EN 2798:2019
(Main)Aerospace series - Fluorocarbon rubber (FKM) - Low compressions set - Hardness 80 IRHD
Aerospace series - Fluorocarbon rubber (FKM) - Low compressions set - Hardness 80 IRHD
This European Standard specifies the properties of fluorocarbon rubber (FKM) ), low compression set, hardness 80 IRHD, for aerospace applications.
Luft- und Raumfahrt - Fluorcarbon-Elastomer (FKM) - Niedriger Druckverformungsrest - Härte 80 IRHD
Dieses Dokument legt die Eigenschaften von Fluorcarbon-Elastomer (FKM)1, niedriger Druckverformungsrest, Härte 80 IRHD, für Anwendungen in der Luft- und Raumfahrt fest.
Série aérospatiale - Élastomère fluoré (FKM) - Faible déformation rémanente après compression - Dureté 80 DIDC
Le présent document spécifie les propriétés de l’élastomère fluoré (FKM)1), à faible déformation rémanente après compression, de dureté 80 DIDC, pour applications aérospatiales.
Aeronavtika - Fluoroogljikove gume (FKM) - Nizka stopnja kompresije - Trdota 80 IRHD
Ta evropski standard določa lastnosti fluoroogljikove gume (FKM) ), nizke stopnje kompresije, trdote 80 IRHD, za uporabo v aeronavtiki.
General Information
Overview
EN 2798:2019 is a CEN European Standard in the aerospace series that specifies the required properties for fluorocarbon rubber (FKM) formulated for low compression set and hardness 80 IRHD. The standard targets FKM used in aerospace sealing and elastomer applications where resistance to air, hydrocarbon and synthetic oils and fuels at elevated temperatures is critical.
Key topics and technical requirements
- Scope: Defines material properties of FKM (symbol per ISO 1629) with low compression set and 80 IRHD hardness for aerospace use.
- Temperature service range:
- Continuous service: −20 °C to 225 °C
- Intermittent service: −20 °C to 250 °C
- Mechanical and physical requirements (qualification and batch acceptance):
- Hardness: 80 IRHD (batch acceptance test)
- Tensile strength: minimum 11 MPa (batch acceptance)
- Elongation at break: minimum 120% (batch acceptance)
- TR10 (low temperature): ≤ −12 °C
- Compression set: after 70 h at 200 °C ≤ 25% (batch acceptance)
- Density: batch variation limited relative to qualification value (per clause)
- Aging and fluid exposure tests: Specifies tests after exposure to defined test media (per ISO 1817) with conditions such as 70 h at elevated temperatures; permissible changes in mass, tensile strength and elongation are limited (e.g., mass variation and ≤ 20% reduction in tensile/elongation for certain exposures). Hardness change allowances are also specified (±5 IRHD in some conditions).
- Conformity and testing: All tests required for qualification; a subset (marked “∗”) is required for batch acceptance. EN 3207 is referenced for technical specification requirements.
Practical applications
- Seals, O-rings, gaskets and molded elastomer parts in aircraft fuel, hydraulic and engine systems where:
- High temperature resistance and low compression set are required to maintain sealing performance
- Exposure to air, hydrocarbons, synthetic oils and fuels occurs
- Typical users: material engineers, seal designers, aerospace OEMs, procurement/specification staff, quality and acceptance testing laboratories, and elastomer compound formulators.
Who should use this standard
- Aerospace design and systems engineers specifying elastomer components
- Suppliers and manufacturers of FKM compounds and finished seals
- Quality assurance teams performing batch acceptance and qualification testing
- Regulatory and procurement teams ensuring material conformity for aircraft service conditions
Related standards
- EN 3207 - Aerospace series: Rubber compounds - Technical specification
- ISO 1629 - Rubber and latices: Nomenclature
- ISO 1817 - Rubber, vulcanized: Determination of the effect of liquids
Keywords: EN 2798:2019, fluorocarbon rubber, FKM, low compression set, hardness 80 IRHD, aerospace seals, high-temperature elastomer, compression set, TR10, ISO 1817.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2019
Aeronavtika - Fluoroogljikove gume (FKM) - Nizka stopnja kompresije - Trdota 80
IRHD
Aerospace series - Fluorocarbon rubber (FKM) - Low compressions set - Hardness 80
IRHD
Luft- und Raumfahrt - Fluorocarbon-Elastomer (FKM) - Niedriger Druckverformungsrest -
Härte 80 IRDH
Série aérospatiale - Élastomère fluoré (FKM) - Faible déformation rémanente après
compression - Dureté 80 DIDC
Ta slovenski standard je istoveten z: EN 2798:2019
ICS:
49.025.40 Guma in polimerni materiali Rubber and plastics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 2798
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2019
EUROPÄISCHE NORM
ICS 49.025.40
English Version
Aerospace series - Fluorocarbon rubber (FKM) - Low
compressions set - Hardness 80 IRHD
Série aérospatiale - Élastomère fluoré (FKM) - Faible Luft- und Raumfahrt - Fluorocarbon-Elastomer (FKM) -
déformation rémanente après compression - Dureté 80 Niedriger Druckverformungsrest - Härte 80 IRDH
DIDC
This European Standard was approved by CEN on 20 November 2017.
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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 2798:2019 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Application of the material . 5
5 Properties . 5
6 Designation . 7
7 Technical specification . 7
European foreword
This document (EN 2798:2019) 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
identi
...
Frequently Asked Questions
EN 2798:2019 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Fluorocarbon rubber (FKM) - Low compressions set - Hardness 80 IRHD". This standard covers: This European Standard specifies the properties of fluorocarbon rubber (FKM) ), low compression set, hardness 80 IRHD, for aerospace applications.
This European Standard specifies the properties of fluorocarbon rubber (FKM) ), low compression set, hardness 80 IRHD, for aerospace applications.
EN 2798:2019 is classified under the following ICS (International Classification for Standards) categories: 49.025.40 - Rubber and plastics. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase EN 2798:2019 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...