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|  MIL-S-52506D(ME)
UNIFORM CLASSIFICATION COMMITTEE (UCC)
Uniform Freight Classification Rules
(Application for copies should be addressed to Uniform Classification Committee,
Tariff Publishing Officer, Room 1106, 222 S. Riverside Plaza, Chicago, IL
ATTN :
60606.)
(Non-Government standards and other publications are normally available from the
These documents also may
organizations that prepare or distribute the documents.
be available in or through libraries or other informational services.)
2.3 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
Nothing in this document, however, supersedes applicable laws and
precedence.
regulations unless a specific exemption has been obtained.
REQUIREMENTS
3.
3.1 Description.
Each seal shall consist essentially of a seat, seat ring,
carbon seal washer, bellows, retainer, spring, drive band, and spring holder.
3.2 First article.
Unless otherwise specified (see 6.2), a sample shall be
subjected to first article inspection (see 6.3) in accordance with 4.3.
Materials not
3.3 Materials.
Materials shall be as specified herein.
specified shall be selected by the contractor and shall be subject to all
provisions of this specification.
3.3.1 Cadmium plating.
Cadmium plating and cadmium plated items shall not be
used.
3.3.2 Material deterioration prevention and control. The seal shall be
fabricated from compatible materials, inherently corrosion resistant or treated to
provide protection against the various forms of corrosion and deterioration that
may be encountered in any of the applicable operation and storage environments to
which the seal may be exposed.
3.3.2.1 Dissimilar metals.
Dissimilar metals shall not be used in intimate
Dissimilar
contact with each other unless protected against galvanic corrosion.
metals and methods of protection are defined and detailed in MIL-STD-889.
3.3.2.2
Identification of materials and finishes. The contractor shall
identify the specific material, material finish or treatment for use with
component and subcomponent, and shall make information available upon request to
the contracting officer or designated representative.
For the purpose of this requirement, recovered
3.3.2.3 Recovered materials.
materials are those materials which have been collected from solid waste and
reprocessed to become a source of raw materials, as distinguished from virgin raw
materials.
The components, pieces and parts incorporated in the seals may be
newly fabricated from recovered materials to the maximum extent practicable,
provided the seals produced meets all other requirements of this specification.
4
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