EN 4708-103:2019

Aerospace series - Sleeving, heat-shrinkable, for binding, insulation and identification - Part 103: Fluoroelastomer sleeves - Operating temperature -55 °C to 200 °C - Product standard

This European Standard specifies the required characteristics for two types a heat-shrinkable, fluoroelastomer sleeving for use in aircraft electrical systems at operating temperatures between -55 °C and 200 °C.
Type A      Thick wall
Type B      Thin wall
This sleeving has good flexibility, is flame retarded and has a thick wall for mechanical protection. It is for use in areas subject to prolonged contamination by aircraft fuel and fluids with the exception of phosphate ester-based hydraulic fluids. The standard colour is black.
These sleevings are normally supplied with internal diameters up to 50 mm for shrink ratios of 2:1. They are available in black only.
Sizes other than those specifically listed in this standard may be available. These items shall be considered to comply with this standard if they comply with the property requirements listed in Tables 2, 3 and 4 except for dimensions and mass.

Luft- und Raumfahrt - Wärmeschrumpfender Schlauch zur Befestigung, Isolierung und Identifizierung - Teil 103: Fluorelastomerschlauch - Temperaturbereich -55 °C bis 200 °C - Produktnorm

Dieses Dokument legt die Anforderungen für zwei Typen von wärmeschrumpfenden Fluorelastomerschläu-chen zur Verwendung in elektrischen Bordnetzen von Luftfahrzeugen bei Betriebstemperaturen zwischen -55 °C und 200 °C fest.
Typ A dicke Wand
Typ B dünne Wand
Dieser Schlauch hat eine gute Flexibilität, ist flammgehemmt und verfügt über eine dicke Wand für mechani-schen Schutz. Er wird in Bereichen mit anhaltender Verschmutzung durch Luftfahrzeug-Benzin und –Flüs-sigkeiten verwendet, mit Ausnahme von Hydraulikflüssigkeiten auf Phosphatester-Basis. Die Standardfarbe ist schwarz.
Diese Schläuche werden üblicherweise für Schrumpfverhältnisse von 2 : 1 mit Innendurchmessern bis zu 50 mm geliefert. Sie werden nur in schwarz angeboten.
Es dürfen andere Größen als die speziell in dieser Norm angegebenen angeboten werden. Für diese Bauteile muss davon ausgegangen werden, dass sie diese Norm erfüllen, wenn sie mit Ausnahme der Maße und Masse die in Tabelle 2, Tabelle 3 und Tabelle 4 angegebenen Anforderungen an die Merkmale erfüllen.

Série aérospatiale - Manchons thermorétractables, de jonction, isolement et identification - Partie 103: Gaines à base de fluoroélastomère - Températures d'utilisation -55 °C à 200 °C - Norme de produit

La présente Norme européenne spécifie les caractéristiques requises pour deux types de gaine thermorétractable à base de fluoroélastomère destinés à être utilisés dans les systèmes électriques des aéronefs à des températures comprises entre  55 °C et 200 °C.
Type A      Paroi épaisse
Type B      Paroi fine
Cette gaine possède une bonne flexibilité, une paroi épaisse pour la protection mécanique, et est ignifugée. Elle est destinée à une utilisation dans des zones soumises à une contamination prolongée par du carburant aéronautique et des fluides à l’exception des fluides hydrauliques à base d’ester phosphorique. La couleur usuelle est noire.
Ces gaines sont normalement fournies avec des diamètres internes allant jusqu’à 50 mm pour les coefficients de rétreint 2:1. Elles sont uniquement disponibles en noir.
D’autres tailles que celle listées spécifiquement dans la présente norme sont potentiellement disponibles. Ces articles doivent être considérés comme conformes à la présente norme s’ils se conforment aux exigences de propriétés listées dans les Tableaux 2, 3 et 4, à l’exception des dimensions et masses.

Aeronavtika - Toplotno skrčljiva cev za utrjevanje, izolacijo in identifikacijo - 103. del: Fluoroelastomerne cevi - Delovna temperatura –55 °C do 200 °C - Standard za proizvod

Ta evropski standard določa zahtevane lastnosti za dve vrsti toplotno skrčljivih fluoroelastomernih cevi za uporabo v električnih sistemih letal pri obratovalnih temperaturah med −55 °C in 200 °C.
Tip A      Debela stena
Tip B      Tanka stena
Ta cev je prožna, ognjeodporna in ima debelo steno za mehansko zaščito. Namenjena je uporabi v območjih, ki so daljši čas izpostavljena letalskemu gorivu in tekočinam, z izjemo hidravličnih tekočin na osnovi fosfatnih estrov. Standardna barva je črna.
Te cevi so običajno dobavljive z notranjimi premeri do 50 mm za razmerja krčenja 2:1. Na voljo so samo v črni barvi.
Lahko so na voljo tudi v velikostih, ki niso posebej navedene v tem standardu. Upoštevati je treba, da se te postavke skladajo s tem standardom, če so skladne z zahtevami za lastnosti, navedenimi v preglednicah 2, 3 in 4, razen z zahtevami za mere in maso.

General Information

• Status: Published
• Publication Date: 28-May-2019
• Withdrawal Date: 29-Nov-2019
• ICS: 47.060 - Inland navigation vessels
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 2/S 8 - Installation Technologies
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 29-May-2019
• Completion Date: 29-May-2019
• Ref Project: SIST EN 4708-103:2019 - Aerospace series - Sleeving, heat-shrinkable, for binding, insulation and identification - Part 103: Fluoroelastomer sleeves - Operating temperature -55 °C to 200 °C - Product standard

Overview

EN 4708-103:2019 is a European Standard developed by CEN that specifies the requirements for heat-shrinkable fluoroelastomer sleeving used in aerospace electrical systems. Designed for operating temperatures ranging from -55 °C to 200 °C, this standard defines two types of sleeving, Type A (thick wall) and Type B (thin wall), providing excellent flexibility, flame retardancy, and mechanical protection. It ensures compatibility with aircraft fuel and fluid exposure, except phosphate ester-based hydraulic fluids, making it essential for aerospace electrical insulation, binding, and identification applications.

Key Topics

• Types of Sleeving

  • Type A: Thick wall sleeving, offering robust mechanical protection for harsh aerospace environments.
  • Type B: Thin wall sleeving, suitable for applications requiring flexibility with lighter wall thickness.

• Material and Performance Characteristics

  • Made from high-performance fluoroelastomers with excellent heat resistance.
  • Flame-retardant properties ensure safety in aircraft systems.
  • Resistant to contamination by various aircraft fuels and fluids (except phosphate ester-based hydraulic fluids).
  • Supplied in standard black color with internal diameters up to 50 mm and shrink ratios of 2:1.
  • Compliance includes rigorous mechanical and electrical tests like tensile strength, elongation, breakdown voltage, and resistance to fluids.

• Testing and Quality Assurance

  • Sleeving is tested for dimensional stability, heat shock resistance at 300 °C, low-temperature bending, copper corrosion, and electrical breakdown voltage.
  • Includes resistance to selected aviation fluids such as gasoline, kerosene, hydraulic fluids, solvents, de-icers, and coolants as per EN 3909 and ISO 1817.
  • Quality management adheres to EN 4708-001 specifications ensuring consistent product performance.

Applications

EN 4708-103 fluoroelastomer heat-shrinkable sleeving is primarily utilized in aircraft electrical systems where thermal stability, mechanical protection, and chemical resistance are critical. Typical applications include:

• Electrical insulation for wiring and cable harnesses in aerospace environments.
• Binding and securing cables to prevent abrasion and damage during operation.
• Identification of wiring systems through color coding (standard black per this standard, with color designation per IEC 60757 if applicable).
• Protection in areas exposed to aircraft fuel contamination, such as engine bays or fuel system components, except where phosphate ester-based hydraulic fluids are present.
• Use in both commercial and military aerospace platforms, ensuring compliance with stringent safety and durability standards.

Related Standards

• EN 4708-001: Aerospace series - Heat-shrinkable sleeving technical specifications and quality assurance guidelines referenced by EN 4708-103.
• EN 3909: Test fluids and methods for aerospace electrical components, key for fluid resistance testing.
• IEC 60684-1 and IEC 60684-2: Definitions, general requirements, and test methods for flexible insulating sleeving.
• IEC 60757: Color designation code relevant for sleeving color identification.
• EN ISO 846: Plastics evaluation for microorganism resistance, applicable for ensuring durability.
• ISO 1817: Standard for testing chemical resistance of rubber materials, important for validation of fluid resistance in aerospace applications.

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Keywords: aerospace sleeving, heat-shrinkable fluoroelastomer, aircraft electrical insulation, mechanical protection, flame retardant sleeving, aerospace electrical systems, heat resistance, fluid resistant sleeving, CEN EN 4708-103, aviation cable protection, aerospace standards.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2019
Aeronavtika - Toplotno skrčljiva cev za utrjevanje, izolacijo in identifikacijo - 103.
del: Fluoroelastomerne cevi - Delovna temperatura –55 °C do 200 °C - Standard za
proizvod
Aerospace series - Sleeving, heat-shrinkable, for binding, insulation and identification -
Part 103: Fluoroelastomer sleeves - Operating temperature -55 °C to 200 °C - Product
standard
Luft- und Raumfahrt - Wärmeschrumpfender Schlauch zur Befestigung, Isolierung und
Identifizierung - Teil 103: Fluorpolymer Schlauch - Temperaturbereich -55 °C und 200 °C
- Produktnorm
Série aérospatiale - Manchons thermorétractables, de jonction, isolement et identification
- Partie 103: Gaines à base de fluoroélastomère - Températures d'utilisation -55 °C à
200 °C - Norme de produit
Ta slovenski standard je istoveten z: EN 4708-103:2019
ICS:
49.025.40 Guma in polimerni materiali Rubber and plastics
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4708-103
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2019
EUROPÄISCHE NORM
ICS 49.060
English Version
Aerospace series - Sleeving, heat-shrinkable, for binding,
insulation and identification - Part 103: Fluoroelastomer
sleeves - Operating temperature -55 °C to 200 °C - Product
standard
Série aérospatiale - Manchons thermorétractables, de Luft- und Raumfahrt - Wärmeschrumpfender Schlauch
jonction, isolement et identification - Partie 103: zur Befestigung, Isolierung und Identifizierung - Teil
Gaines à base de fluoroélastomère - Températures 103: Fluorpolymer Schlauch - Temperaturbereich -55
d'utilisation -55 °C à 200 °C - Norme de produit °C und 200 °C - Produktnorm
This European Standard was approved by CEN on 6 August 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4708-103:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Required characteristics . 5
5 Quality assurance . 12
6 Designation . 12
7 Labelling and packaging . 12
8 Technical specification . 12

European foreword
This document (EN 4708-103:2019) 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
identical text or by endorsement, at the latest by November 2019, and conflicting national standards shall
be withdrawn at the latest by November 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.
1 Scope
This document specifies the required characteristics for two types a heat-shrinkable, fluoroelastomer
sleeving for use in aircraft electrical systems at operating temperatures between -55 °C and 200 °C.
Type A Thick wall
Type B Thin wall
This sleeving has good flexibility, is flame retarded and has a thick wall for mechanical protection. It is
for use in areas subject to prolonged contamination by aircraft fuel and fluids with the exception of
phosphate ester-based hydraulic fluids. The standard colour is black.
These sleevings are normally supplied with internal diameters up to 50 mm for shrink ratios of 2:1.
They are available in black only.
Sizes other than those specifically listed in this standard may be available. These items shall be
considered to comply with this standard if they comply with the property requirements listed in Tables
2, 3 and 4 except for dimensions and mass.
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 3909, Aerospace series — Test fluids and test methods for electrical and optical components and
sub-assemblies
EN 4708-001, Aerospace series — Sleeving, heat-shrinkable, for binding, insulation and identification —
Part 001: Technical specification
1)
EN ISO 846, Plastics — Evaluation of the action of microorganisms
1)
EN ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
2)
IEC 60684-1, Flexible insulating sleeving — Part 1: Definitions and general requirements
2)
IEC 60684-2, Flexible insulating sleeving — Part 2: Methods of test
2)
IEC 60757, Code for designation of colours

1) Published by: International Organization for Standardization (ISO), http://www.iso.org/

2) Published by: International Electrotechnical Commission (IEC), http://www.iec.ch/
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60684-1 apply
...