EAL grades for regulated waters.
Eleven biodegradable products for stern tubes, deck hydraulics and gearing — the oil-to-sea interfaces that regulators look at first.
Why this matters in US waters
Under the US EPA Vessel General Permit, vessels operating in US waters must use an Environmentally Acceptable Lubricant at every oil-to-sea interface — stern tube, thrusters, controllable pitch propellers, rudder bearings, deck machinery — unless it is technically infeasible. A conventional mineral oil in a stern tube is the most common way to fall outside the permit.
Check the current permit text for the requirements that apply to your vessel and trading pattern.
What EAL means
- Readily biodegradable
- Minimally toxic to aquatic life
- Not bioaccumulative
Our BIO HLP and Stern M grades are tested to a partition coefficient of Log Pow < 3 (OECD 117).
BIO HLP EAL — Hydraulic
Deck hydraulics, steering gear, hatch covers and controllable pitch propeller systems. Ester base stocks, servo-valve compatible.
| Product | ISO VG | Density 15°C | KV 40°C | KV 100°C | VI | Flash °C | Pour °C |
|---|---|---|---|---|---|---|---|
| BIO HLP EAL 32 | 32 | 0.910 | 32.00 | 6.110 | 140 | 183 | -54 |
| BIO HLP EAL 46 | 46 | 0.904 | 46.00 | 7.850 | 140 | 183 | -36 |
| BIO HLP EAL 68 | 68 | 0.914 | 68.00 | 10.43 | 140 | 183 | -36 |
Rust A&B: Pass (ASTM D665) · Log Pow < 3 (OECD 117)
BIO GEAR EAL — Gearing
Deck cranes, winches and enclosed gearing where a readily biodegradable fluid is required.
| Product | ISO VG | Density 15°C | KV 40°C | KV 100°C | VI | Flash °C | Pour °C |
|---|---|---|---|---|---|---|---|
| BIO GEAR EAL 150 | 150 | 0.983 | 150.0 | 19.25 | 146 | 286 | -42 |
| BIO GEAR EAL 220 | 220 | 1.000 | 220.0 | 25.45 | 146 | 286 | -39 |
Stern EAL — Stern tube
Stern tube and thruster bearings — the single largest oil-to-sea interface on most vessels.
| Product | ISO VG | Density 15°C | KV 40°C | KV 100°C | VI | Flash °C | Pour °C |
|---|---|---|---|---|---|---|---|
| Stern EAL 100 | 100 | 0.929 | 100.0 | 18.10 | on request | on request | -40 |
| Stern EAL 150 | 150 | 0.958 | 150.0 | 22.00 | on request | on request | -32 |
| Stern EAL 220 | 220 | 0.963 | 220.0 | 29.00 | on request | on request | -28 |
Stern M — High viscosity index
Stern tube duty where a very high viscosity index is preferred across a wide temperature range.
| Product | ISO VG | Density 15°C | KV 40°C | KV 100°C | VI | Flash °C | Pour °C |
|---|---|---|---|---|---|---|---|
| Stern M 100 | 100 | 0.921 | 100.0 | 16.63 | 180 | 170 | -24 |
| Stern M 150 | 150 | 0.928 | 150.0 | on request | 190 | 165 | -18 |
| Stern M 220 | 220 | 0.931 | 220.0 | on request | 200 | 163 | -12 |
Log Pow < 3 (OECD 117)
Typical values from Sinova Group technical data sheets (Form 002-EN, 5 January 2025). Typical properties are based on current production and may vary within specification.