1、BRITISH STANDARDBS EN 3746:2007Aerospace series O-rings, in fluorosilicone rubber (FVMQ) Hardness 80 IRHDThe European Standard EN 3746:2007 has the status of a British StandardICS 49.025.40g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g5
2、1g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 3746:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2007 BSI 2007ISBN 978 0 580 53954 1National forewordThis British Standard is the U
3、K implementation of EN 3746:2007. It supersedes BS EN 3746:2003 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems.A list of organizations represented on this committee can be obtained on request to its se
4、cretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDA
5、RDNORME EUROPENNEEUROPISCHE NORMEN 3746June 2007ICS 49.025.40 Supersedes EN 3746:2003 English VersionAerospace series - O-rings, in fluorosilicone rubber (FVMQ) -Hardness 80 IRHDThis European Standard was approved by CEN on 11 September 2003.CEN members are bound to comply with the CEN/CENELEC Inter
6、nal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member
7、.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are
8、 the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerla
9、nd and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3746:
10、2007: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Required characteristics.4 4 Storage10 5 Designation 10 6 Marking/Packaging 10 7 Technical specification .10 EN 3746:20073 Foreword This document (EN 3746:2007) has been prepared by the Aerospace and Defence Industries Association
11、 of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This Europ
12、ean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2007, and conflicting national standards shall be withdrawn at the latest by December 2007. Attention is drawn to the possibility that some of the el
13、ements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 3746:2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
14、 countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia
15、, Spain, Sweden, Switzerland and the United Kingdom. EN 3746:20074 1 Scope This standard specifies the characteristics of O-rings in fluorosilicone rubber FVMQ, hardness 80 IRHD, for aerospace applications. They are intended to be used in air, mineral/synthetic oil and fuel systems. Operating condit
16、ions Temperature: a) Continuous operation: 55 C to 150 C; b) Intermittent service: 55 C to 200 C. Limitation: not to be used with phosphoric ester type hydraulic fluids (permanent or temporary immersion). 2 Normative references The following referenced documents are indispensable for the application
17、 of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3601-1, Fluid power systems O-rings Part 1: Inside diameters, cross-sections, tolerances and size identification code
18、. EN 2751, Aerospace series Storage conditions for rubber products Requirements for storage, cleaning and maintenance. 1)EN 3747, Aerospace series O-rings, in fluorosilicone rubber (FVMQ) Technical specification. EN 3827, Aerospace series Fluorosilicone rubber (FVMQ) Hardness 80 IRHD. 2)3 Required c
19、haracteristics 3.1 Configuration Dimensions Tolerances Masses See Figures 1 to 5 and Tables 1 to 5. Dimensions and tolerances are in millimetres. 3.2 Material EN 3827 1) In preparation at the date of publication of this standard. 2) Published as ASD Prestandard at the date of publication of this sta
20、ndard. EN 3746:20075 Figure 1 Table 1 Section diameter d2= 1,8 0,08 a Code A d1d1d1Code nom. Tol. Mass bCode nom. Tol. Mass bCode nom. Tol. Mass b0018 1,8 0,04 0100 10,0 0,15 0,135 0365 36,5 0,31 0,45 0020 2,0 0106 10,6 0,14 0375 37,5 0,46 0022 2,24 0112 11,2 0,16 0,15 0387 38,7 0,32 0,47 0025 2,5 0
21、,05 0118 11,8 0,16 0400 40,0 0,33 0,49 0028 2,8 0125 12,5 0,165 0412 41,2 0,34 0,50 0031 3,15 0,055 0132 13,2 0,17 0,17 0425 42,5 0,51 0035 3,55 0140 14,0 0,18 0437 43,7 0,35 0,525 0037 3,75 0,06 0150 15,0 0,18 0,19 0450 45,0 0,36 0,54 0040 4,0 0160 16,0 0,19 0,20 0475 47,5 0,38 0,57 0045 4,5 0,07 0
22、170 17,0 0,22 0500 50,0 0,39 0,60 0048 4,87 0180 18,0 0,20 0,23 0530 53,0 0,41 0,63 0050 5,0 0190 19,0 0,24 0560 56,0 0,42 0,67 0051 5,15 0200 20,0 0,21 0,25 0600 60,0 0,45 0,71 0053 5,3 0,08 0212 21,2 0,22 0,27 0630 63,0 0,46 0,75 0056 5,6 0,09 0224 22,4 0,23 0,28 0670 67,0 0,49 0,80 0060 6,0 0236
23、23,6 0,30 0710 71,0 0,51 0,85 0063 6,3 0250 25,0 0,24 0,31 0750 75,0 0,53 0,89 0067 6,7 0,13 0,10 0258 25,8 0,32 0800 80,0 0,56 0,95 0069 6,9 0265 26,5 0,25 0,33 0850 85,0 0,59 1,00 0071 7,1 0,11 0280 28,0 0,26 0,345 0900 90,0 0,62 1,07 0075 7,5 0,12 0300 30,0 0,27 0,37 0950 95,0 0,64 1,12 0080 8,0
24、0,14 0315 31,5 0,28 0,38 1000 100,0 0,67 1,18 0085 8,5 0,125 0325 32,5 0,40 1060 106,0 0,71 1,25 0087 8,75 0335 33,5 0,29 0,41 1120 112,0 0,74 1,32 0090 9,0 0345 34,5 0,30 0,42 1180 118,0 0,77 1,39 0095 9,5 0,15 0,13 0355 35,5 0,31 0,43 1250 125,0 0,81 1,47 aConforms to ISO 3601-1. bMass kg/1 000 pi
25、eces. EN 3746:20076 Figure 2 Table 2 Section diameter d2= 2,65 0,09 a Code B d1d1d1Code nom. Tol. Mass bCode nom. Tol. Mass bCode nom. Tol. Mass b0045 4,5 0,18 0315 31,5 0,28 0,85 0710 71,0 0,51 1,85 0053 5,3 0,20 0325 32,5 0,89 0730 73,0 0,52 1,90 0060 6,0 0,13 0,22 0335 33,5 0,29 0,91 0750 75,0 0,
26、53 1,95 0069 6,9 0,24 0345 34,5 0,30 0,93 0800 80,0 0,56 2,07 0080 8,0 0,14 0,27 0355 35,5 0,96 0850 85,0 0,59 2,20 0090 9,0 0,29 0365 36,5 0,31 0,98 0900 90,0 0,62 2,32 0095 9,5 0,31 0375 37,5 1,01 0950 95,0 0,64 2,45 0100 10,0 0,32 0387 38,7 0,32 1,03 1000 100,0 0,67 2,58 0106 10,6 0,15 0,33 0400
27、40,0 0,33 1,07 1060 106,0 0,71 2,73 0112 11,2 0,345 0412 41,2 0,34 1,10 1120 112,0 0,74 2,80 0118 11,8 0,16 0,36 0425 42,5 1,14 1180 118,0 0,77 3,02 0125 12,5 0,39 0437 43,7 0,35 1,16 1250 125,0 0,81 3,21 0132 13,2 0,40 0450 45,0 0,36 1,20 1320 132,0 0,85 3,38 0140 14,0 0,17 0,405 0462 46,2 0,37 1,2
28、2 1400 140,0 0,89 3,58 0150 15,0 0,45 0475 47,5 1,26 1500 150,0 0,95 3,83 0160 16,0 0,18 0,47 0487 48,7 0,38 1,28 1600 160,0 1,00 4,08 0170 17,0 0,19 0,49 0500 50,0 0,39 1,32 1700 170,0 1,06 4,33 0180 18,0 0,52 0515 51,5 0,40 1,36 1800 180,0 1,11 4,58 0190 19,0 0,2 0,54 0530 53,0 0,41 1,39 1900 190,
29、0 1,17 4,83 0200 20,0 0,57 0545 54,5 1,43 2000 200,0 1,22 5,09 0212 21,2 0,21 0,60 0560 56,0 0,42 1,47 2120 212,0 1,29 5,38 0224 22,4 0,23 0,63 0580 58,0 0,44 1,53 2240 224,0 1,35 5,69 0236 23,6 0,66 0600 60,0 1,57 2300 230,0 1,39 5,84 0250 25,0 0,24 0,70 0615 61,5 0,45 1,61 2360 236,0 1,42 6,00 025
30、8 25,8 0,71 0630 63,0 0,46 1,65 2430 243,0 1,46 6,17 0265 26,5 0,25 0,73 0650 65,0 0,48 1,70 2500 250,0 1,49 6,34 0280 28,0 0,26 0,77 0670 67,0 0,49 1,75 0300 30,0 0,27 0,82 0690 69,0 0,50 1,80 aConforms to ISO 3601-1. bMass kg/1 000 pieces. EN 3746:20077 Figure 3 Table 3 Section diameter d2= 3,55 0
31、,10 a Code C d1d1d1d1Code nom. Tol. Mass bCode nom. Tol. Mass bCode nom. Tol. Mass bCode nom. Tol. Mass b0140 14,0 0,79 0400 40,0 0,33 1,97 0775 77,5 0,55 3,67 1650 165,0 1,03 7,620150 15,0 0,18 0,84 0412 41,2 0,34 2,02 0800 80,0 0,56 3,78 1700 170,0 1,06 7,850160 16,0 0,19 0,88 0425 42,5 2,08 0825
32、82,5 0,57 3,89 1750 175,0 1,09 8,070170 17,0 0,93 0437 43,7 0,35 2,14 0850 85,0 0,59 4,00 1800 180,0 1,11 8,300180 18,0 0,20 0,97 0450 45,0 0,36 2,19 0875 87,5 0,60 4,11 1850 185,0 1,14 8,530190 19,0 1,02 0462 46,2 0,37 2,25 0900 90,0 0,62 4,23 1900 190,0 1,17 8,750200 20,0 0,21 1,06 0475 47,5 2,30
33、0925 92,5 0,63 4,34 1950 195,0 1,20 8,970212 21,2 0,22 1,12 0487 48,7 0,38 2,36 0950 95,0 0,64 4,45 2000 200,0 1,22 9,200224 22,4 0,23 1,18 0500 50,0 0,39 2,42 0975 97,5 0,66 4,57 2120 212,0 1,29 9,740236 23,6 1,23 0515 51,5 0,40 2,48 1000 100,0 0,67 4,68 2240 224,0 1,35 10,290250 25,0 0,24 1,29 053
34、0 53,0 0,41 2,55 1030 103,0 0,69 4,82 2300 230,0 1,39 10,560258 25,8 1,32 0545 54,5 2,62 1060 106,0 0,71 4,95 2360 236,0 1,42 10,830265 26,5 0,25 1,36 0560 56,0 0,42 2,69 1090 109,0 0,72 5,09 2500 250,0 1,49 11,470280 28,0 0,26 1,43 0580 58,0 0,44 2,78 1120 112,0 0,74 5,23 2580 258,0 1,54 11,810300
35、30,0 0,27 1,52 0600 60,0 2,88 1150 115,0 0,76 5,36 2660 266,0 1,57 12,140315 31,5 0,28 1,58 0615 61,5 0,45 2,94 1180 118,0 0,77 5,50 2800 280,0 1,65 12,820325 32,5 1,63 0630 63,0 0,46 3,00 1220 122,0 0,80 5,67 2900 290,0 1,71 13,280335 33,5 0,29 1,68 0650 65,0 0,48 3,10 1250 125,0 0,81 5,82 3000 300
36、,0 1,76 13,720345 34,5 0,30 1,72 0670 67,0 0,49 3,19 1280 128,0 0,83 5,95 3150 315,0 1,84 14,400355 35,5 1,76 0690 69,0 0,50 3,28 1320 132,0 0,85 6,13 3350 335,0 1,95 15,300365 36,5 0,31 1,81 0710 71,0 0,51 3,37 1360 136,0 0,87 6,31 3550 355,0 2,06 16,210375 37,5 1,86 0730 73,0 0,52 3,46 1400 140,0
37、0,89 6,49 0387 38,7 0,32 1,91 0750 75,0 0,53 3,55 1450 145,0 0,92 6,72 aConforms to ISO 3601-1. bMass kg/1 000 pieces. EN 3746:20078 Figure 4 Table 4 Section diameter d2= 5,30 0,13 a Code D d1d1d1Code nom. Tol. Mass bCode nom. Tol. Mass bCode nom. Tol. Mass b0375 37,5 4,29 0670 67,0 0,49 7,26 1180 1
38、18,0 0,77 12,38 0387 38,7 0,32 4,42 0690 69,0 0,50 7,46 1220 122,0 0,80 12,78 0400 40,0 0,33 4,55 0710 71,0 0,51 7,66 1250 125,0 0,81 13,08 0412 41,2 0,34 4,67 0730 73,0 0,52 7,86 1280 128,0 0,83 13,38 0425 42,5 4,80 0750 75,0 0,53 8,06 1320 132,0 0,85 13,79 0437 43,7 0,35 4,91 0775 77,5 0,55 8,32 1
39、360 136,0 0,87 14,19 0450 45,0 0,36 5,05 0800 80,0 0,56 8,57 1400 140,0 0,89 14,59 0462 46,2 0,37 5,17 0825 82,5 0,57 8,82 1450 145,0 0,92 15,09 0475 47,5 5,30 0850 85,0 0,59 9,07 1500 150,0 0,95 15,59 0487 48,7 0,38 5,42 0875 87,5 0,60 9,32 1550 155,0 0,98 16,09 0500 50,0 0,39 5,55 0900 90,0 0,62 9
40、,57 1600 160,0 1,00 16,59 0515 51,5 0,40 5,69 0925 92,5 0,63 9,82 1650 165,0 1,03 17,09 0530 53,0 0,41 5,85 0950 95,0 0,64 10,07 1700 170,0 1,06 17,59 0545 54,5 6,00 0975 97,5 0,66 10,32 1750 175,0 1,09 18,09 0560 56,0 0,42 6,15 1000 100,0 0,67 10,57 1800 180,0 1,11 18,60 0580 58,0 0,44 6,36 1030 10
41、3,0 0,69 10,87 1850 185,0 1,14 19,11 0600 60,0 6,55 1060 106,0 0,71 11,18 1900 190,0 1,17 19,61 0615 61,5 0,45 6,71 1090 109,0 0,72 11,47 1950 195,0 1,20 20,11 0630 63,0 0,46 6,86 1120 112,0 0,74 11,78 2000 200,0 1,22 20,61 0650 65,0 0,48 7,05 1150 115,0 0,76 12,08 aConforms to ISO 3601-1. bMass kg/
42、1 000 pieces. EN 3746:20079 Figure 5 Table 5 Section diameter d2= 7,00 0,15 a Code E d1d1d1Code nom. Tol. Mass bCode nom. Tol. Mass bCode nom. Tol. Mass b1090 109,0 0,72 20,32 1750 175,0 1,09 31,88 2720 272,0 1,61 48,86 1120 112,0 0,74 20,84 1800 180,0 1,11 32,75 2800 280,0 1,65 50,26 1150 115,0 0,7
43、6 21,37 1850 185,0 1,14 33,60 2900 290,0 1,71 52,01 1180 118,0 0,77 21,89 1900 190,0 1,17 34,50 3000 300,0 1,76 53,77 1220 122,0 0,80 22,59 1950 195,0 1,20 35,38 3070 307,0 1,80 55,00 1250 125,0 0,81 23,11 2000 200,0 1,22 36,25 3150 315,0 1,84 56,39 1280 128,0 0,83 23,64 2060 206,0 1,26 37,30 3250 3
44、25,0 1,90 58,14 1320 132,0 0,85 24,34 2120 212,0 1,29 38,35 3350 335,0 1,95 59,90 1360 136,0 0,87 25,04 2180 218,0 1,32 39,38 3450 345,0 2,00 61,64 1400 140,0 0,89 25,75 2240 224,0 1,35 40,46 3550 355,0 2,06 63,40 1450 145,0 0,92 26,62 2300 230,0 1,39 41,51 3650 365,0 2,11 65,15 1500 150,0 0,95 27,4
45、9 2360 236,0 1,42 42,56 3750 375,0 2,16 66,90 1550 155,0 0,98 28,37 2430 243,0 1,46 43,78 3870 387,0 2,23 69,00 1600 160,0 1,00 29,24 2500 250,0 1,49 45,00 4000 400,0 2,29 71,27 1650 165,0 1,03 30,12 2580 258,0 1,54 46,41 1700 170,0 1,06 30,99 2650 265,0 1,57 47,64 aConforms to ISO 3601-1. bMass kg/
46、1 000 pieces. EN 3746:200710 4 Storage EN 2751 5 Designation EXAMPLE Description block O-RING Identity block EN3746C0875 Number of this standard Section diameter code (see Tables 1 to 5) Diameter code (see Tables 1 to 5) NOTE If necessary the code I9005 shall be placed between the description block
47、and the identity block. 6 Marking/Packaging EN 3747 7 Technical specification EN 3747 EN 3746:2007blankBS EN 3746:2007BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on sta
48、ndards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions.It is the constant aim of BSI to improve the quality o
49、f our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400.BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards.Buying standardsOrders for a
