SIST EN 2844:2014
(Main)Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Mineral oil resistant - Hardness 90 IRHD
Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Mineral oil resistant - Hardness 90 IRHD
This European Standard specifies the properties of acrylonitrile-butadiene rubber (NBR) ), mineral oil resistant, hardness 90 IRHD, for aerospace applications.
Luft- und Raumfahrt - Mineralölresistente acrylonitrile-butadiene Elastomere (NBR) - Härte 90 - Eigenschaften
Diese Norm legt die Eigenschaften von Acrylnitril-Butadien-Kautschuk (NBR) ), beständig gegen Mineralöle, Härte 90 IRHD, zur Anwendung in der Luft- und Raumfahrt fest.
Caoutchouc acrylonitrile-butadiène résistant à l'huile minérale (NBR) - Degré de dureté 90 - Caractéristiques
La présente Norme européenne spécifie les caractéristiques de l’élastomère acrylonitrile butadiène (NBR) 1),
résistant aux huiles minérales, dureté 90 DIDC, pour les applications aérospatiales.
Aeronavtika - Akrilonitril-butadien kavčuk (NBR) - Odporen proti mineralnim oljem - Trdota 90 IRHD
General Information
Overview
SIST EN 2844:2014 is a European standard published by CEN that specifies the material properties of acrylonitrile-butadiene rubber (NBR) with mineral oil resistance and a hardness of 90 IRHD, tailored specifically for aerospace applications. Developed under the Aerospace and Defence Industries Association of Europe (ASD-STAN), this standard ensures consistent quality and performance of NBR rubber compounds used in aerospace hydraulic systems and lubrication components exposed to petroleum-based fluids. It defines critical mechanical, chemical, and thermal characteristics to guarantee safety and reliability in demanding aerospace environments.
Key Topics
- Material Specification: Defines acrylonitrile-butadiene rubber (NBR) composition optimized for mineral oil resistance with a fixed hardness of 90 IRHD.
- Test Methods and Properties: Prescribes rigorous testing protocols aligned with EN 3207 and ISO 1817, covering hardness, tensile strength, elongation, density, low temperature resistance, compression set, ozone resistance, and corrosion behavior on metals.
- Operating Conditions: Specifies continuous service temperature range from -40 °C to 120 °C, and intermittent exposure up to 150 °C, suitable for aerospace hydraulic and lubricant environments.
- Resistance Requirements: Details volume, mass, tensile strength, elongation, and hardness variations after immerse testing in mineral oil at elevated temperature to simulate real operational stresses.
- Batch Testing and Qualification: Outlines mandatory tests for batch acceptance and full qualification, ensuring consistent material performance across manufacture lots.
Applications
SIST EN 2844:2014 NBR elastomers are primarily designed for aerospace use where durable, mineral oil resistant seals, gaskets, and components are critical. Typical applications include:
- Hydraulic fluid sealing systems in aircraft and spacecraft.
- Lubricant exposure components requiring stable mechanical properties under temperature cycling.
- Elastomer parts in fuel and oil systems where petroleum-based fluids are prevalent.
- High-performance seals for aerospace actuators, valves, and fittings exposed to mineral oils.
- Components requiring stable hardness of 90 IRHD to maintain form and function in dynamic aerospace assemblies.
The standard’s properties assure long lifespan, resistance to degradation from mineral oils, and mechanical integrity in extreme aerospace temperature and ozone conditions.
Related Standards
- EN 3207: Aerospace series - Rubber compounds - Technical specification; defines testing methodologies used in EN 2844.
- ISO 1817: Rubber, vulcanized or thermoplastic - Determination of the effect of liquids; provides the solvent immersion testing procedures referenced.
- ISO 1629: Rubber and latices - Nomenclature; supplies the designation and identification system for rubber types including NBR.
- Additional CEN and ASD-STAN aerospace standards complementing material specifications, performance tests, and aerospace component qualifications ensure an integrated framework for rubber product development and approval.
By complying with SIST EN 2844:2014, manufacturers and aerospace engineers can guarantee high quality, mineral oil resistant NBR rubber components that meet the rigorous demands of the aerospace industry, supporting safety, reliability, and extended operational life of critical systems.
Frequently Asked Questions
SIST EN 2844:2014 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Mineral oil resistant - Hardness 90 IRHD". This standard covers: This European Standard specifies the properties of acrylonitrile-butadiene rubber (NBR) ), mineral oil resistant, hardness 90 IRHD, for aerospace applications.
This European Standard specifies the properties of acrylonitrile-butadiene rubber (NBR) ), mineral oil resistant, hardness 90 IRHD, for aerospace applications.
SIST EN 2844:2014 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.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Mineralölresistente acrylonitrile-butadiene Elastomere (NBR) - Härte 90 - EigenschaftenCaoutchouc acrylonitrile-butadiène résistant à l'huile minérale (NBR) - Degré de dureté 90 - CaractéristiquesAerospace series - Acrylonitrile-butadiene rubber (NBR) - Mineral oil resistant - Hardness 90 IRHD49.025.40Guma in polimerni materialiRubber and plasticsICS:Ta slovenski standard je istoveten z:EN 2844:2013SIST EN 2844:2014en01-februar-2014SIST EN 2844:2014SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 2844
February 2013 ICS 49.025.40 English Version
Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Mineral oil resistant - Hardness 90 IRHD
Caoutchouc acrylonitrile-butadiène résistant à l'huile minérale (NBR) - Degré de dureté 90 - Caractéristiques
Luft- und Raumfahrt - Mineralölresistente Acrylnitril-Butadien Elastomer (NBR) - Härte 90 IRHD This European Standard was approved by CEN on 3 November 2012.
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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2844:2013: ESIST EN 2844:2014
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