[INCH-POUND]
A-A-52524/12
22 September 1995
SUPERSEDING
MS51916D
27 October 1986
COMMERCIAL ITEM DESCRIPTION SPECIFICATION SHEET
SEAL, PLAIN ENCASED: ONE FELT AND
ONE LEATHER OR SYNTHETIC ELASTOMER
SEALING MEMBERS, SPRING LOADED, SHOULDERED CASE
The General Services Administration has authorized the use of this commercial item
description Specification Sheet (CIDSS) for all federal agencies.
The complete requirements for procuring the seals shall consist of this document and the issue in
effect of A-A-52524.
1. SCOPE. This CIDSS covers seals to be used as rotary shaft seals to retain oil and other fluids.
2. SALIENT CHARACTERISTICS.
2.1 Materials. The dual sealing members shall consist of one member made of mechanical-roll
extra firm pad felt and the other member conforming to one of the following classes:
2.1.1 Class 1 sealing member material. Class 1 sealing members shall be made of polymer-
impregnated leather or chrome-vegetable-retanned leather which has been mildew resistant treated
and suitable for normal operating temperatures (see A-A-52524).
2.1.2 Class 2 sealing member material. Class 2 sealing members shall be made of oil resistant
synthetic elastomer suitable for normal operating temperature service (see A-A-52524).
2.1.3 Class 3 sealing member material. Class 3 sealing members shall be made of oil resistant
elastomer suitable for extreme operating temperature service (see A-A-52524).
Beneficial comments, recommendations, additions, deletions clarifications, etc. and any other data
which may improve this document should be sent by letter to: U.S. Army Tank-automotive and
Armaments Command, ATTN: AMSTA-TR-E, Warren, MI 48397-5000.
FSC 5330
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
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