MIL-PRF-23827 Grease, Aircraft And Instrument, Gear And Actuator ScrewThis specification covers the requirements for one grade of grease for use at extremely low temperatures on aircraft and instruments. This grease is effective in the temperature range from -73 degrees to 121 degrees C. The type I grease is identified by NATO code Number G-354 \(see 6.8\).

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MIL-PRF-23827C

ASTM-D2595

Evaporation Loss of Lubricating Greases Over Wide

Temperature Range, Standard Test Method for (DoD

adopted)

ASTM-D2596

Measurement of Extreme Pressure Properties of Lubricating

Grease (Four Ball Method), Standard Test Method for (DoD

adopted)

ASTM-D3336

Life of Lubricating Greases in Ball Bearings at Elevated

Temperatures, Standard Test Method for (DoD adopted)

ASTM-D4048

Detection of Copper Corrosion from Lubricating Grease,

Standard Test Method for (DoD adopted)

ASTM-D4057

Manual Sampling of Petroleum and Petroleum Products,

Standard Practice for (DoD adopted)

ASTM-D6184

Oil Separation from Lubricating Grease (Conical Sieve

Method), Standard Test Method for (DoD Adopted)

(Application for copies should be addressed to the American Society for Testing and

Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.)

2.4 Order of precedence. In the event of a conflict between the text of this document and

the references cited herein, the text of this document takes precedence. Nothing in this document,

however, supersedes applicable laws and regulations unless a specific exemption has been

obtained.

3. REQUIREMENTS

3.1 Qualification. The grease furnished under this specification shall be a product that is

authorized by the qualifying activity for listing on the applicable qualified products list before

contract award (see 4.3 and 6.3). Any change in the formulation of a qualified product shall

require requalification of that product.

3.2 Material. The grease shall consist of a gelling agent, a diester base oil, and an

extreme-pressure additive, and any other chemical addition agent required to meet the

requirements of this specification (see 6.7).

3.2.1 Toxicity. The grease furnished under this specification shall have no adverse effect on

the health of personnel when used for its intended purpose (see 6.2).

3.3 Physical properties. Physical properties of the grease shall be in accordance with

table I.