1、MIL-N-SLLL2A 42 7777706 023YSY3 7 . MI-51112( u.) 17 January 1977 SLFEXS EDING MIL-I?- 51112 ( PKJ) i9 April i968 W- MILITARY SPECIFICATIOW NOSECUP-DEFLECTOR, C11 This specification is approved for use by Edgewood Arsenal, Department of the Army, and is available for use by all Depart- ments and Age
2、ncies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers a chenxical-biological mask nosecup- deflector molded fron a 65 percent natural rubber compound. as specified (see 6.2): 1.2 Classification. Nosecup-deflectors shall be of the following sizes, Medium Large 2. APPLICABL
3、E DOCW4EW?S 2.1 Government docurients. The following documents of the issue in effect on date of invitation for bids or request for proposal form a part of this specification to the extent specified herein: SPECIFICATIONS MILITARY ML-F-51110 - Faceblank-Lens , Ci4R3 FSC 4240 : Beneficial comments (r
4、ecorcmendations, additions, deletions) and any : : pertinent data which may be of use in improving this document should : : be addressed to : : Aberdeen Proving Ground, MD : Standardization Document Improvement Proposal (EL? Forn 1426) appear- : : inc at the end of this document or by letter, Comman
5、er, Edgewood Arsenal, Attn : SAREA-TS-S , 21010 by using the self-addressed . THIS DOCUMENT CONTAINS -1-t). -. PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-N-51112A( EA) STANDARE FEDERAL FED-STD-123 - Marking for Domestic Shipment ( Civ
6、il Agencies). MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes US ARMY ARMAMEPUT COEIEMD EDGEMOOD ARSEIWL Es-2-988 - Nosecup-deflector, Medium, C11. Es-2-9 86 - Kosecup-deflector, Large, C11, Di36-19-14 - Puncture, Tester, Natural Rubber, Q38, Assembly. n36-19-22 -
7、Flexibility, Tester, Natural Rubber, Q37, Assercbly. PUBLICATIOMS EDGEWOOD ARSENAL DIPECTIVE I?o. 618 - Ozone Resistance Test of Natural Rubber Material, (Copies of specifications , standards, drawings, and publications required by suppliers in connection with specific procurement functions should b
8、e ob- tained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications. The following documents form a part of this speci- fication to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for propo
9、sal shdl apply AMERICAN SOCIETY FOR mSTiNG AKD MATERIPLS ASTM Standards: a12 - Method of Tension Testing of Vulcanized Rubber, D572 - Accelerated Aging of Vulcanized Rubber by the Oxygen-Pressure D573 - Accelerated Aging of Vulcanized Rubber by Oven Method. D624 - Test for Tear Resistance of Vulcani
10、zed Rubber, hfethod. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1-1-51112( EA) D2240 - Da82 - Standard Materials, Equipment, and Procedures for Mixing Indentation Eardness of Rubber and Plastic by Means of Durometer. Rubber Compound and for Pr
11、eparing Vulcanized Test Sheets, (Application for copies of the above publications should be addressed to the American Society for Testing and Naterials , i916 Race Street, Philadelphia, Pennsylvania. ) SCHWARTZ , TULIPA3, AND BIRMIIIGHAT4 Occupational Diseases of the Skin (This publication may be ob
12、tained from the publishers: Lea and. Febiger, Philadelphia, Pennsylvania. ) 3.1 t;iaterials. 3.1.1 Rubber compound. The rubber compound shall be non-blooming, except for slight wax-type bloom, and shall be compounded with not less than 65 per- cent, by volume, of new natural rubber, The compound sha
13、ll be free from lead or mineral sulfates. 3.1.2 Antiozonide. The rubber compound shall contain an antiozonide. 3.1.3 Copper and manganese inhibitor. The rubber compound shall contain a copper and manganese inhibitor. 3.1.4 Color. The rubber compound shall be black. 3.1.5 Toxicity. When the nosecup i
14、s worn as a component of a nosecup assembly in a mask, it shall not cause undue sensitization or primary irritation of the wearers skin. Objective evidence shall be submitted in accordance with 4.1.2.2, Once the rubber formulation has been approved by the Government, the supplier shall not make a ma
15、jor change (6.4) in the formulation or in the curing process. 3.2 Idanufacture. 3.2.1 Nosecup-deflector. The nosecupdeflector shall be manufactured, in one piece, by the conventional process of molding under heat and pressure. Each size specified. in the contract or order shall be manufactured in ac
16、cord- ance with Drawing 35-2-968 or Drawing E5-2-986 as applicable, in molds approved by the Government. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-N-SLLL2A 42 m 9999906 0234546 2 m MIL-N-51112A( EA) 3.2.2 Test slabs, Test slabs shall be f
17、abricated from stock representative of the formulation used for the preproduction sample and from each sublot during reguiar production of nosecup-deflectors in accordance with ASTX E3182. The slabs shall have a cure equivalent to that of the re evidence that the proposed formulation is the same as
18、that used in his comercial products; and information on the nature, extent, and length of time of his comercial experience with the formulation. Other evidence may include references to technical or other scientific publications, comercial laboratory reports, opinions or statements of recognized aut
19、horities and agencies in the field of derxatology, and any other pertinent data, This information shall include a complete description of any programs 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-N-SLLL2A 42 = 9999906 0234549 8 MIL-N- 51112
20、A( EA) b. Patch testinp. If the above information is not sufficient to establish nontoxicity of the rubber formulation, the contractor shall perfom- 200 patch tests under the supervision of competent medical auth- orities in the fiela of dermatoloa. These patch tests shzll be at no aditional cost to
21、 the Government and shall be conducted in accordance with the prophetic patch test method described in “Occupational Diseases of the Skin“ by Schwartz, Tulipan, and Birminghair,. A control rubber for use in the patch tests shall be furnished by the Governnent upon written request of the contractor.
22、The patches coriiposec of the candidate rubber forrmlation shall not produce positive reactions in excess of that of the control rubber patches. A copy of the test results and the evaluation thereof by the medical authorities described above shall be furnished to the contracting officer. 4.2 Classif
23、ication of inspections. The inspection requirements speci- fied herein are classified as follows: (a) preproduction inspection (see 4.3). (b) Quality conformance inspection (see 4.4). 4.3 Preproduction inspection. 4.3.1 for all 4.3.2 b.4.4.3 4.3.3 Examination. Fifteen sample nosecup-deflectors shall
24、 be inspected requirements of the applicable drawings and this specification. Tests. Forty-two test slabs shall be tested in accordance with (seeable II). Acceptance/rejection criteria. The preproduction sample shall meet the examination and tests specified. by b.3.1 and 4.3.2 to be acceptable. supp
25、lier shall obtain written approval, including mold approval, from the contracting officer before proceeding with regular production, The 4.4 Quality confornance inspection. 4.4.1 Lotting. A lot of nosecups shall consist of those produced in sequence during one month as indicated by the dots in the m
26、edallion on the nosecup. A sublot shall consist of the items produced from one batch of material (see 6.8). A new lot shall be established following the occur- rence of any event affecting the hoEogeneity of the lot or use of an alter- native approved formulation. 4.4 .2 Sampling. 4.4.2.1 For nondes
27、tructive examination, Sampling shall be conducted in accordance with NIL-STD-O. -. 7 i -. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-N-5LLJ2A 42 W 9777706 023Ll550 4 MIL-N- 51112A( EA) 4.4.2.2 For tests. Thirty-nine test slabs shall be submi
28、tted with each sublot for testing. 4.4.3 inspection procedure. 4.4.3.1 Examination. Sample nosecup-deflectors from the regular production lot shall be examined in accordance with the classification of defects and MIL-STE-10 5, - 4.41.3.2 -Tests. Sanple slabs shall be tested in accordance with 4.4.4.
29、3. 4.4.3.3 Classification of defects. (a) Nosecup-deflector (Dwg 35-2-986 or Dwg E5-2-9C8 as applicable). Cat ejiories Defects Critical: None defined Major: A a vendor or contrac- a military arsenal or plant, Figure 2. attached for information only. Figure 2 is a miniature reproduction of assemb1.y
30、drawing - Batch. A batch is defined as that quantity of material which has been manufactured by some unit chemical process and subjected to sorre ?hysicd mixing operation intended to make the find product substantially uniform. 6.9 International interest. Certain provisions of this specification are
31、 the subject of international stmdardization agreement QSTAG-216 and 234. When amendment, revision, or cancellation of this specification is proposed which will affect or violate the international agreement con- cerned, the preparing activity will take appropriate reconciliation action through inter
32、national standardization channels including departmental stand- ardization offices, if required. Cuctoclian : Am - EA Preparing activity : Army - P. Project No, 4240-A626 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-“1 -7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
