1、MILITARY SPEC1 FI CATI ON MI L - G - 16 9 5 9 B 12 December 1967 SUPERSEDING MIL - C - 1 6 9 5 9A 2 December 1952 (See 6.3) GASKETS; METALLIC, BOILER, ECONOMIZER AND SUPERHEATER HANDHOLE This specification is mandatory for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.
2、1 Scope. 1.2 Classification. Gaskets shall be of the following sizes, as specified (see 6.2): This specification covers metallic gaskets for use on 2-inch round handholes of boiler economizers and superheaters. Size - 3/4-inch bearing surface width. Size - 1-1/4-inches bearing surface width. 2 APPLI
3、CABLE DOCUMENTS 2.1 The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of the specification to the extent specified herein. SPECIFICATIONS FEDERAL WW-T-731 - Tubes, Steel and Open Ilearth Iron, Seamless and Welded, Boiler Use. PPP-B-56
4、6 - Boxes, Folding, Paperboard. PPP-B-636 - GOX, Fiberboard. PPP-B-665 - Boxes; Paperboard, bletal Stayed (Including Stay-Material). PPP-B-67G - Boxes, Setup. MIL-P-116 - Preservation, lethods of. MIL-T-16286 - Tubes, Steel, Seamless, Marine Boiler Application. MIL-T-17188 - Tubes, Carbon Steel, Res
5、istance helded, Marine Boiler. MILITARY STANUARDS FEDERAL FED-STD-151 - Metals, lest Llethods. blI LITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes. PIIL-ST3-129 - blarking for Shipment and Storage. MIL-STD-130 - Identification Marking of U. S. Military Properity. DRA
6、WING MILITARY 5000-S5101-F-841218 - Gaskets, Boiler Handhole, Steam Service. (Copies of specifications, standards, drawings, and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting offic
7、er.) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. AMERICAN SOCIETY FOR TESTING ANU MATERIALS (AsTbIl A-178 - Electr
8、ic Resistance - Ifelded Carbon Steel Boiler Tubes. A-192 - Sealmess Carbon Steel Boiler Tubes for High-pressure Service. I IkW DOCUMENT CONTAINS PAGES FSC 5330 F - / L- y- -/ -Psd v (A ,- * 3 L- m . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-(
9、Application for copies should be addressed to the American Society for Testing and UNI FORII CLASS I FI CATI ON COMM1 TTEE Materials, 1916 Race Street, Philadelphia, Pa. 19103.) UNIFORM FREIGHT CLASSIFICATION RULES. Composition Ingot iron. (Application for copies should be addressed to the Uniform C
10、lassification Committee, (Technical society and technical association specifications and standards are generally 202 Union Station, 516 West Jackson Boulevard, Chicago, Illinois 60606.) available for reference from libraries. and using Federal agencies.) They are also distributed among technical gro
11、ups Carbon Manganese Sulfur Phosphorus (max. ) (max .) Percent Percent Perccnt Percent 0.05 (Max.) 0.10 (Siax,) O .O35 0.035 3. REQUIREMENTS 3.1 Material. Gaskets shall be manufactured from ingot iron with a maximum chemical content of designated items as shown in table I, total content.of carbon, m
12、anganesc, phosphorus, sulfur, and silicon not to exceed 0.14 percent; from resistance-welded tubing in accordance with class A of MIL-T-17188 or grade A of ACTMA-178; or from seamless steel tubing in accordance with class A of MIL-T-16286, composition A of KK-T-731 or ASTN A-192. TAULE I - Chemical
13、composition. 2 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-Lb757B 53 77777Ob OLO1Ob b = I MIL-G- 16959B 3.7 Workmanship. The workmanship shall be first class in every respect. 4. QUALITY ASSURAiiCE PROVISIONS 4.1 Responsibilit for inspect
14、ion. Unless otherwise specified in the contract or purchase order, the supilier is responsible for the performance of all inspection require- ments as specified herein. Except as otherwise specified, the supplier may utilize his own facilities or any commercial laboratory acceptable to the Governmen
15、t. reserves $he right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. The Government 4.2 Sampling for quality conformance inspection. 4.2.1 Lot. All gaskets of the same si
16、ze manufactured from the same batch of material and presenteat one time shall be considered a lot for purposes of examination and tests. 4.2.2 Sampling for examination. lot of material offered for visual and dimensional characteristics with lot acceptance based on the sampling procedures of MIL-STD-
17、105, Special Inspection Lcvel S-l. Acceptable Quality Level (AQL) shall be 1.5 percent defective. A random sample of gaskets shall be selected from each 4.2.3 Sampling for chemical analysis. 4.2.4 Sampling for hardness test. A random sample of gaskets shall be selected from each Two samples shall be
18、 selected for chemical analys is. lot in accoraance with MIL-STD-105, Special Inspection Level S-3, and shall be suhjected to the Rockwell hardness specified in 4.3.3. The AQL shall be 1 percent defective. 4.3 Quality conformance inspection. 4.3.1 Visual and dimcnsional examination. Each of the samp
19、le gaskets selected in accordance with 4.2.2 shall be visually and dimensionally examined to verify compliance with this specification. side diameter of all gaskets shall be checked wit: a “GO“ and “NOT GO“ plug gage. diameter of all gaskets shall be checked with a GO“ and “NOT GO“ snap gage, and wa
20、ll thickness shall be checked with a dial inspector fixture gage for compliance with the dimensions and tolerances shown on Drawing 5000-5-5101-F-841218. Any gasket in the sample containing one or more visual or dimensional defects shall be subject to rejection, and if the number of defective gasket
21、s in any sample exceeds the acceptance number for that sample, this shall be cause for rejection of the lot represented by the sample. Table II - Classification of defects. Examination shall be conducted in accordance with table II. In- Outside Categories Defects Critical: Major: 101 102 103 104 105
22、 106 107 108 109 - None defined. Chemical content not as specified. Hardness over limit of 65 on Kockwell II scale. Bearing surfacc not as specified within tolerance Outside diameter not 2.015 inches within tolerance Thickness not 0.055 inch within tolerance of plus Inside taper both ends not 30 deg
23、rees, not within Inside and outside finish not within description Burrs not removed from both ends of gaskets and Preservation not as specified, of plus or minus 0.031 inch. of plus or minus 0.003 inch. 0.003 inch, minus 0.001 inch. 0.031 inch minimum, 0.062 inch maximum. of roughness height rating
24、125. corners not broken. 3 .* y - ., - ._. + - . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- . . . - - - . -, I MIL-G-16757B 53 7777706 0101807 8 MIL-G-16959B Table II - Classification of defects. (Contd) Categories Defect s Minor : 203 201 Inte
25、rior packages not prepared as specified; any packaging requirement not as specified; number of maximum items per basic package not complying; insufficient room in package to prevent jamming. flat steel strapping or tape binding; inadequate application of components such as incomplete closure of cont
26、ainer flaps, improper stapling or taping; broken, crushed, or otherwise damaged shipping containers; gross weight of interior packages not as specified. Packing not in accordance with contract require- ments; shipping containers not snug-fitting; voids not filled; filler for voids not of specified m
27、atcrial; not furnished with fiberboard liner or pad as specified; gross weight of con- tents of shipping container in excess of weight spccified; any nonconforming component; component missing, damaged, or otherwise defective; in- adequate application o components such as incomplete closures of case
28、 liners, container flaps, loose or inadequate strappings, bulged or distorted containers. omitted, illegible, incorrect, incomplete, of iin- proper size location, or not in accordance with contract requirements. 202 For interior packaging, insufficient or insecure 204 Interior and exterior markings
29、as specified, I 4.3.2 Chemical analysis. Each of the sample gaskets sclected in accordance with 4.2.3 shall be analyzed by method 111 of FEU-STD-151 to determine conformance with 3.1. If any sample fails to conform to 3.1, this shall be cause for rejection of the entire lot. shall be tested by metho
30、d 243 of FED-STU-151 to determine conformance with 3.4. Any sample gasket which does not meet the requirements specified in 3.4 shall be subject to rejection, and if the number of nonconforming gaskcts in any sample exceeds the acceptance number for that sample, this shall be cause for rejection of
31、the lot represented by the sample. Rejected lots shall not be resubmitted. 4.3.3 Hardness test. Each of the sample gaskets selected in accordance with 4.2.4 4.3.4 Examination of preparation for delivery. An examination shall be made to determine that the packaging, parking, and markings comply with
32、the requirements of Section 5 of this specification. Examination shall be conducted in accordance with table II. The sample units for this examination shall be shipping containers fully packed, selected just prior to the closing operation. Shipping containers fully prepared for delivery shall be exa
33、mined for closure defects. The lot size shall be the number of shipping containers in the lot. Selection of random samples and examination shall be niade at Inspection Level S-2 of MIL-STD-105. The AQL shall be 2.5 percent defective. 5. PREPARATION FOR DELIVERY (Preparation for delivery requirements
34、 specified herein apply only to direct Govern- ment procurement. Preparation for delivery requirements between contractors and sub- contractors shall be as specified in the individual order.) 5.1 Preservation and packaging. as specified (see 6.2). Preservation and packaging shall be Level A or C, 5.
35、1.1 Level A. Gaskets shall be preserved and packaged Method I of NIL-P-116. Only gaskets of like size shall be packaged in a unit package. Quantity per unit package shall be as specified by the procuring activity. Preservation compound shall conform to type P-2 or P-6 or MIL-P-116. forming to PPP-B-
36、566, PPP-B-665, or PPP-U-676. The weight of each intermediate packages under PPP-B-566 or PPP-B-676 shall not exceed 5 pounds. The weight.of each intermediate package under PPP-B-665 shall not exceed 20 pounds. Package closures shall conform to the applicable specifications or appendix thereto. Unit
37、 packages shall be packaged in intermediate containers con- 4 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-Lb757B 53 77777Ob OLOLBOB T MI L - C - 16 9 5 9B 5.1.2 Level C. Gaskets shall be preserved and packaged by size in a manner which af
38、fords adeqmotection against corrosion, deterioration, and physical damage during shipment from supply source to the first receiving activity for immediate use. This level may conform to the suppliers commercial practices, provided the latter meets the require- ments of this level. 5.2 Packing. Packi
39、ng shall be Level A, B, or C, as specified (see 6.2). 5.2.3 Level A. Gaskets packaged as specified in 5.1.1 shall be packed in fiberboard shipping containers conforming to PPP-B-G36, class weather resistant. shipping containers shall be uniform in shape and size and contain identical quantities. Gro
40、ss weigh shall be limited to the special requirements of the container specification. Container closureand sealing shall be in accordance with the appendix to PPP-B-636. container shallform to class domes tic. Insofar as practicable, 5.2.2 Level B. Level B shall be the same as Level A, except the fi
41、berboard.shipping 5.2.3 Level C. Gaskets packaged as specified in 5.1.2 shall be packed in a manner which affords adequate protection against damage during direct shipment from the supply source to the first receiving activity for immediate use. Uniform Freight Classification Rules or other regulati
42、ons as applicable to the mode of transportation. latter meets the above requirements. the unit pacTagrs; intermediate packages, and exterior shipping containers shall be marked in accordance with MIL-STD-129. Product marking shall be as specified in 3.6. This level shall comply with the This level m
43、ay conform to the suppliers commercial practice provided the 5.3 Markin In addition to any special marking required by the contract or order, 6. NOTES 6.1 Intended use. 6.1.1 Size 3/4-inch gaskets (Federal Standard Stock Number FSN 5330-196-6987), are intended for use on 2-inch round handholes of bo
44、iler economizers and superheaters installed on combatant naval ships and on economizers and waterwall headers installed on naval ship built for the U.S. Maritime Commission and converted to Navy use. applicable to Foster Wheeler Corporation boilers or economizers. 6.1.2 Size l-1/4-inch gaskets (Fede
45、ral Standard Stock Number FSN 5330-196-6988), are intended for use on 2-inch round handholes of boiler superheaters installed in ships built for the U.S. Maritime Commission and converted to Navy use, This size is applicable to superheaters of Foster Wheeler Corporation boilers. These gaskets are 6.
46、2 Ordering data. Procurement documents should specify the following: (a) Title, number, and date of this specification. (b) Size required (see 1.2). (c) Selection of applicable levels of preservation, packaging, and packing (see (d) Special marking, if required (see 5.3). 5.1 and 5.2). 6.3 CHANGES F
47、ROM PREVIOUS ISSUE. THE EXTEKT OF CIIANGBS (DELETIONS, ADDITIONS, ETC.) PRECLUDE THE ANNOTATION OF TIE INDIVIDUAL CIIANGES FRON TIIC PREVIOUS ISSE OF TIIIS DOCU!.IENT. Custodians : Navy - SH Air Force - 82 Review activities: Navy - SH Air Force - 82, 85 User activity: Army - ME Preparing activity: Navy - SI1 (Project 5330-0284) 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
