MIL-L-24131 Lubricant, Colloidal Graphite In IsopropanolThis specification covers a noncorrosive, dry, adherent lubricant consisting of a colloidal dispersion of graphite in isopropanol, intended for use with metal parts having limited clearance in applications where control of impurities is required.

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MIL-L-24131C(SH)

Film properties: Adherence

Spalling

Appearance

The coated surface shall be dry and shall not become exposed when subjected to light abrasion.

Film continuity shall not be broken, metal surface shall not be exposed.

Dry, nonoily.

3.4  Package stability.  The lubricant shall be capable of being manually stirred or blended to a smooth lump-free dispersion with no hard cake sediment remaining for a period up to six months after delivery (see 4.4.2).

3.5  Mercury, lead, and boron prohibitions.

(a)        Mercury.  Instruments and equipment containing mercury or compounds of mercury shall not be used in the manufacture and packaging of the lubricant, nor in testing and inspection unless samples are discarded after test.

(b)        Lead.  Ingredients, processing equipment, and containers shall be sufficiently free of lead or compounds of lead that the dried solids of the lubricant shall not contain more than 150 ppm of lead (see 4.4.1).

(c)        Boron.  Compounds containing boron shall not be used in cleaning and processing equipment or containers.

4.  QUALITY ASSURANCE PROVISIONS

4.1  Responsibility for inspection.  Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements, examinations and tests as specified herein.  Except as otherwise specified in the contract or purchase order, or disapproved by the Government, the contractor may use his own or other facilities suitable for the performance of the inspection requirements herein.  The authorized representative reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements.

4.1.1  Inspection system.  The contractor shall provide and maintain an inspection system.  In addition, the contractor shall maintain a traceability system to ensure the proper identity of material.

4.1.2  Reports.  Three copies of certified reports, with the information listed below and in the format shown in Figure 1, shall be furnished by the supplier.  These reports shall include:

(a)    Lot number of the supply, purchaser's order number.

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