1、AMSC N/A FSC 5330 MIL-DTL-5516D 15 MAY 2008 SUPERSEDING MIL-P-5516C 5 January 1967 DETAIL SPECIFICATION Packing, Preformed, Petroleum Hydraulic Fluid Resistant, 160F (71C) This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This sp
2、ecification covers preformed packings for use where resistance to hydraulic fluid conforming to specification MIL-PRF-5606 is required at temperatures from -65 to 160F (-54 to 71C). 1.2 Classification. Packings are made from the following class of synthetic rubber as specified (see 6.2). Class A - L
3、ow Flexibility Note: Class B (High Flexibility) has been canceled and replaced by MIL-P-25732. 2. APPLICABLE DOCUMENTS 2.1 General. The documents 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 stan
4、dard or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document 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 lis
5、ted. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. Comments,
6、suggestions, or questions on this document should be addressed to Defense Supply Center Philadelphia (DSCP), ATTN: DSCP-NASA, 700 Robbins Avenue, Philadelphia, PA 19111-5096 or email to dscpg Sampling and Testing DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-G-5514 Gland Design; Packings,Hydraulic, Gener
7、al Requirements For (Inactive for new design) MIL-PRF-5606 Hydraulic Fluid, Petroleum Base; Aircraft, Missile, and Ordnance (Inactive for new design) MIL-PRF-6083 Hydraulic Fluid, Petroleum Base, for Preservation and Operation MIL-P-25732 Packing, Preformed, Petroleum Hydraulic Fluid Resistant, Limi
8、ted Service at 275 Deg. F (135 Deg.C) (Inactive for new design) DEPARTMENT OF DEFENSE STANDARDS AN6225 Packing “V” Ring Hydraulic (Inactive for new design) DEPARTMENT OF DEFENSE HANDBOOKS MIL-HDBK-831 Preparation of Test Reports (Copies of these documents are available online at http:/assist.daps.dl
9、a.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of thes
10、e documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM B36/B36M Brass Plate, Sheet, Strip, and Rolled Bar ASTM B139/B139M Phosphor Bronze, Rod, Bar, and Shapes ASTM D91 Precipitation Number of Lubricating Oils ASTM D412 Vulcanized Rubber a
11、nd Thermoplastic Elastomers Tension ASTM D573 Rubber Deterioration in an Air Oven ASTM D792 Density and Specific Gravity (Relative Density) of Plastics by Displacement ASTM D2240 Rubber Property Durometer Hardness (Copies of these documents are available from www.astm.org or the American Society for
12、 Testing and Materials, 10 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) SAE-AMS-QQ-A-250/4 Aluminum Alloy 2024, Plate and Sheet SAE-AMS-S-6758 Steel, Chrome-Molybdenum (4130) Bars and Reforging Stock (Aircraft Quality) SAE-AMS 6345 Steel Sheet, Strip, a
13、nd Plate 0.95 Cr 0.20 Mo (0.28 0.33C) (SAE 4130) Normalized or Otherwise Heat Treated SAE-ARP-5316 Storage of Elastomer Seals and Seal Assemblies which Include an Elastomer Element Prior to Hardware Assembly (Copies of these documents are available from www.sae.org or the Society of Automotive Engin
14、eers, Inc., 400 Commonwealth Drive, Warrendale, PA 15096-0001.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-5516D 32.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of t
15、his document and the reference 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 Specification sheets. The individual item requirements shall be as
16、 specified herein and in accordance with AN6225. In the event of any conflict between the requirements of this specification and AN6225, the latter shall govern. 3.2 First article. When specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.3. 3.3 Material.
17、 The packings shall be manufactured from a synthetic rubber which is compatible with hydraulic fluid conforming to specification MIL-PRF-5606. The synthetic rubber shall contain no substances which will adversely affect the properties of the fluid or the packings. 3.4 Design and construction. 3.4.1
18、Dimensions. Dimensions and tolerances shall be as specified on AN6225 or in the contract (see 6.2). 3.4.2 Splicing. Splicing of cured rubber shall not be used in the manufacture of the packings. Splicing of uncured stock is allowable. 3.5 Physical properties. Physical properties of the synthetic rub
19、ber shall conform to Table I. 3.5.1 The maximum permissible variations in original physical properties during actual production from those values established during qualification tests shall be within the limits specified in Table II, but must stay within the limits specified in Table I. 3.6 Finish.
20、 Mold flash shall be removed from the packings in such a manner that they conform to the requirements specified herein and on applicable standards. All surfaces of the packings shall be reasonably free from defects, blemishes, or irregularities. Reasonable shall be defined as allowing minor pits, ra
21、ised spots, or tool marks which shall not be greater than 0.003 inch (0.076mm) in height or depth from the packing surface. 3.7 Performance. 3.7.1 Leakage and breakout. Packings shall not exceed specified values when tested as described in section 4. There shall be no evidence of wear, extrusion, di
22、sintegration, or excessive permanent set. 3.7.2 Cycling. Packings shall withstand the operations specified in section 4. Leakage shall not exceed values specified in section 4. After test, the packings shall be serviceable with no evidence of cracking, flaking, excessive wear, or other malfunctionin
23、g. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-5516D 4Table I. - Original physical properties Property Class A Specific gravity As determined 1 Hardness at 24 3 C.(75 5F) shore A durometer, minimum 88 Tensile strength, psi As determined E
24、longation, ultimate, percent As determined Tensile stress (modulus), psi at 100 percent elongation Not required Permanent set, percent As determined at 50 percent elongation Permissible change in original physical properties after oil and air aging Tensile strength, change percent As determined Elon
25、gation change, percent As determined Hardness change, points, Shore A durometer As determined (See 4.5.2) Permanent set (list actual value) As determined Volumetric change upon aging in hydraulic oil, percent20 to +5 percent2Corrosion adhesion None21 Tests are to be made on AN6225 V-rings. All other
26、 tests are to be performed on platen sheets or hardness samples, as applicable. (Hardness shall not be determined from actual packing rings). 2 Tests are to be made on AN6225 V-rings. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-5516D 5TAB
27、LE II. Maximum production permissible variations in physical properties from contractors first article values. Property Class A Specific gravity, points 0.021Hardness, shore A durometer at 24 3C. (75 5F), points 3 2Tensile strength, percent 15 Elongation, percent 20 Modulus, pounds, percent Not requ
28、ired Permanent set, percent 20 Corrosion and adhesion Slight corrosion on steel Volume change Swell determined from first article test value 2 (see example 3) but must stay within limits specified in Table I. 1If basic specific gravity is 1.30, then limits can be 1.28 to 1.32. 2Shore hardness on pro
29、duction samples shall be not less than 85 for class A material with this tolerance applied. 3Example: If first article swell of V-ring is +1 percent, then limits can be 0 to 3 percent; if +5 percent, then limits can be 3 to 7 percent; or if +8 percent, then limits cxan be 6 to 10 percent. 3.8 Identi
30、fication of product. The following general marking shall be used, unless otherwise specified by the procuring activity. 3.8.1 V-ring packings shall have the manufacturers trademark and the applicable size dash number molded into the surface of the inner Vee close to the apex of the angle. If any oth
31、er marking is used, it shall be specially approved by the procuring activity. If raised figures are used, the height shall not exceed 0.010 inch (.254mm). Table III. - Test samples required for First Article tests Physical Property Test AN6225 V-ring Tests -20 -25 Unaged samples (table I): Specific
32、gravity Tensile strength and elongation Tensile stress (modulus) Permanent set Corrosion and adhesion 5 Air-aged (table I): Tensile strength and elongation Permanent set Oil-aged (table I): Tensile strength and elongation Permanent set Volumetric change 6 6 Subtotal (physical) 11 6 Provided by IHSNo
33、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-5516D 6Table III. - Test samples required for First Article tests (contd) Performance and Endurance Tests AN6225 V-ring Tests -20 -25 Endurance (unaged) 2 4 Performance and endurance (aged) 4 4 Subtotal (Perform
34、ance) 6 8 Total (all tests) 17 14 3.9 Age. Unless otherwise specified the age limitations for the finished product shall conform to SAE-ARP 5316. 3.10 Workmanship. Workmanship and finish shall be in accordance with the highest grade practice in manufacturing this kind of product. Manufacturing pract
35、ices shall be such that the physical properties of the finished product shall be uniform through the cross section of the packing. 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.2). b. Conf
36、ormance inspection (see 4.4). 4.2 Inspection conditions. Unless otherwise specified (see 6.2) all inspections shall be performed in accordance with the applicable test conditions specified in FED-STD-601. 4.3 First article inspection. First article inspection shall be performed at a laboratory accep
37、table to the procuring activity (see 6.3), on sample items produced with equipment and procedures normally used in production. 4.3.1 Sampling instructions. Samples for first article tests shall consist of the following: Class A material 17 AN6225-20 14 AN6225-25 3 Platen press sheets, .075 inch (1.9
38、05mm) x at least 4.75 inch (120.65mm) x 4.75 inch (120.65mm) 3 ASTM hardness test disks, .25 inch (6.35mm) thick by 1 inch (25.4mm) diameter 4.3.1.1 Platen press sheets and discs shall have the same compounding and equivalent cure as the accompanying packings, and the packings shall represent the ma
39、nufacturers production product, particularly with respect to stock preparation, mold design and finish, and molding technique. Proper identification shall be applied to each packing using expected production marking compound and technique and color Provided by IHSNot for ResaleNo reproduction or net
40、working permitted without license from IHS-,-,-MIL-DTL-5516D 74.3.2 Test report. Contractor shall furnish test reports in accordance with MIL-HDBK-831, the requirements below, any other requirement specified by the procuring activity. a. The report shall contain a tabulation of the physical property
41、 values obtained during first article tests. b. The report shall contain a complete set of photographs showing the packing as mounted for each test and showing details of any failures encountered. c. Diagrams of test setups shall be provided when not self-explanatory by the photographs. 4.3.3 Tests.
42、 First article inspection shall consist of all the following tests: Class A (a) Examination of product (4.4.1) (b) Specific gravity (new only) (4.5.1.4) (c) Shore durometer hardness (new, air and oil aged) (4.5.1.1) (d) Tensile strength (new, air and oil aged) (4.5.1.2) (e) Ultimate elongation (new,
43、 air and oil aged) (4.5.1.2) (f) Permanent set (new, air and oil aged) (4.5.1.2 and 4.5.1.3) (g) Corrosion and adhesion (new only) (4.5.3) (h) Volume change (oil aged only) (4.5.2.2) (i) High and low temperature performance (4.5.4.1 and 4.5.4.2) (j) Endurance cycling tests (4.5.5.1 and 4.5.5.2) 4.4
44、Conformance inspection. (a) Examination of product (4.4.1) (b) Batch tests (4.4.2) (c) Finished product tests (4.4.3) (d) Process monitoring tests (4.4.4) 4.4.1 Examination of product. Each packing and gasket shall be carefully examined to determine conformance to the applicable drawings, workmanshi
45、p, finish, marking and applicable standards. 4.4.1.1 Dimensions. Packings shall be checked for cross-sectional dimensions and inside and outside diameters. All dimensions shall conform to the applicable standards as specified in 3.4.1, “Shape and dimensions.” The cross section and stack height of V-
46、ring packings shall be checked in “go” and “no go” templates similar to the type indicated in figure 1. Diameters and concentricity of V-rings shall be checked as shown in figure 2, sheets 1 and 2. The general type of gage shown in figures 1 and 2 may be used in applicable form on other types of pac
47、king. 4.4.2 Batch tests. The batch shall consist of the quantity of material compounded at any one time and ready for molding and curing into the finished product. Acceptance of the batch shall in no case be construed as a guaranty of the acceptance of the finished product. 4.4.2.1 Test specimens. T
48、est specimens shall be molded from each batch and finished with the same state of cure as the finished product. Test specimens for the purpose of batch testing shall consist of one compression molded hardness specimen (.25 inch (6.35mm) thick and 1 inch (25.4mm) diameter minimum) and three dumbell s
49、pecimens cut with a C die, conforming to ASTM D412, obtained from one .075 inch (1.905mm) thick platen sheet. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-5516D 84.4.2.2 Tests. The tests shall consist of those tests specified under “Test Methods” (4.5) for the following properties: (a) Hardness (4.5
