EN 4054:2004

SLOVENSKI STANDARD
01-junij-2005
1DGRPHãþD
SIST EN 4054:2004
Aerospace series - Pipe couplings, loose flanges and seals - Seals in fluorocarbon
rubber and armature in aluminium alloy - Technical specification
Aerospace series - Pipe couplings, loose flanges and seals - Seals in fluorocarbon
rubber and armature in aluminium alloy - Technical specification
Luft- und Raumfahrt - Rohrverbindungen mit losen Flanschen und Flachdichtungen -
Dichtungen aus Fluorcarbon-Elastomer mit Aluminiumarmierung - Technische
Lieferbedingungen
Série aérospatiale - Raccords, brides amovibles et joints - Joints en élastomere
fluorocarbone et armature en alliage d'aluminium - Spécification technique
Ta slovenski standard je istoveten z: EN 4054:2004
ICS:
49.025.20 Aluminij Aluminium
49.080 /HWDOVNLLQYHVROMVNL Aerospace fluid systems and
KLGUDYOLþQLVLVWHPLLQGHOL components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 4054
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2004
ICS 49.080 Supersedes EN 4054:2003
English version
Aerospace series - Pipe couplings, loose flanges and seals -
Seals in fluorocarbon rubber and armature in aluminium alloy -
Technical specification
Série aérospatiale - Raccords, brides amovibles et joints - Luft- und Raumfahrt - Rohrverbindungen mit losen
Joints en élastomère fluorocarbone et armature en alliage Flanschen und Flachdichtungen - Dichtungen aus
d'aluminium - Spécification technique Fluorcarbon-Elastomer mit Aluminiumarmierung -
Technische Lieferbedingungen
This European Standard was approved by CEN on 11 September 2003.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4054:2004: E
worldwide for CEN national Members.

Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 Quality assurance.5
5 Requirements.6
6 Packaging.9
7 Marking .9
8 Storage.10
Annex A (normative) Ageing and pressurizing tests.11
Annex B (normative) Resistance to fluids .12

Foreword
This document (EN 4054:2004) has been prepared by the European Association of Aerospace
Manufacturers - Standardization (AECMA-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
AECMA, prior to its presentation to CEN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by May 2005, and conflicting national standards shall be withdrawn at
the latest by May 2005.
This document supersedes EN 4054:2003.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and the United Kingdom.
1 Scope
This standard specifies the characteristics, qualification and acceptance requirements for seals for flanged
pipe couplings in fluorocarbon rubber with an armature in aluminium alloy, for aerospace applications.
It is applicable whenever referenced.
2 Normative references
The following referenced documents are indispensable for the application 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 1817, Rubber, vulcanized – Determination of the effect of liquids
ISO 2859-1, Sampling procedures and tables for inspection by attributes – Part 1: Sampling schemes
indexed by acceptance quality limit (AQL) for lot-by-lot inspection
EN 2751, Aerospace series – Storage conditions for rubber products – Requirements for storage,
1)
cleaning and maintenance
2)
EN 2798, Aerospace series – Fluorocarbon rubber (FPM) – Low compression set – Hardness 80 IRHD
EN 3376, Aerospace series – Limits of surface imperfections of elastomeric toroidal sealing rings
2)
(o-rings)
EN 9133, Aerospace series – Quality management systems – Qualification Procedure for Aerospace
2)
Standard Parts
3 Terms and definitions
For the purposes of this standard, the following terms and definitions apply.
3.1
production batch
quantity of finished seals manufactured from the same batch of compound moulded onto the armature. The
product standard of the material defining the armature shall be the same for the compound batch.
3.2
compound
a homogeneous mixture of polymers or polymers with all ingredients required for the finished product

1) In preparation at the date of publication of this standard
2) Published as AECMA Prestandard at the date of publication of this standard
3.3 Surface discontinuites
3.3.1
crack
rupture in the material which may extend in any direction and which may be intercrystalline or transcrystalline
in character
3.3.2
seam
open surface defect
3.4
simple random sampling
the taking of n items from a population of N items in such a way that all possible combinations of n items
have the same probability of being chosen
3.5
sampling plan
a plan according to which one or more samples are taken in order to obtain information and possibly to reach
a decision
3.6
limiting quality (LQ )
in a sampling plan, the quality limit which corresponds to a specified 10 % probability of acceptance
3.7
acceptance quality limit (AQL)
a quality limit which in a sampling plan corresponds to a specified but relatively high probability of
acceptance
It is the maximum per cent defective (or the maximum number of defects per hundred units) that, for
purposes of sampling inspection can be considered satisfactory as a process average.
3.8
definition document
document specifying all the requirements for finished parts
4 Quality assurance
4.1 Qualification
EN 9133
Qualification, inspections and tests shall be carried out on five seals of each size, except for opposed
indication specified in Table 1.
The test programme may possibly be reduced. Any such decision shall be based on the results obtained on
similar types of seals pr
...