³) | 860 | 868 | 875 | 882 |
| Flash Point COC (°C) | ≥ 180 | ≥ 185 | ≥ 190 | ≥ 200 |
| Pour Point (°C) | ≤ −24 | ≤ −24 | ≤ −21 | ≤ −18 |
| Zinc Content (ppm) | 900–1100 | 900–1100 | 900–1100 | 900–1100 |
| Copper Corrosion (3h/100°C) | 1b | 1b | 1b | 1b |
| Water Separability (54°C, min) | ≤ 30 | ≤ 30 | ≤ 30 | ≤ 30 |
| Foam Tendency Seq I/II/III (ml) | ≤ 20/0/20 | ≤ 20/0/20 | ≤ 20/0/20 | ≤ 20/0/20 |
| Air Release (50°C, min) | ≤ 5 | ≤ 6 | ≤ 8 | ≤ 10 |
| Filterability (Dry, %) | ≥ 85 | ≥ 85 | ≥ 85 | ≥ 85 |
3. Performance Features & Benefits
- Zinc-based anti-wear (AW) package — protects pump components under high pressure and load
- Excellent oxidation stability — resists oil degradation and sludge formation at elevated temperatures
- Outstanding rust and corrosion protection for ferrous and non-ferrous metals
- Rapid water separation (demulsibility ≤ 30 min at 54°C) — prevents emulsification in wet environments
- Low foam tendency and fast air release — maintains consistent hydraulic response
- Good filterability (dry and wet) — compatible with fine filtration systems down to 3 µm
- Compatible with standard hydraulic seals (NBR, FKM, PTFE)
4. Applications
- High-pressure industrial hydraulic systems (vane, piston, gear pumps)
- Machine tools, presses, injection moulding machines
- Steel mill hydraulics and heavy industrial equipment
- Circulating oil systems and servo-hydraulic systems
- Centralised hydraulic power units operating at moderate temperatures
5. Approvals & Specifications Met
6. Packaging
- 20 L Pail
- 208 L Drum
- 1000 L IBC
Custom pack sizes available on request.
7. Storage & Handling
Store in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Keep containers sealed. Shelf life: 36 months in original sealed container.
Avoid prolonged skin contact. Use nitrile gloves and safety glasses during handling. Do not mix with other hydraulic fluids. Refer to SDS for full guidance.
8. Health, Safety & Environment
A Safety Data Sheet (SDS) is available upon request and must be consulted before use. This product is not classified as hazardous under CLP/GHS regulations at normal operating conditions. Dispose of used oil in accordance with local environmental regulations. Do not discharge to drains, water courses, or soil. Contains zinc compounds — refer to SDS for environmental precautions.
Disclaimer: The information contained in this Technical Data Sheet is based on tests believed to be reliable and is offered in good faith. The data is typical of the product and should not be used to establish specification limits. Aerosil Chemsol Specialties B.V. reserves the right to modify product formulations and specifications without prior notice. Users should verify suitability for their specific application. Aerosil Chemsol Specialties B.V. accepts no liability for any loss or damage arising from the use of this information.