1、r- I MIL-M-87Lb3A Lb 7979906 0207463 6 = - fl FSC -1660 I / v MIL-M-87163A(USAF) 18 February 1983 SUPERSEDING 3 December 1982 MIL-M-87 163( USAF) MILITARY SPECIFICATION MASK, OXYGEN MBU-l2/P This specification is approved for use by the Department Departments and Agencies of the Department of Defens
2、e. of the Air Force, and is available for use by all 1. SCOPE 1.1 Scope. This specification covers the requirements for one type of pressure-demand breathing oxygen mask, designated MBU-l2/P. 2. APPLICABLE DOCUMENTS 2.1 Government documents 2.1.1 SD ecifications, standards, and handbooks . Unless ot
3、herwise specified, the following specifications, standards, and handbooks of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DODISS) specified in the solicitation form a part of this specification to the extent specified herein. SPECIFICATIONS r FED
4、ERAL BB-N-4 1 1 BB-A-1034 UU-P-268 ZZ-R-765 PPP-B-576 PPP-B-5 8 5 PPP-B-59 1 PPP-B-60 1 PPP-B-62 1 P PP - B- 6 3 6 PPP-T-60 Nitrogen, Technical Air, Compressed, For Breathing Purposes Paper, Kraft, Wrapping Rubber, Silicone; Low And High Temperatures And Tear Resistance Box, Wood, Cleated, Veneer, P
5、aper Overlaid Box, Wood, Wirebound I Box, Fiberboard, Wood-Cieated Box, Wood, Cleated-Plywood Box, Wood, Nailed And Lock-Corner Box, Fiberboard Tape, Pressure Sensitive Adhesive, Waterproof For Packaging fA PAGES. THIS DOCWENT CONTMNs MILITARY MIL-P- 1 1 6 Preservation, Method Of MIL MIL nC-5040 Cor
6、d, Nylon -F-7 179 Finishes And Coatings; Protection Of Aerospace Weapons Systems, Structures And Parts; General Specification For Beneficial comments, (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: ASDIENESS, Wrig
7、ht-Patterson AFB, OH 45433 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-M-B7Lb3A Lb m 7777906 020746
8、4 A m MIL-T-8363 MIL-L-10547 MIL-0-27210 MIL-V-27296 STANDARDS FEDERAL FED-STD-595 FED-STD-601 MILITARY DOD-STD-100 MIL-STD-129 MIL-STD-130 MIL-STD-143 MIL-STD-810 MIL-STD-831 MIL-STD-889 I4527796 Tape And Webbing, Textile, Woven, Nylon Liners, Case, And Sheet, Overwrap, Water-Vaporproof Or Waterpro
9、of, Flexible Oxygen, Aviators Breathing, Liquid And Gas Valve, Oxygen Mask, Combination Inhalation And Exhalation Colors Rubber: Sampling And Testing Engineering Drawing Practices Marking For Shipment And Storage Identification Marking Of US Military Property Standards And Specifications, Order Of P
10、recedence For The Selection Of Environmental Test Methods Test Reports, Preparation Of Dissimilar Metals Connector - Bayonet, Three Pin, Oxygen Mask (Copies of specifications and standards required by manufacturers in connection with specific acquisition functions should be obtained from the contrac
11、ting activity or as directed by the contracting officer.) 2.1.2 Other Government draw- . The following other Government drawings form a part of this specification to the extent specified herein. DRAWINGS Scott Aviation - Sierra Products, Inc (Code 92114) 00-6268 249-425 266-1 14 339-0601 450- 13 450
12、-1 34A 834-1 1 834- 12 834-1 6 834- 18 834-25 834-37 834-42 834-48 834-75 834-28-1 , -2 , -3 , or -4 Microphone Bracket Upper Cable Guide Bayonet Connector Cord and Snap Assembly Lower Cable Guide Two Position Clamp Strap and Buckle Assembly Capped “T“ Nut Identification Label Delivery Tube Hardshel
13、l and Facepiece Mask and Strap Assembly Receptacle Assembly Gasket Dust Cover Mask, Oxygen, MEU-12/P (Copies of drawings required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer. ) I 2 Provi
14、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-B7Lb3A Lb 7979906 0207465 T Mi MIL-M-87163A(USAF) 2.2 Qth er Dub lications. specification to the extent specified herein. which are indicated as DOD adopted shall be the issue in the current DODISS and
15、 the supplement thereto, if applicable. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D624-8 1 (Application for copies should be addressed to the American Society for Testing and Materials; 1916 Race Street; Philadelphia, Pennsylvania 19103.) The following document forms a part of this The issue
16、s of the documents Tear Resistance Of Vulcanized Rubber 2.3 Order of D recedence. In the even of a conflict between the text of this specification and the references cited herein, the text of this specification shall take precedence. 3. REQUIREMENTS 3.1 products which are qualified for listing on th
17、e applicable qualified products list at the time set for opening of bids (see 4.4 and 6.3). QU alificatio n. The masks furnished under this specification shall be 3.2 Selection of sDe cifications and standards. Specifications and standards for necessary commodities and services not specified herein
18、shall be selected in accordance with MIL-STD-143. 3.3 Mat erials. shall be as specified herein. Materials not covered by specifications, or not specifically described herein, shall be of the best quality, of the lightest practicable weight, and suitable for the purpose intended. Mask components that
19、 come in contact with oxygen shall be entirely free of oil, grease, or other combustible materials. Materials shall conform to the applicable specifications and 3.3.1 Metals. Metals shall be corrosion-resistant or suitably treated to resist corrosion due to fuels, salt spray, or any atmospheric cond
20、itions likely to be met in storage or normal service. 3.3.1.1 Dissimilar metals. Unless otherwise specified herein, dissimilar metals as defined in MIL-STD-889 having metal-to-metal contact shall not be acceptable. If necessary, combinations of dissimilar metals that have relatively weak galvanic po
21、tential may be used provided that their contact surfaces are separated and protected by a passive coating. Any dissimilar metal and protective coating combination proposed to be used shall be presented, prior to fabrication or installation, to the procuring activity for acceptance. .- 3.3.1.2 protec
22、tive treatment. If metals that are subject to deterioration from climatic and environmental conditions likely to occur during service are used, the metals shall be protected in accordance with MIL-F-7179 against this deterioration in a manner that will not in any way prevent compliance with the perf
23、ormance requirements specified herein. The protective coating shall not crack, chip, or scale with age or extremes of climatic and environmental conditions. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.3.2 Nonmetallic materials. Nonmetallic ma
24、terials shall be of the ozone resistant type. Materials that are not susceptible to fungus attack shall be used to the greatest extent possible. Materials that are susceptible to fungus attack, if used, shall be treated with a fungicidal agent that will not adversely affect the skin, eyes, and respi
25、ratory tract of the wearer. 3.3.2.1 Silicone rubber. The material for the facepiece, the delivery tube, and the microphone cable guides shall be silicone rubber conforming to class 3a, grade 5a of ZZ-R-765, except for the hardness and brittle point requirements described in 3.5.8.2 and 3.5.8.3 of th
26、is specification. In addition, conformance to the oil immersion, flex, and low temperature brittle point requirements of ZZ-R-765 shall not be required. The silicone rubber shall be smooth and free from flash, foreign materials, and imperfections. The silicone rubber shall be post-cured in a well ve
27、ntilated forced air oven. The date (year and quarter) the silicone rubber was cured shall be molded on the facepiece and on the delivery tube, 3.3.2.2 Plastic hardshell. The material for the hardshell shall be polysulfone conforming to Union Carbide (Code 80524) type P1700, or equivalent. 3.3.2.3 pl
28、astic receDtacle. The body of the receptacle shall be injection molded from acrylonitrile-butadiene-styrene molding plastic Borg-Warner, Cycolac T, or equivalent and shall be black. 3.3.2.4 Nvlon cord. The nylon cord for the cord and snap assembly shall conform to type 1A of MIL-C-5040. 3.3.2.5 Webb
29、ing. The webbing for the strap assembly shall conform to type V of MIL-T-8363. 3.4 Desian and construction. The MBU-l2/P mask shall be designed as an oxygen breathing device for use with a flight helmet. shall be constructed in accordance with Drawing 834-75, the subsidiary drawings listed below, an
30、d the requirements specified herein. If the requirements of the drawings conflict with the requirements of this specification, the requirements of this specification shall govern. The mask and its components DRAWING 834-25 834-18 450-1 34A 339-06-1 2 4 9-425 450- 13 834-48 00-6268 834-37 834- 1 1 83
31、4-28-1, -2, -3, 266-1 14 834-12 834-42 and -4 COMPONENT Facepiece and Hardshell ( 3.4.2) Delivery Tube (3.4.3) Two-Position Hose Clamp (3.4.4) Cord and Snap Assembly (3.4.5) Upper Cable Guide (3.4.6) Lower Cable Guide (3.4.6) .Dust Cover (3.4.7) Microphone Bracket ( 3.4.8 Receptacle Assembly (3.4.9)
32、 Strap and Buckle Assembly (3.4.10) Mask and Strap Assembly Bayonet Connector Capped lfT1l Nut Gasket QUANTITY 1 1 2 1 1 1 1 1 1 4 4 sizes 1 1 1 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-87 1 63A ( USAF 3.4.1 Combination val ve. A combi
33、nation inhalation-exhalation valve conforming to MIL-V-27296 shall be inserted in the mask as shown on figure 1. 3.4.2 FaceDiece and hardshel 1. The facepiece shall consist of a polysulfone hardshell to which the silicone rubber face seal is intimately bonded to produce a single composite facepiece
34、assembly. 3.4.3 Deli verv tube. corrugated silicone. hose clamps (3.4.4) as shown on figure 1. 3.4.4 attach the delivery tube to the combination valve as shown on figure 1. lower hose clamp shall be attached to the delivery tube as shown on Drawing The delivery tube for the mask shall be constructed
35、 of The delivery tube shall have cable guides (3.4.6) and Two-Dosition hos e clams . An upper hose clamp (Drawing 450-134A) shall A 834-75 3.4.4.1 J,ow er hose clamo. The lower hose clamp shall be packaged in a polyethylene bag together with the lower cable guide (3.4.6) and stapled to the cord and
36、snap assembly (3.4.5) as shown on Drawing 834-75. 3.4.5 Cord and snaD asse mblg. shall be installed inside the delivery tube by attaching?a nylon loop to the combination valve retention pin and metal snap to the connector retention pin. The snap shall be 1-3/16 inches in length (110-pound test) and
37、shall be attached to one end of the nylon cord as shown on figure 2. A nylon cord and snap assembly (Drawing 339-06) 3.4.6 ypDe r and low er cable auides . shall be attached to the delivery tube as shown on figure 1. Drawing 834-75. An upper cable guide (Drawing 249-4251 A lower cable - guide (Drawi
38、ng 450-13) shall be attached to the delivery tube as shown on 3.4.6.1 Low er cable auide . The lower cable guide shall be packaged as specified in 3.4.4.1. 3.4.7 Dust CO ver. dust, dirt, and foreign objects from entering the mask cavity when the mask is not in use. The cover shall be made of durable
39、, nonbrittle, lightweight plastic material contoured to rest around the face edge of the hardshell and to be retained on the hardshell with an elastic webbing around the front edge of the hardshell at the microphone contour. The mask shall be equipped with a dust cover to prevent 3.4.8 )icrorhone br
40、acket . A microphone mounting bracket (Drawing 00-6268) shall be attached inside the mask facepiece as shown on figure 1. 3.4.9 BeCeDta cle asse mbby. A receptacle assembly (Drawing 834-37) shall be installed on the flatcenter area of the mask hardshell as shown on figure 1. A silicone rubber gasket
41、 (Drawing 834-42) shall be placed between the receptacle and hardshell. 3.4.10 Strap a nd bu ckIe ass emblv. required for each mask. shown on figure 3 with a self-sealing screw and capped llT1l nut (Drawing Four strap and buckle assemblies shall be The assemblies shall be attached to the facepieces
42、as 834-12). 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-M-87Lb3A Lb m 7777906 0207467 7 m W 3 a z O I- A I X w - a a e2 O - I- A I z z O I
43、- a z m H O o a a - - - n am z, (38 Zm m w o z r - m z O m z w - 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-87Lb3A Lb W 777770b 0207470 3 W w F-i =Y =o w w 3 I- m n 00 w I m I I a I o z 3 n a a o v) f 8 Provided by IHSNot for ResaleNo re
44、production or networking permitted without license from IHS-,-,-MIL-M-87Lb3A Lb = 33Ob 0207Ll73 5 MZL-M-87163A( USAF) 3.4.11 .Weight. The weight (mass) of the mask assembly of each size shall not exceed 1.1 pounds. The components included in the mask assembly shall be those listed in 3.4. . 3.5 perf
45、ormance 3.5.1 Tens ile bondinn st remth . The tensile strength of the bond between the silicone rubber and the hardshell material used in the facepiece shall be greater than the tensile strength of the silicone rubber, when tested in accordance with 4.6.1. 3.5.2 Mask lea ka Re . The inboard leakage
46、shall not exceed 100 milliliters per minute when tested in accordance with 4.6.2. 3.5.3 Combination valve installation, inlet De rformance (ow suction) . The total leakage through the combination valve inlet portion shall be 15 milliliters per minute or less when tested in accordance with 4.6.3. 3.5
47、.4 Combinat ion valve insta llation, in let Derf ormance (ugh suction) . The total leakage through the combination valve inlet portion shall be 150 milliliters per minute or less when tested in accordance with 4.6.4. 3.5.5 Combination val ve installatio n. exhalation De rformance . A pressure of 20
48、millimeters of mercury in the facepiece and a pressure between 15 and 19.9 millimeters of mercury in the inlet tubing shall 6ause the exhalation portion of the valve to open when tested in accordance with 4.6.5, 3.5.6 Combination val ve installation. exhalation resistance . The exhalation resistance
49、 shall not be greater than 4.67 millimeters of mercury with a flow of 100 liters per minute when tested in accordance with 4.6.6. 3.5.7 Combinat ion valve insta llation? inha lation resista nee. The inhalation resistance shall not exceed 2.80 millimeters of mercury at a flow of 50 liters per minute and shall not exceed 5.60 millimeters of mercury at a flow of 100 liters per minute when tested in accordance with 4.6.7
