MIL-PRF-83282D
TABLE II. Properties of the finished fluid - Continued.
Characteristic
Requirement
Solid particle contamination
Filtration time: 15 minutes, max.
Particle count: see table III
Gravimetric analysis: 0.3 mg, max.
Specific gravity at 15.6°C/15.6°C
2/
Storage stability (after 12 months of storage)
The fluid shall be clear and transparent with no
separation of ingredients or evidence of
crystallization and shall conform to all
requirements of this specification.
Swelling of synthetic rubber, NBR-L
18.0 to 30.0 percent
Viscosity at 205°C
1.0 cSt, min.
Viscosity at 100°C
3.45 cSt, min.
Viscosity at 40°C
14.0 cSt, min.
Viscosity at -40°C
2,200 cSt, max.
Water content
100 ppm, max.
1/
A ring of small bubbles around the edge of the container is considered a complete collapse.
2/
To be determined during the qualification inspection (see 4.2). During conformance inspection
(see 4.3), the specific gravity of the hydraulic fluid at 15.6°C/15.6°C shall be ±0.008 the value
determined during the qualification inspection.
TABLE III. Solid particle contamination.
Particle size
Maximum count per 100 ml
Maximum count per 100 ml
(largest dimension)
(microscopic method)
(automatic counter)
5 - 15 µm
2,500
10,000
15 - 25 µm
1,000
1,000
25 - 50 µm
250
150
50 - 100 µm
25
20
Over 100 µm
10
5
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are classified
as follows:
a. Qualification inspection (see 4.2).
b. Conformance inspection (see 4.3).
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