EN 4708-106:2018
(Main)Aerospace series - Sleeving, heat-shrinkable, for binding, insulation and identification - Part 106: Limited fire hazard sleeving - Operating temperatures - 30 °C to 105 °C - Product standard
General Information
- Abstract
This document specifies the required characteristics for four types of heat-shrinkable limited fire hazard sleevings for use in aircraft electrical systems at operating temperatures between - 30 °C and 105 °C.
This sleeving is flexible, flame retarded and emits minimum smoke, gases and corrosive by-products when exposed to fire. It is available with various wall thicknesses and also in a higher shrink ratio according to the application and degree of mechanical protection required. It is suitable for use (e.g. as cable protection) in areas where smoke, gases or corrosive by-products would constitute a particular hazard.
Type A Thick wall shrink ratio 2:1 and is normally supplied with internal diameters up to 102,0 mm
Type B Medium wall, shrink ratio 2:1 and is normally supplied with internal diameters up to 60,0 mm
Type C Thick wall, shrink ratio 2:1 and is normally supplied with internal diameters up to 51,0 mm
Type D Medium wall, shrink ratio 3:1 and normally supplied with internal diameters up to 40,0 mm
The standard colour is black.
Sizes or colours 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 5, 6 and 7 except for dimensions and mass.
- Status
- Published
- Publication Date
- 16-Oct-2018
- Withdrawal Date
- 29-Apr-2019
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 2/S 8 - Installation Technologies
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 21-Jan-2024
- Completion Date
- 23-Sep-2026
Overview
EN 4708-106:2018 - published by CEN - is a product standard in the Aerospace series that defines performance and construction requirements for heat-shrinkable limited fire hazard sleeving used in aircraft electrical systems. It applies to flexible, flame-retarded, low-smoke sleeving designed to emit minimum smoke, gases and corrosive by-products when exposed to fire, for operating temperatures from -30 °C to 105 °C. The standard covers four sleeving types (A, B, C, D), standard sizing, and compliance criteria for mechanical, electrical and fire-related properties.
Key topics and requirements
- Sleeving types & shrink ratios
- Type A: thick wall, shrink ratio 2:1, up to 102.0 mm recovered ID
- Type B: medium wall, 2:1, up to 60.0 mm
- Type C: thick wall, 2:1, up to 51.0 mm (transparent option)
- Type D: medium wall, 3:1, up to 40.0 mm
- Materials & appearance
- Standard colour: black; other colours/sizes accepted if they meet property tables.
- Mechanical & thermal
- Tensile strength, elongation, secant modulus and heat-ageing requirements; water absorption ≤ 1.0 %
- Thermal endurance and dimensional stability after heat treatment and storage
- Electrical
- Breakdown voltage tied to recovered wall thickness (see standard’s Table 6); for wall < 0.50 mm dielectric strength ≥ 15 kV/mm
- Fire, smoke & toxicity
- Flame propagation limits, oxygen index at ambient and elevated temperature
- Smoke index ≤ 20, toxicity index ≤ 5, halogen content limits (expressed as chlorine) - strict low-halogen requirements
- Acid gas generation and pH limits specified for fire exposure
- Environmental & chemical resistance
- Resistance to aviation fuels, hydraulic fluids, oils, de-icers and selected cleaning fluids (Table 7)
- Fungus resistance per EN ISO 846
Applications and users
- Primary use: cable protection, binding, insulation and identification in aircraft and avionics where low smoke, low toxicity and limited corrosive emissions are critical (e.g., passenger cabins, avionics bays, escape routes)
- Typical users:
- Aerospace OEMs and Tier 1 suppliers
- Wiring harness manufacturers and electrical system integrators
- Maintenance, repair & overhaul (MRO) organizations and certification authorities
- Suppliers of heat-shrinkable tubing seeking EN/CEN approval
Related standards
- EN 4708-001 (technical specification), EN 60684-1/2 (sleeving test methods), EN ISO 846 (fungus), ISO 1817 (fluid resistance), IEC 60757 (colour code), EN 3909 (test fluids)
EN 4708-106:2018 is essential for ensuring heat-shrinkable sleeving meets the rigorous fire-safety, electrical and durability expectations of modern aerospace electrical systems.
Relations
- Effective Date
- 25-Aug-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 28-Jan-2026
- Refers
EN 4855-02:2020 - Aerospace series - ECO efficiency of catering equipment - Part 02: Oven equipment - Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
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Frequently Asked Questions
EN 4708-106:2018 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 106: Limited fire hazard sleeving - Operating temperatures - 30 °C to 105 °C - Product standard". This standard covers: This document specifies the required characteristics for four types of heat-shrinkable limited fire hazard sleevings for use in aircraft electrical systems at operating temperatures between - 30 °C and 105 °C. This sleeving is flexible, flame retarded and emits minimum smoke, gases and corrosive by-products when exposed to fire. It is available with various wall thicknesses and also in a higher shrink ratio according to the application and degree of mechanical protection required. It is suitable for use (e.g. as cable protection) in areas where smoke, gases or corrosive by-products would constitute a particular hazard. Type A Thick wall shrink ratio 2:1 and is normally supplied with internal diameters up to 102,0 mm Type B Medium wall, shrink ratio 2:1 and is normally supplied with internal diameters up to 60,0 mm Type C Thick wall, shrink ratio 2:1 and is normally supplied with internal diameters up to 51,0 mm Type D Medium wall, shrink ratio 3:1 and normally supplied with internal diameters up to 40,0 mm The standard colour is black. Sizes or colours 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 5, 6 and 7 except for dimensions and mass.
This document specifies the required characteristics for four types of heat-shrinkable limited fire hazard sleevings for use in aircraft electrical systems at operating temperatures between - 30 °C and 105 °C. This sleeving is flexible, flame retarded and emits minimum smoke, gases and corrosive by-products when exposed to fire. It is available with various wall thicknesses and also in a higher shrink ratio according to the application and degree of mechanical protection required. It is suitable for use (e.g. as cable protection) in areas where smoke, gases or corrosive by-products would constitute a particular hazard. Type A Thick wall shrink ratio 2:1 and is normally supplied with internal diameters up to 102,0 mm Type B Medium wall, shrink ratio 2:1 and is normally supplied with internal diameters up to 60,0 mm Type C Thick wall, shrink ratio 2:1 and is normally supplied with internal diameters up to 51,0 mm Type D Medium wall, shrink ratio 3:1 and normally supplied with internal diameters up to 40,0 mm The standard colour is black. Sizes or colours 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 5, 6 and 7 except for dimensions and mass.
EN 4708-106:2018 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 4708-106:2018 has the following relationships with other standards: It is inter standard links to ISO 1817:2015, EN IEC 60684-2:2025, EN 60684-1:2003, EN ISO 846:2019, EN 4855-02:2020, EN 3909:2016, EN 4708-001:2019. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 4708-106:2018 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 106: Schlauch mit reduziertem Brandverhalten - Temperaturbereich - 30 °C und 150 °C - ProduktnormSérie aérospatiale - Manchons thermorétractables, de jonction, isolement et identification - Partie 106 : Risque d'incendie limité - Températures d'utilisation -30 °C à 105 °C - Norme de produitAerospace series - Sleeving, heat-shrinkable, for binding, insulation and identification - Part 106: Limited fire hazard sleeving - Operating temperature - 30 °C to 150 °C - Product standard49.060Aerospace electric equipment and systemsICS:Ta slovenski standard je istoveten z:EN 4708-106:2018SIST EN 4708-106:2018en,fr,de01-december-2018SIST EN 4708-106:2018SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4708-106
October
t r s z ICS
v {ä r x r English Version
Aerospace series æ Sleevingá heatæshrinkableá for bindingá insulation and identification æ Part
s r xã Limited fire hazard sleeving æ Operating temperatures æ
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¹C æ Product standard Série aérospatiale æ Manchons thermorétractablesá de jonctioná isolement et identification æ Partie
s r x ã Risque d 5incendie limité æ Températures d 5utilisation æ
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s r w
¹C æ Norme de produit
Luftæ und Raumfahrt æ Wärmeschrumpfender Schlauch zur Befestigungá Isolierung und Identifizierung æ Teil
s r xã Schlauch mit reduziertem Brandverhalten æ Temperaturbereich æ
u r
¹C und
s r w
¹C æ ProduktnormThis European Standard was approved by CEN on
t y May
t r s zä
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 s r xã t r s z ESIST EN 4708-106:2018
u 1 Scope . 4 2 Normative references . 4
u Terms and definitions .
w 4 Required characteristics .
w
w Quality assurance .
s u 6 Designation .
s u 7 Labelling and packaging .
s u 8 Technical specification .
s u
u European foreword This document (EN 4708-106:2018) 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 April 2019, and conflicting national standards shall be withdrawn at the latest by April 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 United Kingdom. SIST EN 4708-106:2018
1) Published by: IEC International Electrotechnical Commission, http://www.iec.ch/ SIST EN 4708-106:2018
w
u Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60684-1 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses:
IEC Electropedia: available at http://www.electropedia.org/
ISO Online browsing platform: available at http://www.iso.org/obp
4 Required characteristics
Dimensions and mass See Tables 1 to 4. Table 1 — Type A – Dimensional and mass requirements Size code Internal diameter mm Recovered wall thickness Mass per unit length max. Expanded min. Recovered max. mm g/m 3,2/1,6 3,2 1,6 0,50 ± 0,10 6,0 4,8/2,4 4,8
2,4 0,50 ± 0,10 8,2 6,4/3,2 6,4
3,2 0,65 ± 0,15 13,5 9,5/4,8 9,5 4,8
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