Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Low temperature resistant - Hardness 70 IRHD

This European Standard specifies the properties of acrylonitrile-butadiene rubber (NBR)  ), low temperature resistant, hardness 70 IRHD, for aerospace applications.

Luft- und Raumfahrt - Acrylinitril-Butadien-Elastomer (NBR) - Beständig gegen niedrige Temperaturen - Härte 70 IRHD

Diese Norm legt die Eigenschaften von Acrylnitril-Butadien-Kautschuk (NBR) ), beständig gegen niedrige Temperaturen, Härte 70 IRHD, zur Anwendung in der Luft- und Raumfahrt fest.

Série aérospatiale - Série aérospatiale - Élastomère acrylonitrile butadiène (NBR) - Résistant aux basses températures - Dureté 70 IRHD

La présente Norme européenne spécifie les caractérisiques de l’élastomère acrylonitrile butadiène (NBR)  ), résistant aux basses températures, dureté 70 DIDC, pour les applications aérospatiales.

Aeronavtika - Akrilonitril-butadien kavčuk (NBR) - Odporen proti nizkim temperaturam - Trdota 70 IRHD

General Information

Status
Published
Publication Date
09-Jan-2014
ICS
49.025.40 - Rubber and plastics
Technical Committee
I13 - Imaginarni 13
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
03-Jan-2014
Due Date
10-Mar-2014
Completion Date
10-Jan-2014
Ref Project
EN 3698:2013 - Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Low temperature resistant - Hardness 70 IRHD

Overview

EN 3698:2013 is a European aerospace series standard that specifies the required properties of acrylonitrile-butadiene rubber (NBR), low temperature resistant, with a nominal hardness of 70 IRHD. Approved by CEN, the standard targets materials intended for aerospace applications where combined resistance to petroleum-based fuels and low temperatures is essential.

Key factual points from the standard:

  • Material: Acrylonitrile-butadiene rubber (NBR)
  • Hardness: 70 IRHD
  • Typical use: resistance to petroleum-based fuels and lubricants together with low temperature resistance
  • Service temperature range: continuous −45 °C to 110 °C, intermittent −45 °C to 130 °C
  • Reference normative documents: EN 3207, ISO 1629, ISO 1817

Key Topics

  • Material identification and application: EN 3698 follows ISO 1629 nomenclature and defines the NBR grade for aerospace use.
  • Performance and test requirements: Properties are specified in tables (Table 1 and Table 2) referenced to EN 3207. For qualification all tests listed in the standard are required; for batch acceptance a subset of tests (identified by footnote "a") must be performed.
  • Resistance to media: The standard references ISO 1817 for determination of the effect of liquids (oil/fuel exposure) and specifies permitted variations in mass, volume and mechanical properties after exposure.
  • Low-temperature behaviour: Low-temperature flexibility and crystallization limits are included to ensure performance in cold operating environments.

Applications

EN 3698:2013 is intended for aerospace components where exposure to fuels and lubricants coincides with low ambient or operational temperatures. Practical application examples include elastomer parts used in fuel systems and other aircraft systems that demand:

  • Reliable fuel and lubricant resistance
  • Stable mechanical properties at low temperatures
  • Consistent production batch acceptance and traceability for safety-critical parts

The suitability of the material for a specific component should be verified by complementary tests on finished parts, since the standard properties are obtained from standard test specimens.

Related Standards

  • EN 3207 - Aerospace series - Rubber compounds - Technical specification (see for test methods and technical specification)
  • ISO 1629 - Rubber and latices - Nomenclature (material designation)
  • ISO 1817 - Rubber, vulcanized - Determination of the effect of liquids (oil/fuel exposure)

For manufacturers and procurement teams, EN 3698 provides a clear specification backbone for selecting and qualifying low-temperature resistant NBR (70 IRHD) materials in aerospace programmes, ensuring compatibility with fuel/lubricant environments and defined service temperature limits.

Frequently Asked Questions

SIST EN 3698:2014 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Low temperature resistant - Hardness 70 IRHD". This standard covers: This European Standard specifies the properties of acrylonitrile-butadiene rubber (NBR) ), low temperature resistant, hardness 70 IRHD, for aerospace applications.

This European Standard specifies the properties of acrylonitrile-butadiene rubber (NBR) ), low temperature resistant, hardness 70 IRHD, for aerospace applications.

SIST EN 3698:2014 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.

You can purchase SIST EN 3698:2014 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)


SLOVENSKI STANDARD
01-februar-2014
$HURQDYWLND$NULORQLWULOEXWDGLHQNDYþXN 1%5 2GSRUHQSURWLQL]NLP
WHPSHUDWXUDP7UGRWD,5+'
Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Low temperature resistant -
Hardness 70 IRHD
Luft- und Raumfahrt - Acrylinitril-Butadien-Elastomer (NBR) - Beständig gegen niedrige
Temperaturen - Härte 70 IRHD
Série aérospatiale - Série aérospatiale - Élastomère acrylonitrile butadiène (NBR) -
Résistant aux basses températures - Dureté 70 IRHD
Ta slovenski standard je istoveten z: EN 3698:2013
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.

EUROPEAN STANDARD
EN 3698
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2013
ICS 49.025.40
English Version
Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Low
temperature resistant - Hardness 70 IRHD
Série aérospatiale - Série aérospatiale - Élastomère Luft- und Raumfahrt - Acrylinitril-Butadien-Elastomer (NBR)
acrylonitrile butadiène (NBR) - Résistant aux basses - Beständig gegen niedrige Temperaturen - Härte 70 IRHD
températures - Dureté 70 IRHD
This European Standard was approved by CEN on 27 October 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 Ref. No. EN 3698:2013: E
worldwide for CEN national Members.

Contents Page
Foreword . 3
1 Scope . 4
2 Normative references . 4
3 Application of the material . 4
3.1 General . 4
3.2 Typical use . 4
3.3 Temperature range . 4
4 Properties . 4
5 Designation . 6
6 Technical specification . 6

Foreword
This document (EN 3698:2013) 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 A
...

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...