SIST EN 6109:2018

SLOVENSKI STANDARD
SIST EN 6109:2018
01-november-2018
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Aerospace series - Static seal elements elastomer, moulded, phosphate ester resistant -
Technical specification
Luft- und Raumfahrt - Statische Dichtungen Elastomer, geformt, beständig gegen
Phosphorsäureester - Technische Lieferbedingungen
Série aérospatiale - Joint d'étanchéité statique élastomère, moulé, résistant à l'ester
phosphorique - Spécification technique
Ta slovenski standard je istoveten z: EN 6109:2018
ICS:
49.080 /HWDOVNLLQYHVROMVNL Aerospace fluid systems and
KLGUDYOLþQLVLVWHPLLQGHOL components
SIST EN 6109:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 6109:2018

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SIST EN 6109:2018


EN 6109
EUROPEAN STANDARD

NORME EUROPÉENNE

August 2018
EUROPÄISCHE NORM
ICS 49.080
English Version

Aerospace series - Static seal elements elastomer,
moulded, phosphate ester resistant - Technical
specification
Série aérospatiale - Joint d'étanchéité statique Luft- und Raumfahrt - Statische Dichtungen Elastomer,
élastomère, moulé, résistant à l'ester phosphorique - geformt, beständig gegen Phosphorsäureester -
Spécification technique Technische Lieferbedingungen
This European Standard was approved by CEN on 19 February 2018.

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 CEN-CENELEC 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
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 6109:2018 E
worldwide for CEN national Members.

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SIST EN 6109:2018
EN 6109:2018 (E)
Contents
Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Requirements . 7
5 Quality assurance . 8
6 Preparation for delivery . 13
7 Storage and storage life . 13
(informative)  Standard evolution form . 16

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SIST EN 6109:2018
EN 6109:2018 (E)
European foreword
This document (EN 6109:2018) has been prepared by the Aerospace and Defence Industries
Association 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 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 February 2019, and conflicting national standards
shall be withdrawn at the latest by February 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
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SIST EN 6109:2018
EN 6109:2018 (E)
1 Scope
This European Standard defines the requirements for moulded elastomer seal elements for use in
hydraulic systems using phosphate ester fluids for aerospace application. It shall be applied in
conjunction with relevant material standards unless otherwise specified on the drawing, order,
inspection schedule or contractual document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
EN 2751, Aerospace series — Storage conditions for rubber products — Requirements for storage,
1)

cleaning and maintenance
1)
EN 3445, Aerospace series — Guidelines for the permissible storage life of rubber products
EN 6075, Aerospace series — Static seal elements O-Ring ethylene-propylene, moulded, phosphate ester
resistant (−55 °C to 107 °C) — Inch series
EN 6076, Aerospace series — Static seal elements O-Ring straight thread tube fitting boss, ethylene-

propylene, moulded, phosphate ester resistant (−55 °C to 107 °C) — Inch series
EN 6102, Aerospace series — Fluid — Hydraulic — Phosphate ester-base — Fire resistant — Technical
1)
specification
EN 9102, Aerospace series — Quality systems — First article inspection
EN 9133, Aerospace series — Quality management systems — Qualification procedure for aerospace
standard parts
EN 10204, Metallic products — Types of inspection documents
ISO 48, Rubber, vulcanized or thermoplastic — Determination of hardness (hardness between 10 IRHD
and 100 IRHD)
ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests
ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
ISO 2781, Rubber, vulcanized or thermoplastic — Determination of density
ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
ISO 3601-3, Fluid power systems — O-rings — Part 3: Quality acceptance criteria
ISO 23529, Rubber — General procedures for preparing and conditioning test pieces for physical test
methods

1) In preparation at the date of publication of this European Standard.
4

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SIST EN 6109:2018
EN 6109:2018 (E)
2)
ASTM D 1414, Standard test methods for rubber O-rings
2)
ASTM D 3677, Standard test methods for rubber — Identification by infrared spectrophotometry
2)
ASTM E 1131, Standard test method for compositional analysis by thermogravimetry
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
acceptance testing
testing performed by the manufacturer to demonstrate that the product supplied is of the same type,
form and quality as that supplied for qualification testing
3.2
batch of rubber compound
batch consisting of one or more rubber compounds of the same clearly specified composition, produced
in one single production run with full trace ability
3.3
capability clause
certain requirements may be assured by the manufacturer on the basis of sufficient statistical test
results, i.e. special testing of the respective characteristic per batch is not mandatory
3.4
First Article Inspection
FAI
first article inspection is used to demonstrate that all definitions are suitable for series production and
ensure that the product complies with the drawings, standards and/or specifications
3.5
Individual Product Specification
IPS
individual information about a certain product of one manufacturer and its specific performance
3.6
Material Standard
MS
List of all requirements/data limits for qualification testing and in general for acceptance testing
3.7
manufacturer
company or organization manufacturing products
3.8
production batch
batch consisting, for the purpose of the present standard, of elastomeric products originating from the
same batch of rubber compound and vulcanized under the same operating conditions at one time by the
manufacturer

2) Published by: ASTM National (US) American Society for Testing and Materials. http://www.astm.org/
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SIST EN 6109:2018
EN 6109:2018 (E)
3.9
purchaser
body which purchases the product from a manufacturer or a supplier in accordance with the
requirements of the user
Note 1 to entry: The purchaser may also be the user.
3.10
qualification
process of demonstrating that the manufacturer and the product supplied are capable of fulfilling the
specified requirements as laid down in the technical specification (TS) and the relevant MS
Note 1 to entry: The proof is given by the qualification testing.
3.11
qualification testing
testing of representative samples manufactured in accordance with the series production requirements,
manufactured with specified raw materials and a frozen process, to demonstrate compliance of the
product with the requirements of the TS and the relevant MS
Note 1 to entry: These results are used to establish the IPS.
3.12
mandated body
body who officially handle the qualification with the manufacturer
3.13
rubber compound
homogenous mix of all the constituents of a rubber formulation, e.g. rubber gumstock, curing agents,
accelerators, fillers
3.14
standard parts
all detail parts as defined by a product standard
3.15
supplier
company or organization supplying products (e.g. stockist)
Note 1 to entry: The supplier may also be the manufacturer.
3.16
Technical Specification
TS
list of all requirements for qualification and acceptance testing including test frequency and test
methods, marking, packing and shipping
3.17
user
body which procures products used to manufacture aircraft components under relevant contractual
responsibilities
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SIST EN 6109:2018
EN 6109:2018 (E)
4 Requirements
4.1 General requirements
4.1.1 Manufacturing schedule
The product shall be manufactured to reproducible quality and shall fulfill the requirements of the
relevant MS, IPS and this TS. The manufacturer shall define the raw materials processes and inspections
in a manufacturing schedule and present this to the mandated body/user upon request on occasion of
qualification or audit. The mandated body/user shall treat any information contained in the schedule as
confidential. Changes of the manufacturing schedule which may adversely affect the quality of the
product must be stated by the manufacturer and shall be subject to written approval of the mandated
body before first delivery. If necessary mandated body may define a re-qualification program prior to
approval. The acceptance test certificate for the first delivery made after the approved changed
manufacturing schedule shall contain a reference to the change.
4.1.2 Trace ability
Each individual product shall be traceable to the pre-materials at all stages of manufacture and delivery.
4.1.3 Freedom of defects
All products shall be free from irregularities not complying with the requirements of the MS, IPS and
4.2.2.6. Further irregularities prejudicial to the subsequent manufacture or use of products shall be the
subject of further investigations with the manufacturer.
4.1.4 Workmanship
The product specified herein shall be processed as required in order to obtain the specified quality.
Any defects attributed to bad workmanship shall be cause for rejection of the specific delivery.
4.1.5 Hazardous constituents
For qualification the product has to fulfill the requirements, defined in the relevant MS.
For release the product has to fulfill the local requirements of the current health and
safety/environmental protection laws of the countries of the purchaser/purchasers.
4.2 Technical requirements
4.2.1 Material
The product shall fulfill the requirements of the relevant MS/or IPS.
4.2.2 Specific
4.2.2.1 Test specimens
For the minimum number of test specimens, see Table 1 and Table 2.
Test specimens for qualification shall be O-Rings according to EN 6075 or EN 6076.
If not specified otherwise in the Table 1, the cross section of the test specimen shall be between
2,62 mm and 3,53 mm (0.103 inch to 0.139 inch) with an optional diameter.
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SIST EN 6109:2018
EN 6109:2018 (E)
For acceptance testing of O-Rings and other seal elements the original parts shall be tested.
4.2.2.2 Conditioning and testing
The conditioning and testing of the test specimens shall comply with ISO 23529 at (23 ± 2) °C
[(72 ± 3.6) °F] and with ambient relative humidity.
The time interval between vulcanization and testing shall comply with ISO 23529.
4.2.2.3 Phosphate ester test fluids
For qualification testing, all phosphate ester hydraulic fluids that meet EN 6102 shall be taken.
4.2.2.4 Dimensions, tolerances and mass
The dimensions, tolerances and mass shall comply with the requirements of the product standards.
4.2.2.5 Marking of parts
Each seal element shall be marked with two (2) white stripes.
4.2.2.6 Surface condition
4.2.2.6.1 Trimming
Mold flash shall be removed from the elastomer parts in such a manner that they conform to the
requirements specified herein and on ap
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