1、AMSC N/A FSC 5330 MIL-DTL-81716A 29 January 2009 SUPERSEDING MIL-P-81716 14 February 1969 DETAIL SPECIFICATION PACKING, PREFORMED, STRAIGHT THREADED TUBE FITTING BOSS, TYPE II HYDRAULIC (-65F TO +275F) This specification is approved for use by all Departments and Agencies of the Department of Defens
2、e. 1. SCOPE 1.1 This specification covers one type of elastomeric straight threaded tube fitting boss packings for use in 3000 psi (20.68 MPa) hydraulic systems using MIL-PRF-5606 fluid throughout a temperature range of -65F to +275F (-54C to +135C). 2. APPLICABLE DOCUMENTS 2.1 General. The document
3、s listed in this section are specified in sections 3, 4, or 5 of this standard. This section does not include documents cited in other sections of this standard or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, documen
4、t users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this standard, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications and standards form a part of this do
5、cument to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL STANDARDS FED-STD-601 Rubber; Sampling and Testing DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-5606 Hydraulic Fluid, Petroleum Base; Aircraft, Mi
6、ssile, and Ordnance (Inactive for new design) MIL-PRF-6083 Hydraulic Fluid, Petroleum Base, for Preservation and Operation INCH-POUNDComments, suggestions, or questions on this document should be addressed to Defense Supply Center Philadelphia (DSCP), ATTN: DSCP-NASA, 700 Robbins Avenue, Philadelphi
7、a, PA 19111-5096 or e-mail to dscpg -T6 Sheet, -T651 Plate) Solution and Precipitation Heat Treated SAE AMS6345 Steel, Sheet, Strip, and Plate 0.95 Cr 0.20 Mo (0.28 0.33C) (SAE 4130) Normalized or Otherwise Heat Treated Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
8、ense from IHS-,-,-MIL-DTL-81716A 3SAE ARP-5316 Storage of Elastomer Seals and Seal Assemblies which Include an Elastomer Element Prior to Hardware Assembly SAE AS5169 Fitting, Port Plug and Bleeder SAE AS5193 Fitting, Cross, Internal Straight Thread Port SAE AS5202 Port or Fitting End, Internal Stra
9、ight Thread, Design Standard SAE AS33931 Packing, Preformed, Straight Thread Tube Fitting Boss, Hydraulic, -65F to +275F (Copies of these documents are available from www.sae.org or the Society of Automotive Engineers, Inc., 400 Commonwealth Drive, Warrendale, PA 15096-0001.) 2.4 Order of precedence
10、 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
11、been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), samples shall be subjected to first article inspection in accordance with 4.2. 3.2 Materials. The SAE AS33931 packings shall be fabricated from an elastomeric material suitable for use in hydraulic fluid conforming to MIL-PR
12、F-5606. The material shall contain no substances which, when in contact with the fluid will adversely affect the properties of the fluid or packing. 3.3 Design and construction. The design and construction of the packing shall be in accordance with SAE AS33931. The packings shall be made from contin
13、uous-circle preforms only. 3.4 Performance. The packing and batch material shall meet the performance requirements specified in Table I performance tests when subjected to the applicable tests. 3.5 Shelf life. Unless otherwise specified, the shelf life limitations for the finished product shall conf
14、orm to SAE ARP-5316 (see 6.4). 3.6 Finish. 3.6.1 Trimming. Mold flash shall be removed from the packings in such a manner that they conform to the requirements specified herein and in SAE AS33931. The method used to trim the mold flash shall not remove the surface of the packing to a greater extent
15、than would result from a light, nonabrasive buffing. 3.6.2 Surface. All surfaces of packings shall be free from defects, blemishes, or irregularities other than minor pits, raised spots, or tool marks resulting exclusively from mold imperfections (not from dirt in the mold) and which are not greater
16、 than .003 inch in height or depth from the packing surface. Such blemishes shall not be grouped closely and shall cover not more than 10 percent of the surface. 3.7 Workmanship. The packing shall be free of unbonded or weak sections caused by internal mold seams, cold shuts, foreign inclusions or o
17、ther detrimental characteristics. The packing shall be uniform in quality and condition; clean, smooth, and free from foreign materials or defects detrimental to appearance or performance. Major defects as defined in MIL-STD-413 shall be cause for rejection. Provided by IHSNot for ResaleNo reproduct
18、ion or networking permitted without license from IHS-,-,-MIL-DTL-81716A 44. VERIFICATION 4.1 Classification of inspection. The inspection of packings shall be classified as follows (a) First article inspection (see 4.2) (b) Conformance inspection (see 4.3) 4.2 First article inspection. First article
19、 inspection shall consist of all of the inspections of this specification conducted in the order listed under 4.5 and in Table I. 4.2.1 Sampling for first article inspection. First article test samples shall be as specified in Table I and shall include the following: (a) 24 SAE AS33931, MS3393-3 pac
20、kings (b) 4 SAE AS33931, MS3393-4 packings (c) 4 SAE AS33931, MS3393-8 packings (d) 4 SAE AS33931, MS3393-12 packings (e) 58 SAE AS33931, MS3393-16 packings (f) 3 ASTM hardness discs (.250 in. (6.35 mm) thick, with a 1.0 in (25.4 mm). diameter) 4.2.1.1 Hardness discs. Hardness discs shall be formula
21、ted, processed, and cured the same as the accompanying packing. The packings shall represent the manufacturers production product, particularly with respect to stock preparation, mold design, mold finish, and molding technique. 4.3 Conformance inspection. Conformance inspection shall consist of samp
22、ling inspections only, conducted in the order listed in Table II. 4.3.1 Sampling inspection. A random sample shall be selected from each inspection lot or batch in accordance with Table II and shall be subjected to the inspections therein. Provided by IHSNot for ResaleNo reproduction or networking p
23、ermitted without license from IHS-,-,-MIL-DTL-81716A 5TABLE I. First Article Inspection Tests and Samples 1/ Physical Property Tests Paragraph Number Specimen Unaged Hardness Tensile strength Elongation Specific gravity Permanent set Temperature retraction Corrosion the number of samples to be inspe
24、cted as specified in 4.2; and (when applicable) the specific tests to be performed on each sample. The contracting officer should also include specific instructions in acquisition documents regarding arrangements for examinations, approval of first article test results, and disposition of first arti
25、cles. Invitations for bid should provide that the Government reserves the right to waive the requirement for samples for first article inspection to those bidders offering a product which has been previously acquired or tested by the Government, and that bidders offering such products, who wish to r
26、ely on such production or test, must furnish evidence with the bid that prior Government approval is presently appropriate for the pending contract. Bidders should not submit alternate bids unless specifically requested to do so in the solicitation. 6.4 Shelf-life. This specification covers items wh
27、ere the assignment of a Federal shelf-life code is a consideration. Specific shelf-life requirements should be specified in the contract or purchase order, and should include, as a minimum, shelf-life code, shelf-life package markings in accordance with MIL-STD-129 or FED-STD-123, preparation of a m
28、aterial quality storage standard for type II (extendible) shelf-life items, and a minimum of 85 percent shelf-life remaining at time of receipt by the Government. These and other requirements, if necessary, are in DoD 4140.27-M, Shelf-life Management Manual. The shelf-life codes are in the Federal L
29、ogistics Information System Total Item Record. Additive information for Shelf-life management may be obtained from DoD 4140.27-M, or the designated shelf-life Points of Contact (POC). The POC should be contacted in the following order: (1) the Inventory Control Points that manage the item and (2) th
30、e DoD Services and Agency administrators for the DoD Shelf-Life Program. Appropriate POCs for the DoD Shelf-Life program can be contacted through the DoD Shelf-Life Management website: https:/www.shelflife.hq.dla.mil/. 6.5 Subject term (key word) listing. Aircraft Cadmium Elastomeric Hydraulic syste
31、ms Rubber seal Type II temperature 6.6 Changes from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes. Custodians: Preparing activity: Army - MR DLA IS Navy - AS Air Force - 11 (Project 5330-2009-0
32、05) Review activities: Army MI NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at http:/assist.daps.dla.mil . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
