Aerospace series - O-ring grooves - Dimensions

This standard specifies the dimensions of grooves for use with o-rings according to EN-standards for aerospace applications:
- radial sealing: rod or bore mounted o-rings;
- axial sealing: internal or external pressure source.

Luft- und Raumfahrt - Nuten für O-Ringe - Maße

Diese Norm legt die Maße der Nuten für O-Ringe nach EN-Normen für Anwendungen in der Luft- und Raumfahrt fest:
3 Radiale Abdichtung: im Kolben oder der Bohrung angeordnete O-Ringe;
3 Axiale Abdichtung: Innen- oder Außendruckquelle.

Série aérospatiale - Gorges pour joints toriques - Dimensions

La présente norme définit les dimensions des logements de joints toriques conformes aux normes EN pour les applications aérospatiales :
- étanchéité radiale : montage sur arbre et dans alésage ;
- étanchéité axiale : pression interne ou externe.

Aerospace series - O-ring grooves - Dimensions

General Information

Status
Published
Publication Date
30-Apr-2004
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-May-2004
Due Date
01-May-2004
Completion Date
01-May-2004

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Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - O-ring grooves - DimensionsLuft- und Raumfahrt - Nuten für O-Ringe - MaßeSérie aérospatiale - Gorges pour joints toriques - DimensionsAerospace series - O-ring grooves - Dimensions49.080Aerospace fluid systems and componentsICS:Ta slovenski standard je istoveten z:EN 3748:2001SIST EN 3748:2004en01-maj-2004SIST EN 3748:2004SLOVENSKI
STANDARD



SIST EN 3748:2004



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3748November 2001ICS 49.080English versionAerospace series - O-ring grooves - DimensionsSérie aérospatiale - Gorges pour joints toriques -DimensionsLuft- und Raumfahrt - Nuten für O-Ringe - MaßeThis European Standard was approved by CEN on 11 August 2001.CEN members are bound to comply with the CEN/CENELEC Internal 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 Management Centre or to any CEN member.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 Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3748:2001 ESIST EN 3748:2004



EN 3748:2001 (E)2ForewordThis European Standard has been prepared by the European Association of Aerospace Manufacturers(AECMA).After inquiries and votes carried out in accordance with the rules of this Association, this Standard hasreceived the approval of the National Associations and the Official Services of the member countries ofAECMA, prior to its presentation to CEN.This European Standard shall be given the status of a national standard, either by publication of an identicaltext or by endorsement, at the latest by May 2002, and conflicting national standards shall be withdrawn atthe latest by May 2002.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark,Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,Spain, Sweden, Switzerland and the United Kingdom.ContentsPage1Scope.32Normative references.33Symbols.34Required characteristics.34.1Configuration - Dimensions - Tolerances.34.1.1Radial sealing – Rod housing: Configuration code A.44.1.2Radial sealing – Bore housing: Configuration code B.104.1.3Axial sealing for internal pressure: Configuration code C.164.1.4Axial sealing for external pressure: Configuration code D.225Designation.286Drawing presentation.286.1Configuration code A.286.2Configuration code B.286.3Configuration code C.296.4Configuration code D.29SIST EN 3748:2004



EN 3748:2001 (E)31 ScopeThis standard specifies the dimensions of grooves for use with o-rings according to EN-standards foraerospace applications:– radial sealing: rod or bore mounted o-rings;– axial sealing: internal or external pressure source.2 Normative referencesThis European Standard incorporates by dated or undated reference provisions from other publications.These normative references are cited at the appropriate places in the text and the publications are listedhereafter. For dated references, subsequent amendments to or revisions of any of these publications applyto this European Standard only when incorporated in it by amendment or revision. For undated references,the latest edition of the publication referred to applies (including amendments).ISO 286-2ISO system of limits and fits – Part 2: Tables of standard tolerance grades and limitdeviations for holes and shaftsEN 3049Aerospace series – O-rings, in fluorocarbon rubber (FKM), low compression set – Hardness80 IRHDEN 3746Aerospace series – O-rings, in fluorosilicone rubber (FVMQ) – Hardness 80 IRHD 1)TR 4271Aerospace series – O-rings grooves – Design criteria for o-ring grooves – Basiccalculations 2)3 Symbolsb:o-ring groove widthd1:o-ring inside diameterd2:o-ring section diameterd3:o-ring groove diameter, rod mountedd4:bore diameter, rod mountedd5:rod outside diameter, bore mountedd6:o-ring groove diameter, bore mountedd7:o-ring groove outside diameter, internal pressured8:o-ring groove inside diameter, external pressured9:rod outside diameter, rod mountedd10:bore diameter, bore mountedh:groove heightR:edge radius on groover1:corner radius on groovet:housing depthZ:lead-in chamfer length4 Required characteristics4.1 Configuration - Dimensions - TolerancesOnly recommended sizes are given in the tables. They are applicable to EN 3049 and EN 3746. For othergroove or o-ring, refer to TR 4271.Dimensions and tolerances are in millimetres. Surface roughness values are in micrometres.1)Published as AECMA Prestandard at the date of publication of this standard2)Published as AECMA Technical Report at the date of publication of this standardSIST EN 3748:2004



EN 3748:2001 (E)44.1.1 Radial sealing – Rod housing: Configuration code AThis configuration corresponds to radial grooves in static applications, rod mounted. See figure 1 andtables 1 to 7.Key10° to 5°2Bore3Rod4No burrs permitted in this areaaSee table 1.bGroove diameter d3
50: maximum run-out tolerance Y = 0,025Groove diameter d3
50: maximum run-out tolerance Y = 0,05Figure 1Table 1RoughnessRaRmax.continuouspressurewith pressurevariationcontinuouspressurewith pressurevariationSurface 5 MPa 5 MPa 5 MPa 5 MPa 5 MPa 5 MPa 5 MPa 5 MPaSidesurfaces3,212,5GrooveInsidediameter1,66,3Homologoussurface1,61,61,60,86,36,36,33,2SIST EN 3748:2004



EN 3748:2001 (E)5Table 2d2bZr1Rnom.max.min.min.max.min.max.min.1,802,652,401,12,653,853,601,50,40,23,555,054,801,85,307,357,102,70,80,47,009,459,203,61,20,80,30,14.1.1.1 Section diameter d2 = 1,80Table 3d3d4d1d9Code anom.0 0,04 0,060f7 bA00404,004,247,007,00A00505,005,278,038,03A00606,006,309,069,06A00696,907,2410,0010,00A00878,759,1211,8811,88A010610,6011,0213,7813,78A012512,5012,9715,7315,73A014014,0014,5417,3017,30A016016,0016,6419,4019,40A018018,0018,6421,4021,40A021221,2021,9424,7024,70A023623,6024,4427,2027,20A028028,0028,9431,7031,70A031531,5032,5435,3035,30A035535,5036,6439,4039,40A036536,5037,6440,4040,40A037537,5038,6441,4041,40A038738,7039,8442,6042,60A040040,0041,2444,0044,00aSize code corresponding to the codification of o-rings, accordingto aerospace series EN standards.bSee ISO 286-2.SIST EN 3748:2004



EN 3748:2001 (E)64.1.1.2 Section diameter d2 = 2,65Table 4d3d4d1d9Code anom.0 0,05 0,070f7 bB00535,305,589,729,72B00696,907,2511,3911,39B00959,509,9014,0414,04B011211,2011,6615,8015,80B013213,2013,7617,9017,90B015015,0015,5619,7019,70B017017,0017,6621,8021,80B020020,0020,6624,8024,80B022422,4023,1627,3027,30B026526,5027,3631,5031,50B030030,0030,9635,1035,10B034534,5035,5639,7039,70B038738,7039,8644,0044,00B043743,7045,0649,2049,20B050050,0051,4655,6055,60B056056,0057,6661,8061,80B060060,0061,7665,9065,90B065065,0066,8671,0071,00B071071,0073,0677,2077,20B075075,0077,1681,3081,30B080080,0082,2686,4086,40aSize code corresponding to the codification of o-rings, accordingto aerospace series EN standards.bSee ISO 286-2.SIST EN 3748:2004



EN 3748:2001 (E)74.1.1.3 Section diameter d2 = 3,55Table 5d3d4d1d9Code anom.0 0,06 0,080f7 bC025025,0025,8231,3031,30C030030,0031,0236,5036,50C035535,5036,6242,1042,10C042542,5043,8249,3049,30C048748,7050,1255,6055,60C054554,5056,1261,6061,60C061561,5063,3268,8068,80C071071,0073,0278,5078,50C080080,0082,3287,8087,80C090090,0092,5298,0098,00C1000100,00102,82108,30108,30C1120112,00115,12120,60120,60C1150115,00118,22123,70123,70C1220122,00125,32130,80130,80C1320132,00135,62141,10141,10C1400140,00143,82149,30149,30C1500150,00154,12159,60159,60C1600160,00164,32169,80169,80C1700170,00174,62180,10180,10C1800180,00189,92195,40195,40C1900190,00195,12200,60200,60C2000200,00205,32210,80210,80C2120212,00217,62223,10223,10C2240224,00229,92235,40235,40C2360236,00242,32247,80247,80C2500250,00256,62262,10262,10aSize code corresponding to the codification of o-rings, accordingto aerospace series EN standards.bSee ISO 286-2.SIST EN 3748:2004



EN 3748:2001 (E)84.1.1.4 Section diameter d2 = 5,30Table 6d3d4d1d9Code anom.0 0,07 0,090f7 bD060060,0061,8270,2070,20D071071,0073,0281,4081,40D080080,0082,3290,7090,70D090090,0092,52100,90100,90D1090109,00112,02120,40120,40D1120112,00115,12123,50123,50D1180118,00121,22129,60129,60D1280128,00131,52139,90139,90D1360136,00139,72148,10148,10D1450145,00148,92157,30157,30D1550155,00159,22167,60167,60D1650165,00169,42177,80177,80D1750175,00179,72188,10188,10D1850185,00190,02198,40198,40D1950195,00200,22208,60208,60D2000200,00205,32213,70213,70aSize code corresponding to the codification of o-rings, accordingto aerospace series EN standards.bSee ISO 286-2.SIST EN 3748:2004



EN 3748:2001 (E)94.1.1.5 Section diameter d2 = 7,00Table 7d3d4d1d9Code anom.0 0,09 0,110f7 bE1090109,00112,06123,40123,40E1150115,00118,26129,60129,60E1250125,00128,46139,80139,80E1360136,00139,76151,10151,10E1450145,00148,96160,30160,30E1550155,00159,26170,60170,60E1650165,00169,46180,80180,80E1750175,00179,76191,10191,10E1850185,00189,96201,30201,30E1900190,00195,16206,50206,50E2000200,00205,36216,70216,70E2120212,00217,66229,00229,00E2240224,00229,86241,20241,20E2300230,00236,16247,50247,50E2430243,00249,46260,80260,80E2500250,00256,66268,00268,00E2580258,00264,86276,20276,20E2720272,00279,26290,60290,60E2800280,00287,46298,80298,80E2900290,00297,66309,00309,00E3000300,00307,96319,30319,30E3150315,00323,36334,70334,70E3250325,00333,56344,90344,90E3350335,00343,86355,20355,20E3450345,00354,06365,40365,40E3550355,00364,36375,70375,70E3650365,00374,56385,90385,90E3750375,00384,86396,20396,20E3870387,00397,16408,50408,50E4000400,00410,46421,80421,80aSize code corresponding to the codification of o-rings, accordingto aerospace series EN standards.bSee ISO 286-2.SIST EN 3748:2004



EN 3748:2001 (E)104.1.2 Radial sealing – Bore housing: Configuration code BThis configuration (not recommanded) corresponds to radial grooves in static applications, bore mounted.See figure 2 and tables 8 to 14.Key10° to 5°2Rod3Bore4No burrs permitted in this areaaSee table 8.bGroove diameter d6
50: maximum run-out tolerance Y = 0,025Groove diameter d6
50: maximum run-out tolerance Y = 0,05Figure 2Table 8RoughnessRaRmax.continuouspressurewith pressurevariationcontinuouspressurewith pressurevariationSurface 5 MPa 5 MPa 5 MPa 5 MPa 5 MPa 5 MPa 5 MPa 5 MPaSidesurfaces3,212,5GrooveInsidediameter1,66,3Homologoussurface1,61,61,60,86,36,36,33,2SIST EN 3748:2004



EN 3748:2001 (E)11Table 9d2bZr1Rnom.max.min.min.max.min.max.min.1,802,652,401,12,653,853,601,50,40,23,555,054,801,85,307,357,102,70,80,47,009,459,203,61,20,80,30,14.1.2.1 Section diameter d2 = 1,80Table 10d5d6d1d10Code anom.0 0,04 0,060H8 bA00404,004,297,134,37A00484,875,157,995,23A00565,605,848,685,92A00676,706,869,706,94A00808,008,1611,008,24A00878,758,8611,708,94A010010,0010,0612,9010,14A011811,8011,8614,7011,94A014014,0013,9616,8014,04A016016,0015,9618,8016,04A018018,0017,8620,7017,94A020020,0019,8622,7019,94A022422,4022,1625,0022,24A025025,0024,6627,5024,74A028028,0027,6630,5027,74A032532,5032,0634,9032,14A036536,5036,0638,9036,14A040040,0039,3642,2039,44aS
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