Aerospace series - Sleeving, heat-shrinkable, for binding, insulation and identification - Part 301: Adhesive lined polyolefin sleevings - Operating temperature - 55 °C to 105 °C - Product Standard

This document specifies the required characteristics for heat-shrinkable adhesive lined polyolefin sleevings for use in aircraft electrical systems at operating temperatures between - 55 °C and 105 °C.
The sleeving consists of an outer layer being of a flexible cross-linked polyolefin. The inner wall consists of a hot melt adhesive that flows and fuses during the shrinking process to provide a bond that is suitable where an environmental seal is required.
These sleevings are normally supplied with internal diameters up to 40 mm for shrink ratios of 3:1 and up to 52 mm for shrink ratios of 4:1.
These sleevings are normally supplied in colour black.
Sizes or colours other than those specifically listed in this standard may be available as custom items. These items shall be considered to comply with this standard if they comply with the property requirements listed in Table 3 and Table 5 except for dimensions and mass.

Luft- und Raumfahrt - Wärmeschrumpfender Schlauch zur Befestigung, Isolierung und Identifizierung - Teil 301: Kleberbeschichteter Polyolefin-Schlauch - Betriebstemperatur –55 °C bis 105 °C - Produktnorm

Diese Europäische Norm legt die erforderlichen Eigenschaften von wärmeschrumpfenden, mit Klebstoff auf der Innenseite beschichteten Schläuchen aus Polyolefin zur Verwendung in elektrischen Bordnetzen von Luftfahrzeugen bei Betriebstemperaturen zwischen −55 °C und 105 °C fest.
Die Schläuche bestehen aus einer Außenlage aus flexiblem und vernetztem Polyolefin. Die Innenwand be-steht aus bei Hitze schmelzendem Klebstoff, der während des Schrumpfungsprozesses fließt und ver-schmilzt, sodass eine Bindung entsteht, die für Stellen geeignet ist, an denen eine Abdichtung gegenüber der Umwelt notwendig ist.
Diese Schläuche werden üblicherweise mit Innendurchmessern von bis zu 40 mm bei Schrumpfverhältnis-sen von 3:1 und bis zu 52 mm bei Schrumpfverhältnissen von 4:1 geliefert.
Diese Schläuche werden üblicherweise in der Farbe schwarz geliefert.
Andere Größen oder Farben als diejenigen, die in dieser Norm angeführt sind, können ebenfalls als benutzer¬definierte Varianten verfügbar sein. Diese Schläuche müssen als dieser Norm entsprechend anerkannt werden, wenn sie den in Tabelle 3 und Tabelle 5 aufgeführten Eigenschaftsanforderungen mit Ausnahme der Maße und Massen entsprechen.

Série aérospatiale - Manchons thermorétractables, de jonction, isolement et identification - Partie 301 : Gaine en polyoléfine avec revêtement d’un adhésif - Températures d'utilisation – 55 °C à 105 °C - Norme de produit

La présente Norme européenne spécifie les caractéristiques requises pour les gaines thermorétractables en polyoléfine avec revêtement d’un adhésif destinées à être utilisées dans les systèmes électriques des aéronefs à des températures comprises entre - 55 °C et 105 °C.
La gaine est constituée d’une couche extérieure en polyoléfine flexible réticulée. La paroi intérieure est constituée d’un adhésif thermofusible qui coule, fond et colle pendant le processus de rétractation pour fournir un collage approprié si un joint environnemental est requis.
Ces gaines sont normalement fournies avec des diamètres internes allant jusqu’à 40 mm pour les coefficients de rétreint 3:1 et jusqu’à 52 mm pour les coefficients de rétreint 4:1.
Ces gaines sont normalement fournies en couleur noire.
D’autres tailles ou d’autres couleurs que celles listées spécifiquement dans la présente norme sont potentiellement disponibles comme articles personnalisables. Ces articles doivent être considérés comme conformes à la présente norme s’ils satisfont les exigences de propriétés listées dans les Tableaux 3 et 5, à l’exception des dimensions et masses.

Aeronavtika - Toplotno skrčljiva cev za utrjevanje, izolacijo in identifikacijo - 301. del: Z lepilom obložene poliolefinske cevi - Delovna temperatura –55 °C do 105 °C - Standard za proizvod

Ta dokument določa zahtevane značilnosti toplotno skrčljivih poliolefinskih cevi za uporabo v električnih sistemih v letalih pri obratovalni temperaturi med –55 in 105 °C. Zunanja plast cevi je izdelana iz prožnega zamreženega poliolefina. Notranja stena je sestavljena iz termoplastičnega lepila, ki se med procesi krčenja pretaka in topi, s čimer ustvarja primerno sprijemljivost, kadar je potrebna zaščita pred okoljskimi vplivi.
Te cevi so običajno dobavljive z notranjimi premeri do 40 mm za razmerja krčenja 3:1 in do 52 mm za razmerja krčenja 4:1.
Te cevi so običajno dobavljive v črni barvi.
Druge velikosti ali barve od navedenih v tem standardu so lahko na voljo kot postavke po meri. Upoštevati je treba, da se te postavke skladajo s tem standardom, če so skladne z zahtevami za lastnosti, navedenimi v tabeli 3 in 5, razen z zahtevami za mere in težo.

General Information

Status
Published
Publication Date
15-May-2018
Withdrawal Date
29-Nov-2018
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
16-May-2018
Completion Date
16-May-2018
Ref Project
SIST EN 4708-301:2018 - Aerospace series - Sleeving, heat-shrinkable, for binding, insulation and identification - Part 301: Adhesive lined polyolefin sleevings - Operating temperature - 55 °C to 105 °C - Product Standard

Overview

EN 4708-301:2018 is a European standard developed by CEN for heat-shrinkable adhesive lined polyolefin sleevings specifically designed for aerospace electrical systems. It defines the essential characteristics, performance requirements, and testing methods for these sleevings, which operate effectively within the temperature range of -55 °C to 105 °C. The sleeving features an outer layer of flexible cross-linked polyolefin and an inner hot melt adhesive that activates during shrinking to ensure a reliable environmental seal. This standard is crucial for ensuring safety, durability, and consistency in aircraft wiring insulation, binding, and identification.

Key Topics

  • Material Composition: The sleeving consists of a cross-linked polyolefin outer layer with a hot melt adhesive inner lining, providing strong bonding and environmental sealing during application.

  • Operating Temperature: Suitable for use in harsh aerospace environments, capable of withstanding temperatures from -55 °C to 105 °C.

  • Dimensions and Shrink Ratios:

    • Available in internal diameters up to 40 mm with a 3:1 shrink ratio.
    • Sizes up to 52 mm internal diameter with a 4:1 shrink ratio are also specified.
    • Standard color is black, with custom sizes and colors available that can meet the standard’s property requirements.

  • Performance Testing: Includes rigorous testing for:

    • Dimensional stability and mass
    • Heat shock resistance
    • Tensile strength and elongation
    • Electrical breakdown voltage and volume resistivity
    • Resistance to fluids such as fuels, hydraulic oils, cleaning solvents, and de-icing fluids
    • Low temperature bend tests and heat ageing
    • Fungus resistance and color fastness to light

  • Test Methods and Specifications: The standard references IEC 60684-1 & IEC 60684-2 for definitions and test methods, along with aerospace-specific fluid and environmental resistance tests (EN 3909, EN 6059-304).

Applications

EN 4708-301:2018 heat-shrinkable adhesive lined polyolefin sleevings are primarily used in aerospace electrical systems for:

  • Wire Bundling and Insulation: Protecting and insulating aircraft wiring harnesses against mechanical stress, abrasion, and environmental factors.

  • Environmental Sealing: Ensuring hermetic seals around splices and connectors for moisture, dust, and chemical resistance.

  • Identification and Marking: Color consistency and durability assist in wire identification, aiding maintenance and safety compliance.

  • Temperature Resilience: Operating reliably across wide temperature ranges encountered in avionics and aircraft engine compartments.

This standard guarantees that sleevings meet stringent aerospace quality demands, ensuring electrical integrity, safety, and longevity of critical aircraft components.

Related Standards

  • EN 4708-001: Provides the overarching technical specifications and designations for heat-shrinkable sleeving in aerospace applications.

  • IEC 60684 Series: Defines generic requirements, definitions, and test methods for flexible insulating sleeving.

  • EN 6059-304: Specifies flammability test methods relevant to aerospace cable protection sleeving.

  • EN 3909: Covers test fluids used for aerospace electrical and optical components, critical for fluid resistance testing.

  • ISO 846: Addresses evaluation for microbial resistance, relevant for fungus resistance tests in the sleeving.

  • Military and Industry Standards: MIL-PRF-87937 and SAE AMS series provide additional cleaning and maintenance product specs that interact with these materials.

Keywords: EN 4708-301:2018, aerospace sleeving, heat-shrinkable polyolefin, adhesive lined sleeving, aircraft electrical insulation, environmental seal, cross-linked polyolefin, aerospace wire protection, heat-shrink tubing aerospace, electrical system insulation, aircraft wiring harnesses, aerospace standards CEN.

Frequently Asked Questions

EN 4708-301:2018 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Sleeving, heat-shrinkable, for binding, insulation and identification - Part 301: Adhesive lined polyolefin sleevings - Operating temperature - 55 °C to 105 °C - Product Standard". This standard covers: This document specifies the required characteristics for heat-shrinkable adhesive lined polyolefin sleevings for use in aircraft electrical systems at operating temperatures between - 55 °C and 105 °C. The sleeving consists of an outer layer being of a flexible cross-linked polyolefin. The inner wall consists of a hot melt adhesive that flows and fuses during the shrinking process to provide a bond that is suitable where an environmental seal is required. These sleevings are normally supplied with internal diameters up to 40 mm for shrink ratios of 3:1 and up to 52 mm for shrink ratios of 4:1. These sleevings are normally supplied in colour black. Sizes or colours other than those specifically listed in this standard may be available as custom items. These items shall be considered to comply with this standard if they comply with the property requirements listed in Table 3 and Table 5 except for dimensions and mass.

This document specifies the required characteristics for heat-shrinkable adhesive lined polyolefin sleevings for use in aircraft electrical systems at operating temperatures between - 55 °C and 105 °C. The sleeving consists of an outer layer being of a flexible cross-linked polyolefin. The inner wall consists of a hot melt adhesive that flows and fuses during the shrinking process to provide a bond that is suitable where an environmental seal is required. These sleevings are normally supplied with internal diameters up to 40 mm for shrink ratios of 3:1 and up to 52 mm for shrink ratios of 4:1. These sleevings are normally supplied in colour black. Sizes or colours other than those specifically listed in this standard may be available as custom items. These items shall be considered to comply with this standard if they comply with the property requirements listed in Table 3 and Table 5 except for dimensions and mass.

EN 4708-301:2018 is classified under the following ICS (International Classification for Standards) categories: 49.060 - Aerospace electric equipment and systems. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 4708-301:2018 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Wärmeschrumpfender Schlauch zur Befestigung, Isolierung und Identifizierung - Teil 301: Innenbeschichtete Polyolefin-Formteile - Temperaturbereich – 55 °C bis 105 °C - ProduktnormSérie aérospatiale - Manchons thermorétractables, de jonction, isolement et identification - Partie 301 : Gaine en polyoléfine avec revêtement d’un adhésif - Températures d'utilisation – 55 °C à 105 °C - Norme de produitAerospace series - Sleeving, heat-shrinkable, for binding, insulation and identification - Part 301: Adhesive lined polyolefin sleevings - Operating temperature - 55 °C to 105 °C - Product Standard49.060Aerospace electric equipment and systemsICS:Ta slovenski standard je istoveten z:EN 4708-301:2018SIST EN 4708-301:2018en,fr,de01-julij-2018SIST EN 4708-301:2018SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4708-301
May
t r s z ICS
v {ä r x r English Version
Aerospace series æ Sleevingá heatæshrinkableá for bindingá insulation and identification æ Part
u r sã Adhesive lined polyolefin sleevings æ Operating temperature æ
w w
¹C to
s r w
¹C æ Product Standard Série aérospatiale æ Manchons thermorétractablesá de jonctioná isolement et identification æ Partie
u r s ã Gaine en polyoléfine avec revêtement d 5un adhésif æ Températures d 5utilisation æ
w w
¹C à
s r w
¹C æ Norme de produit
Luftæ und Raumfahrt æ Wärmeschrumpfender Schlauch zur Befestigungá Isolierung und Identifizierung æ Teil
u r sã Innenbeschichtete PolyolefinæFormteile æ Temperaturbereich æ
w w
¹C bis
s r w
¹C æ Produktnorm This European Standard was approved by CEN on
s s September
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
v y r zæ u r sã t r s z ESIST EN 4708-301:2018

1 Published by: IEC International Commission Electrotechnique Internationale. http://www.iec.ch/. 2 Published by: Department of Defense (DoD). http://www.defenselink.mil/. 3 Published by: SAE National (US) Society of Automotive Engineers. http://www.sae.org/. SIST EN 4708-301:2018

4 Required characteristics 4.1 Dimension and mass See Table 1 and Table 2. Table 1 — Dimensional and mass requirements shrink ratio 3:1 Size code Internal diameter
mm Recovered total
wall thickness
mm Reco
...

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