MIL-PRF-83860D
2.4 Order of precedence. Unless otherwise noted herein or in the contract, 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 filter furnished under this specification shall be products that are
authorized by the qualifying activity for listing on the applicable qualified products list before
contract award (see 4.2 and 6.3).
3.2 Recycled, recovered, or environmentally preferable materials. Recycled, recovered,
or environmentally preferable materials should be used to the maximum extent possible,
provided that the material meets or exceeds the operational and maintenance requirements, and
promotes economically advantageous life cycle costs.
3.3 Workmanship. The filter element shall be constructed in accordance with commonly
accepted industrial workmanship standards.
3.4 Materials.
3.4.1 Fungus resistance. The filter elements shall be resistant to fungus.
3.4.2 Aging. If filter materials having age limitations are used, an expiration date shall
be added to the marking requirement of 3.8.
3.4.3 Hazardous materials. The use of toxic chemicals, hazardous substances, or ozone
depleting chemicals shall be avoided, whenever feasible.
3.5 Interface.
3.5.1 Dimensions. The filter element shall conform to the dimensions for the appropriate
part number (PN) as designated by figures 1, 2, 3, or 4 (see 6.2).
3.5.2 Type. The filter element shall be of the full-flow type. The flow through the filter
element shall be from the outside of the filter to the inside.
3.6 Performance.
3.6.1 Endurance. The filter element shall be capable of withstanding 2,000 hours of
operation in ambient temperature with a 275° test fluid.
3.6.2 General. Filter element performance requirements are specified in table I.
3.6.3 Filter media. Filter media shall withstand thermal and pressure-flow cycling. In
addition, there shall be no filter media migration during operation.
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