1、CEN PREN*3747 94 m 3404589 O080979 053 m AECMA STANDARD NORME AECMA AECMA NORM prEN 3747 Edition P 1 November 1994 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 UDC : Descr
2、iptors : ENGLISH VERSION Aerospace series O-rings, in fluorosilicone rubber (FVMQI Technical specification Srie arospatiale Joints toriques, en lastomre fluorosilicone (FVMQ) Spcification technique Luft- und Raumfahrt O-Ringe, aus Fluorosilikon (FVMQ) Technische Lieferbedingungen This “Aerospace Ser
3、ies“ Prestandard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee following comment
4、by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checki
5、ng Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau -
6、 92138 ISSY-LES-MOULINEAUX CEDEX C8 Chairman I Comments should be sent within six months after the date of publication to I Edition approved for publication 1994-11-18 AECMA Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE Mr Williams I I aecma 1991 CEN PRENg374
7、7 94 3404589 0080980 875 Page 2 prEN 3747 : 1994 Contents list 1 2 3 4 5 Scope Normative references Definitions Quality assurance Requirements Annex A (normative) - laminate consisting of aluminium, paper and polyethylene ; - opaque polyethylene film. The use of polyvinyl chloride film (PVC film) is
8、 not permissible. Transparent or translucent materials shall not be used. A.1.3 Dimensions of the individual packages Depending on the size of the O-rings to be packed the following outside dimensions shall be applied for individual packages : 55mmx 55mrn 1) 205 mm x 205 mm l) 75mmx 75mrn 255 mm x 2
9、55 mm l) 100 mrn x 100 mm 1) 150 mm x 150 rnm l) 300 mm x 300 mm 400 mm x 400 mm The individual packages shall not be any larger than necessary. O-rings up to 205 mm internal diameter shall be packed flat (no loops or distorsion). 1) Sizes in accordance with IS0 1749 CEN PRENr3747 94 m 3404589 00809
10、86 293 W Page 8 prEN 3747 : 1994 A. 1.4 Marking Each individual and each carton package shall be legibly marked with not less than the following information : - Manufacturers identification ; - Identity according to the product standard ; - Lot number or test report number ; - Purchase order number
11、 - Quarter and year of vulcanization (e.g. 3Q93) ; - Manufacturing inspection stamp ; - DO NOT BEND. A. 1.5 Collective packaging Packaged O-rings shall be packed in cartons in such a manner that the O-rings in their packages during shipment and storage will not be permanently distorted and will be protected against damage from exposure to weather or any other normal hazard.
