1、I INCH-POUND I MIL-DTL-43002E 14 September, 2000 SUPERSEDING 6 February, 1984 . MIL- S-43 002D DETAILED SPECIFICATION SHIELD, STOVEPIPE, TENT, NONMETALLIC This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification cover
2、s requirements for a flexible, silicone rubber coated shield for a tent stovepipe opening. 2. APPLICABLE DOCUMENTS “2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this speci
3、fication 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 documents cited in sections 3 and 4 of this specification, whether or not they are
4、listed. 2.2 Government documents. “2.2.1 Specifications, standards, and handbooks The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Departm
5、ent of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). Beneficial comments (recommendations, additions, deletions, clarifications) and any pertinent data which may be of use in improving this document should be addressed to: Defense
6、 Supply Center Philadelphia, Clothing and Textiles Directorate, Attn: DSCP-CNR, 700 Robbins Ave., Philadelphia, PA 19111-5096 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC NIA FSC 8340 Provided by IHSNot for ResaleN
7、o reproduction or networking permitted without license from IHS-,-,-MIL-DTL-43002E SPECIFICATIONS FEDERAL A-A-55280 - Cloth, Coated, Glass, Silicone Rubber (Unless otherwise indicated. copies of federal and military specifications, standards, and handbooks are available from the Document Automation
8、and Production Service, (DAPS) Bldg. 4D (DPM-DODSSP), 700 Robbins Avenue, Philadelphia, PA 19 1 1 1-5094.) 2.2.2 Other Government documents, drawings, and publications The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Un
9、less otherwise specified, the issues are those cited in the solicitation. DRAWING U.S. ARMY BIOLOGICAL Assembly and Details (Copies of drawings are available from the U. S. Army Biological Chemical Command, ATTN: AMSSB-REO-S(N), NATICK, MA O 1760-50 17.) “2.3 Non-Government publications. The followi
10、ng document(s) form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODIS
11、S are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM-D-4 12 - Tensile Strength ASTM-D-573 ASTM-D-1053 - Stiffness, Torsional, Low-Temperature ASTM-D-2240 - Hardness Durometer ASTM-D-2256 - Air Heat Test, Air Heating Medium - Te
12、nsile Properties of Yarns by the Single-Strand Method (Applications for copies of referenced documents should be addressed to the American Society for Testing and Materials, 1 O0 Barr Harbor Drive, West Conshohocken, PA 19426- 2959.) “2.3 Order of precedence. In the event of a conflict between the t
13、ext of this specification and the references cited herein, the text of this specification takes precedence. Nothing in this specification, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS “3.1 First article. When specified (see 6.2),
14、a sample shall be subjected to first article inspection (see 4.3 and 6.2). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-43002E 3.2 Materials and components. The materials (see 6.5) and components shall be as specified on the applicable d
15、rawings and as specified herein. “3.2.1 Coated cloth. The coated cloth for making the main piece of the shield shall be silicone rubber coated glass cloth conforming to A-A-55280. “3.2.2 Rubber. The rubber for the molded collar shall be compounded to conform to the requirements specified in Table I
16、and shall be pigmented such that the color approximates Camouflage Green 483. Table I. Physical requirements for rubber of molded collar Characteristic Requirement Tensile strength lbs/& (min) Before aging After aging Ultimate elongation % (min) Before aging After aging Hardness, scale reading: Befo
17、re aging After aging, maximum increase, % Cold resistance at -85“F, minimum angular twist,“ 600 400 175 125 60 2 5 25 - 1/ The angular twist of the specimens in degrees shall be not less than that specified for the specimen thickness in ASTM D 1053. 3.3 Construction. At the option of the contractor,
18、 the construction of the shield shall be in accordance with construction A or B as specified in 3.3.1 and 3.3.2. 3.3.1 Construction A. The shield shall consist of two parts: the main piece and the molded collar. The dimensions of the shield shall be as specified in Drawing 8-1-10 and the cross- sect
19、ional configuration shall be as specified for construction A in Drawing 8- 1-1 O. The main piece shall be made of the coated cloth specified in 3.2.1. The collar shall be made of the rubber specified in 3.2.2. The hole edge of the main piece shall be inserted into the rubber collar. The collar shall
20、 then be stitched to the main piece with one continuous row of stitching, 1/8 to 3/16 inch from the outside edge of the collar. Stitching shall be stitch type 301,4 to 5 stitches per inch. The thread shall be as specified in 3.3.1.1. The last end of the stitching shall be run over the first end for
21、a distance of 1 to 1-1/2 inches. Thread ends shall be trimmed to not more than 1/8 inch. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-43002E 3.3.1.1 Thread. The thread for stitching the collar to the main piece shall be polytetraflouroet
22、hylene (TFE) coated glass thread, natural color equal to or better than Dodge Industries Fluoroglass Thread M753-18. The thread shall meet the following requirements (see 4.4.1): Breaking strength, lbs., (min) LengtWpound, yds. (min) (ma.) TFE content, % by weight (min) 15 1800 2400 12 3.3.2 Constru
23、ction B. The shield shall consist of two parts: the main piece and the molded collar. The dimensions of the shield shall be as specified in Drawing 8-1-10 and the cross- sectional configuration shall be as specified for construction B in Drawing 8- 1-1 O. The main piece shall be made of the coated c
24、loth specified in 3.2.1. The collar shall be made of the rubber specified in 3.2.2. The collar shall be molded by the means of vulcanizing over the main piece and there shall be no visible evidence of cloth showing on the inside edge of the molded collar. 3.4 Strength of collar. There shall be no se
25、paration of the collar from the main piece or tearing away of the rubber in the collar when tested as specified in 4.5.1. “3.5 Identification label Each shield shall be legibly marked along the edge on the back or reverse side with black ink in letters not less than Yi inch in height with the follow
26、ing information: Stock Number Nomenclature Contract Number Date of Manufacture “3.6 Replacement of defective components During the manufacturing process, components having material defects or damages that are classified as defects in 4.4.3 and 4.4.4 shall be removed from production and replaced with
27、 non-defective or properly matched components. “3.7 Workmanship. The finished shields shall conform to the quality of product established by this document. 4. VERIFICATION 4.1 Responsibility for dimensional requirements Unless otherwise specified in the contract or purchase order, the contractor is
28、responsible for ensuring that all dimensions specified have been met. When dimensions cannot be examined on the end item, inspection shall be made at any point, or at all points in the manufacturing process necessary to ensure compliance with all dimensional requirements. 4 Provided by IHSNot for Re
29、saleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-43002E 4.1.2 Certificate of compliance When certificates of compliance are submitted, the Government reserves the right to check test such items to determine the validity of the certification. 4.2 Classification of insp
30、ections The inspection requirements specified herein are classified as follows: a. b. Conformance inspection (see 4.4). First article inspection (see 4.3). 4.3 First article inspection When a first article is required (see 6.2) it shall be examined for the defects listed in 4.4.3 and 4.4.4 and teste
31、d as specified in 4.4.5. The presence of any defect or failure of any test shall be cause for rejection of the first article. 4.4 Conformance inspection Sampling for inspection shall be as specified in the contract or purchase order. “4.4.1 Component and material inspection In accordance with 4.1, c
32、omponents and materials shall be inspected in accordance with all the requirements of referenced documents unless otherwise excluded, amended, modified or qualified in this specification or applicable purchase document. A certificate of compliance shall be furnished with each shipment or lot stating
33、 that the materials and components conform to the applicable requirements listed below: Material component Requirement Thread (composition, breaking strength) L/ lengtwlb., TFE content 3.3.1.1 1/ *When tested in accordance with ASTM-D-2256. Testing speed shall be 122 0.5 in/min and a 10 inch gauge l
34、ength shall be used. 4.4.2 Rubber test. In addition to the requirements of the applicable referenced documents the rubber shall be tested for the characteristics listed in Table II. The lot size shall be expressed in units of one shield. The sample unit shall be four pieces of the rubber compound fo
35、r the collar, molded and vulcanized under the same conditions as the finished shields. Each piece shall be 6 by 6 inches by 0.0752 0.010 inch thick. The sample size shall be as specified below. The lot shall be unacceptable if any sample unit fails to meet any requirement specified. A certificate of
36、 compliance shall be furnished with each shipment or lot stating that the test pieces of the rubber compound were molded and vulcanized under the same conditions as the finished shield. Lot size (shields) 800 or less 801 up to and including 22,000 22,001 and over Table II. Rubber tests Sample size 2
37、 5 5 Characteristic Requirement paragraph Test method Tensile strength: before aging after aging Table I Table I ASTM-D-4 12 L/ ASTM-D-4 12 L/ & ASTM-D-573 S/ 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-43002E Table II. Rubber tests Cha
38、racteristic Requirement paragraph Test method Ultimate elongation: before aging after aging Hardness before aging after aging Cold resistance Table I Table I Table I Table I Table I ASTM-D-4 12 L/ ASTM-D-4 12 1 & ASTM-D-573 S/ ASTM-D-2240 31 ASTM-D-2240 31 & ASTM-D-573 S/ ASTM-D-1053 41 - 11 Die No.
39、 III shall be used to cut test specimens. - 21 Except that test specimens shall be aged for 3 hours at 600F. - 31 The Shore-A-Durometer shall be used to measure the hardness. - 41 The temperature of the exposure shall be -85 OF and the heat transfer medium shall be methanol. The exposure time shall
40、be 20 minutes. 4.4.3 End item visual examination The end item shall be examined for the defects listed in Table III and applicable to the construction (A or B) furnished. The lot size shall be expressed in units of shields. The sample unit shall be one shield. The inspection level shall be II. TABLE
41、 III. End item visual defects Classification Examine Defect Major Minor Main piece Tear, cut or hole (excepting pinhole) 101 exposure of uncoated cloth structure Abrasion, resulting in thin or weak place or 102 Blister or soft lump 103 Hard lump exceeding Yi inch in combined length and width directi
42、ons, clearly noticeable Crease or wrinkle resulting in doubling that cannot be corrected by manual pressure or adhesion of surfaces against each other Area devoid of coating, measuring more than 1 inch in any lineal direction Area devoid of coating, measuring 1 inch or less in any lineal direction C
43、olor not as specified Coating tacky 106 104 105 Rubber collar Crack, check, pit or blister 107 108 Tear, void, sunburst, lump or shrinkagemark Color of molded rubber collar does not approximate camouflage green 483 Shade does not match approved guide sample 20 1 202 203 204 205 Thread Not natural co
44、lor. 6 206 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-43002E TABLE III. End item visual defects (continued) Classification Examine Defect Major Minor Design Any characteristic not in accordance with specified requirements (unless otherwi
45、se indicated herein) 109 Construction Any component missing & Workman- Edge of cloth visible through inside edge of ship molded collar Wrong stitch type Stitches per inch less than 4 or more than 5 Stitching margin less than 1/8 or more than % inch Overstitching of first end: - less than 1 inch but
46、not less than Yi inch - less than Yi inch or more than 1 Yi inches Thread ends not trimmed to within 1/8 inch Broken and skipped stitches: - more than one consecutively or more - more than one but not more than than three per shield three provided the broken stitches are at least 3 inches apart Run
47、off Tight stitching showing obvious splitting of Loose stitching, thread loops on top or bottom Delamination or separation of collar from rubber collar surfaces which can be entered by a size 18 needle main piece: - greater than 1 inch - 1 inch or less Appreciable amount of rubber from molded collar
48、 distributed on sides of reinforcing rings seriously affecting appearance Malformation, irregularity or poor trim of molded collar Spot, stain, streak or other discoloration Overall uncleanness Objectionable odor clearly visible NOTE: Aromatic odors usually associated with Specific types of rubber c
49、ompounds shall not be regarded as objectionable 110 111 112 113 207 114 208 209 115 210 116 117 118 119 120 21 1 212 213 214 215 Marking Smeared, missing, incomplete, incorrect or illegible 12 1 Not in proper location 216 Height of lettering not as specified 217 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-43002E “4.4.4 End item dimensional examination The end item shall be examined for
