Description

Sinopec Ester-based Fire-resistant Hydraulic Fluid 4632 is a range of polyol ester type hydraulic fluids formulated with selected additives, available in four ISO viscosity grades: 32, 46, 68 and 100. This biodegradable and environmentally responsible fluid, which does not contain water, mineral oil or phosphate esters, can be used in place of a conventional antiwear hydraulic fluid in applications where there is a risk of fire or accidental environmental contamination, where it achieves excellent hydraulic fluid performance

Applications

Sinopec Ester-based Fire-resistant Hydraulic Fluid 4632 is suitable for use in:

Hydraulic applications where there is a risk of fire or of accidental environmental contamination, where a conventional mineral-oil based antiwear hydraulic fluid would present a fire hazard or pollution hazard.
Hydraulic applications where a fire-resistant antiwear hydraulic fluid of type ISO 6743/4 HFDU or ISO/FDIS 12922 is required.

Features & Benefits

High flash point (270°C) and fire point (330°C) make the fluid resistant to fire, offering a safer working environment and greater equipment protection.
Excellent antiwear performance in hydraulic pumps and valves when used in accordance with the equipment manufacturers’ recommendations.
Excellent thermal and oxidation stability reduce the formation of deposits and sludge and prevent valve sticking, ensuring longer system life and extended drain intervals.
High shear stability means the fluid stays in grade and is not broken down in service.
Very high viscosity index (VI > 180) provides outstanding viscosity–temperature performance compared to conventional mineral oil (VI ~ 100) and phosphate ester (VI < 0) hydraulic fluids.
Good lubricity properties, provided by the polyol ester fluid, protect hydraulic components from wear.
Compatible with iron, steel, and most non-ferrous metals and their alloys.
Wide operating temperatures range – from –20°C to 90°C.
Suitable for use in hydraulic systems operating at a constant pressure of >40 MPa.
Non-toxic, non-irritating and contains no hazardous ingredients, so safe to use and handle.
Readily biodegradable and non-toxic to aquatic life, so suitable in applications where accidental spillage or leakage of fluid is possible.
Excellent storage stability and long product life – comparable to conventional mineral oil fluids or polyglycols.

Specifications

Sinopec Ester-based Fire-resistant Hydraulic Fluid 4632
ISO viscosity grade	32	46	68	100
cSt @ 40°C	32.0	46.0	68.0	100.0
cSt @ 100°C	>7.0	>9.0	>12.0	>14.0
Viscosity index, ASTM D 2270	>180	>180	>180	>180
Air release at 50°C, mins, ASTM D 3427	10 max	10 max	15 max	15 max
Foaming characteristics, ASTM D 892	50/0 max 50/0 50/0	50/0 max 50/0 50/0	50/0 max 50/0 50/0	100/0 max 100/0 100/0
Neutralisation number, mg KOH/g, ASTM D 974	2.0	2.0	2.0	2.0
Rust prevention, ASTM D 665 distilled water	pass	pass	pass	pass
Copper corrosion, 3 hours @ 100°C, ASTM D 130	1b	1b	1b	1b
Water separability, ASTM D 2711	30 max	30 max	30 max	30 max
Pour point, °C, ASTM D 97	–20 max	–20 max	–20 max	–20 max
Flash point (COC), °C, ASTM D 92	>270	>270	>270	>270
Fire point, °C, ASTM D 92	>330	>330	>330	>330
Manifold ignition test, @ 704°C, CETOP RP 65H	pass	pass	pass	pass
Density @ 20°C, kg/l, ASTM D 4052	0.95 max	0.95 max	0.95 max	0.95 max

Industry and OEM specifications

Sinopec Ester-based Fire-resistant Hydraulic Fluid 4632 meets the performance requirements of the following industry specifications:
ISO	6743/4 HFDU (synthetic fluids containing no water, other compositions)
ISO/FDIS	12992

Additional shipping fess will apply to residential, limited access, deliveries outside the regular delivery network or locations requiring a lift gate to complete delivery.

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