1、INCH-POUND A-A-52524A April 10,1997 SUPERSEDING September 22, 1995 A-A-52524 COMMERCIAL ITEM DESCRIPTION SEAL, PLAIN, AND SEAL, PLAIN, ENCASED: FLUID, RADIAL, SINGLE AND MULTIPLE LIP SEmING MEMBER The General Services Administration has authorized the use of this Commercial Item Description (CID) fo
2、r all federal agencies. l. SCOPE. This commercial item description (CID) covers radial single and multiple lip fluid seals. The seals are intended to be press mounted as rotary shaft seals to retain oil or other fluids. The seals covered by this CID are referred to commercially as “oil seals“. 2. CL
3、ASSIFICATION. Seals shall be of the following classes, as specified (see 7.2): Class 1 : Polymer impregnated or coated chrome vegetable retanned leather sealing member, Class 2: Oil resistant synthetic elastomer sealing member, normal operating temperature Class 3: Oil resistant synthetic elastomer
4、sealing member, extreme operating temperature Class 4: Mechanical- roll felt, extra h pad. normal operating temperature service -65 to 170 degrees Fahrenheit (OF). service (-65 to 200F). service (-65 to 300F). IBeneficial comments, recommendations, additions, deletions clarifications, etc. and any o
5、ther data I which may improve this document should be sent by letter to: U.S. Army Tank-automotive and Armaments Command, ATTN: AMSTA-TR-EBLUE, Warren, MI 48397-5000. AMSC N/A FSC 5330 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo r
6、eproduction or networking permitted without license from IHS-,-,-A-A-52524A m 9999974 0174134 1T7 A-A-52524A 3. SALIENT CHARACTERISTICS 3.1 Materials. Unless otherwise specified herein, in the applicable drawing, or in the CID Specification Sheet (CDSS), materials shall be in accordance with the man
7、ufacturers specificationddrawings. The use of recovered material made in compliance with regulatory requirements is acceptable providing that all requirements of this CID are met .(see 4.1). 3.2 Desim and construction. The sealing member shall be leather , synthetic elastomer or mechanical- roll fel
8、t , molded or mechanically clamped to a rigid or semirigid case, single or multiple lip. Seals shall be constructed to the class and dimensions specified in the applicable drawings, or in A-A-52524/1 through A-A-52524/18 (see 7.2). 3.3 Performance. 3.3.1 Leakwe. The maximum leakage of the lubricant
9、from the seals shall be not more than 0.5 grams per hour for any 24 hour period of testing. There shall be no leakage during any shut- down period. 3.3.2 Elevated temDerature. Seals, when operated at elevated temperatures of 170 23F for class 1,200 23F class 2, and 300 23F for class 3, shall evidenc
10、e no leakage greater than that as specified in 3.3. l. 3.3.3 Low temperature. Seals shall evidence no cracks on the sealing lip after operating at a temperature of minus (-) 65 t2F. 3.3.4 Corrosion. Corrosion resistant seal cases or springs shall evidence no corrosion or damage affecting use and sha
11、ll meet the requirements specified in 3.3.1 after exposure to salt spray (fog) in accordance with ASTM B1 17 minimum for 96 continuous hours. 3.4 Finish. When specified (see 7.2), the metallic case of the seal shall be zinc coated as per ASTM B633, Fe/Zn, type II. Corrosion resistant steel cases sha
12、ll be passivated with a nitric acid solution. When specified (see 7.2), leather sealing members shall be mold-proofed. Springs shall not be coated. When corrosion resistance is required, a spring of corrosion resistant steel shall be specified (see 7.2). Corrosion tests (see 3.3.4) shall be performe
13、d only when plating of cases, or a spring of corrosion resistant steel is specified. The outer metal press fit casing surface shall have a finish of 125 microinches, root-mean-square maximum. 3.5 Identification and marking. Identification and marking of this seal shall be permanent and legible and s
14、hall include as a minimum, the manufacturers identification code (CAGE) and the part identification number (PIN) or the applicable drawing number (see 7.2). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52524A 4. REGULATORY REQUIREMENTS 4.1 R
15、ecovered material. The offerorkontractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). 5. QUALITY ASSURANCE PROVISIONS 5.1 Responsibility for inspection. The contractor is responsible for t
16、he performance of all inspections, examinations, and tests. 5.2 Product conformance. The products provided shall meet the salient characteristics of this commercial item description, conform to the producers own drawings, specifications, standards, and quality assurance practices, and be the same pr
17、oduct offered for sale in the commercial market. The Government reserves the right to require proof of such conformance. 6. PACKAGING. Preservation, packing, and marking for the desired level shall be as specified in the contract (see 7.2). 7. NOTES (This section contains information of a general or
18、 explanatory nature that may be helpfbl, but is not mandatory.) 7.1 Addresses for obtaining copies of referenced documents. 7. l. 1 Non-Government publications. ASTM B 1 17 “Standard Test Method of Salt Spray (Fog) Testing“ and ASTM B633 “Standard Specification for Electrodeposited Coatings of Zinc
19、on Iron and Steel“, are available fiom the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. 7.2 Ordering data. Acquisition documents must speclfy the following: a. Title, number, and date of this CID. b. Class of seal required. c. Applicable drawin
20、g number, title, and date or CIDSS PIN number. d. Issue of the DoDISS to be cited in the solicitation, and ifrequired, the specific issue of e. Type of finish for metal encased seals, and if springs of corrosion resisting steel are f. Whether mildew resistance treatment is required. individual docum
21、ents referenced. required. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52524A g. Special marking, ifrequired. h. Selection of applicable level and packaging requirements. 7.3 Part or identification number PIN). The PINS to be used for seals
22、 acquired to the applicable CIDSS are created as follows: AA 52524 =-=-X - II Class 1 - Leather 2 - Elastomer for normal operatiig temperatures 3 - Elastomer for extreme operating temperatures 4 - Mechaslical- roll felt. Size (see applicable CIDSS) Specification sheet Number 1 CID number. CID design
23、ator. 7.4 Cross referenced data. Seals conforming to this document are interchangeablehbstitutable with seals conforming to MIL-S45005C(AT). MILITARY INTERJ3STS: custodian: Army - AT Review Activities: hY-AR,M DLA - IS CIVIL AGENCY COORDINATING ACTIVITY: GSA - FSS Preparing Activity: Army - AT (Project 5330-1047) 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
