Aerospace series - Fluorocarbon rubber (FKM) - Low compressions set - Hardness 60 IRHD

This European Standard specifies the properties of fluorocarbon rubber (FKM) 1), low compression set, hardness 60 IRHD, for aerospace applications.
1) Symbol as per ISO 1629.

Luft- und Raumfahrt - Fluorocarbon-Elastomer (FKM) - Niedriger Druckverformungsrest - Härte 60 IRDH

Série aérospatiale - Élastomère fluoré (FKM) - Faible déformation rémanente après compression - Dureté 60 DIDC

Aeronavtika - Fluoroogljikove gume (FKM) - Nizka stopnja kompresije - Trdota 60 IRHD

Ta evropski standard določa lastnosti flluoroogljikove gume (FKM)1), nizke stopnje kompresije, trdote 60 IRHD, za uporabo v aeronavtiki.

General Information

Status
Published
Publication Date
05-Sep-2018
ICS
49.025.40 - Rubber and plastics
Technical Committee
I13 - Imaginarni 13
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
10-Aug-2018
Due Date
15-Oct-2018
Completion Date
06-Sep-2018
Ref Project
EN 2796:2018 - Aerospace series - Fluorocarbon rubber (FKM) - Low compressions set - Hardness 60 IRHD

Overview

EN 2796:2018 is a European aerospace standard that specifies the required properties of fluorocarbon rubber (FKM) with low compression set and a nominal hardness of 60 IRHD for aerospace applications. The standard defines mechanical, thermal and chemical resistance characteristics, batch acceptance criteria and test methods to ensure FKM materials meet performance expectations for demanding aviation and space environments.

Key topics and technical requirements

  • Material and designation: Covers FKM as defined by ISO 1629 nomenclature (symbol as per ISO 1629).
  • Hardness: Specified nominal hardness of 60 IRHD for the material grade.
  • Mechanical properties: Includes minimum tensile strength and elongation requirements (tensile strength ≥ 10 MPa and elongation at break ≥ 180% are specified for qualification and batch acceptance).
  • Compression set: Low compression set requirement; for example, a maximum compression set after 70 h at 200 °C is specified (see standard for exact test conditions and limits).
  • Temperature capability: Intended for elevated-temperature service with continuous use up to 225 °C and intermittent use up to 250 °C.
  • Low-temperature behavior: TR10 (low-temperature embrittlement) is included as a required property.
  • Chemical resistance: Resistance to air, hydrocarbon and synthetic oils and fuels at elevated temperature is a principal expectation.
  • Batch acceptance and tolerances: Density and hardness tolerances and which tests are required for batch acceptance versus full qualification are defined (e.g., density variation limits relative to qualification).
  • Referenced test standards: Uses EN 3207 (rubber compounds technical specification) and ISO 1817 (effect of liquids) among others for test methods.

Applications

EN 2796:2018 is intended for FKM elastomer components used where oil, fuel and high-temperature resistance and low compression set are critical. Typical applications include:

  • Aerospace seals, O-rings and gaskets in fuel, hydraulic and engine systems
  • Static and dynamic sealing elements exposed to hydrocarbons and elevated temperatures
  • Flight-critical elastic components requiring stable sealing performance over thermal cycles

Who should use this standard

  • Materials engineers and specifiers selecting FKM grades for aerospace programs
  • Aerospace OEMs and suppliers producing seals, gaskets and molded elastomer parts
  • Procurement and quality departments verifying batch acceptance and supplier compliance
  • Test laboratories performing qualification and batch tests

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 2796:2018, fluorocarbon rubber FKM, low compression set, hardness 60 IRHD, aerospace seals, FKM 60 IRHD, aerospace elastomer standard.

Frequently Asked Questions

SIST EN 2796:2018 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Fluorocarbon rubber (FKM) - Low compressions set - Hardness 60 IRHD". This standard covers: This European Standard specifies the properties of fluorocarbon rubber (FKM) 1), low compression set, hardness 60 IRHD, for aerospace applications. 1) Symbol as per ISO 1629.

This European Standard specifies the properties of fluorocarbon rubber (FKM) 1), low compression set, hardness 60 IRHD, for aerospace applications. 1) Symbol as per ISO 1629.

SIST EN 2796:2018 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 SIST EN 2796:2018 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 SIST standards.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aeronavtika - Fluoroogljikove gume (FKM) - Nizka stopnja kompresije - Trdota 60 IRHDLuft- und Raumfahrt - Fluorocarbon-Elastomer (FKM) - Niedriger Druckverformungsrest - Härte 60 IRDHSérie aérospatiale - Élastomère fluoré (FKM) - Faible déformation rémanente après compression - Dureté 60 DIDCAerospace series - Fluorocarbon rubber (FKM) - Low compressions set - Hardness 60 IRHD49.025.40Guma in polimerni materialiRubber and plasticsICS:Ta slovenski standard je istoveten z:EN 2796:2018SIST EN 2796:2018en,fr,de01-oktober-2018SIST EN 2796:2018SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 2796
August
t r s z ICS
v {ä r t wä v r English Version
compressions set æ Hardness
x r IRHD déformation rémanente après compression æ Dureté
x r DIDC Niedriger Druckverformungsrest æ Härte
x r IRDH This European Standard was approved by CEN on
t r November
t r s yä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
t y { xã t r s z ESIST EN 2796:2018
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