SIST EN 4529-003:2026
(Main)Aerospace series - Elements of electrical and optical connection - Sealing plugs - Part 003: Class T - Product standard
General Information
- Abstract
This document specifies the required characteristics of sealing plugs, class T, for use in elements of electrical and optical connection containing cable (wire) sealing grommets, according to EN 4529-002. It is used together with EN 4529-001.
- Status
- Published
- Public Enquiry End Date
- 23-Jul-2025
- Publication Date
- 29-Sep-2026
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 29-Sep-2026
- Due Date
- 04-Dec-2026
- Completion Date
- 30-Sep-2026
Overview
SIST EN 4529-003:2026 is an aerospace standard for sealing plugs, class T, used in elements of electrical and optical connection that contain cable sealing grommets in accordance with EN 4529-002. It is intended to be used together with EN 4529-001, which provides the associated technical specification.
This product standard is relevant for organizations working with aerospace electric equipment and systems, especially where reliable sealing is needed in connection components. The document defines the required characteristics, including dimensions, mass, colours, material, designation, and applicable tests.
A key feature of this edition is the inclusion of a size code 10 option and updated requirements compared with the previous version. The sealing plug design is derived from MS27488, supporting continuity with established aerospace connector practice.
Key Topics
The standard focuses on practical requirements for aerospace sealing plugs and supports consistent product identification and evaluation.
Main points covered include:
- Scope and use for class T sealing plugs in electrical and optical connection elements
- Required characteristics such as dimensions, mass, and colours
- Material requirements, specifying PTFE in accordance with EN ISO 13000-2 Type E or equivalent
- Installation direction, with plugs fully inserted as shown in the standard
- Testing requirements aligned with the EN 2591 series
- Designation structure, including standard reference, model, and size code
- Technical specification according to EN 4529-001
The class T designation indicates an operating temperature range from −65 °C to 260 °C, making it suitable for demanding aerospace environments.
Applications
SIST EN 4529-003:2026 is useful in the design, procurement, and verification of aerospace connection systems where sealing performance matters. Typical applications include:
- Aerospace connectors with cable or wire sealing grommets
- Electrical and optical interconnection systems
- Component specification and procurement
- Product conformity assessment and quality control
- Engineering documentation for aerospace electrical systems
The standard supports manufacturers, integrators, and test laboratories by providing a common reference for sealing plug performance and compatibility. It also helps ensure that sealing plugs are selected and tested consistently across aerospace programs.
Related Standards
SIST EN 4529-003:2026 is part of a broader standards framework for aerospace connection elements. Related documents include:
- EN 4529-001 - Aerospace series - Elements of electrical and optical connection - Sealing plugs - Part 001: Technical specification
- EN 4529-002 - Aerospace series - Elements of electrical and optical connection - Sealing plugs - Part 002: Index of product standards
- EN 2591-101 - Visual examination
- EN 2591-102 - Examination of dimensions and mass
- EN 2591-206 - Measurement of insulation resistance
- EN 2591-301 - Endurance at temperature
- EN 2591-315 - Fluid resistance
- EN 2591-317 - Flammability
For aerospace manufacturers and suppliers, this standard provides a clear product basis for sealing plug specification, testing, and integration.
Relations
- Effective Date
- 09-Sep-2026
- Effective Date
- 09-Sep-2026
- Effective Date
- 09-Sep-2026
- Effective Date
- 09-Sep-2026
- Effective Date
- 09-Sep-2026
- Effective Date
- 09-Sep-2026
- Effective Date
- 09-Sep-2026
- Effective Date
- 02-Oct-2024
Get Certified
Connect with accredited certification bodies for this standard
BUREAU VERITAS Certification Germany
Bureau Veritas certification in Germany.
Element Materials Technology
Materials testing and product certification.
AQMS Ltd.
AQMS provides ISO certification to SMEs across the UK.
Sponsored listings
Frequently Asked Questions
SIST EN 4529-003:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Elements of electrical and optical connection - Sealing plugs - Part 003: Class T - Product standard". This standard covers: This document specifies the required characteristics of sealing plugs, class T, for use in elements of electrical and optical connection containing cable (wire) sealing grommets, according to EN 4529-002. It is used together with EN 4529-001.
This document specifies the required characteristics of sealing plugs, class T, for use in elements of electrical and optical connection containing cable (wire) sealing grommets, according to EN 4529-002. It is used together with EN 4529-001.
SIST EN 4529-003:2026 is classified under the following ICS (International Classification for Standards) categories: 49.060 - Aerospace electric equipment and systems; 49.090 - On-board equipment and instruments. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 4529-003:2026 has the following relationships with other standards: It is inter standard links to SIST EN 2997-001:2011, SIST EN 4529-002:2019, SIST EN 4529-002:2009, SIST EN 4701-001:2015, SIST EN 2997-001:2017, SIST EN 4830-002:2016, SIST EN 4830-001:2016, SIST EN 4529-003:2009. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 4529-003:2026 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)
SLOVENSKI STANDARD
01-november-2026
Aeronavtika - Elementi električnih in optičnih povezav - Tesnilni čepi - 003. del:
Razred T - Standard za proizvod
Aerospace series - Elements of electrical and optical connection - Sealing plugs - Part
003: Class T - Product standard
Luft- und Raumfahrt - Elektrische und optische Verbindungselemente - Verschluss-
Stopfen - Teil 003: Klasse T - Produktnorm
Série aérospatiale - Organes de connexion électrique et optique - Obturateurs
d’étanchéité - Partie 003 : Classe T - Norme de produit
Ta slovenski standard je istoveten z: EN 4529-003:2026
ICS:
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 4529-003
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2026
EUROPÄISCHE NORM
ICS 49.060; 49.090 Supersedes EN 4529-003:2006
English Version
Aerospace series - Elements of electrical and optical
connection - Sealing plugs - Part 003: Class T - Product
standard
Série aérospatiale - Organes de connexion électrique et Luft- und Raumfahrt - Elektrische und optische
optique - Obturateurs d'étanchéité - Partie 003 : Classe Verbindungselemente - Verschluss-Stopfen - Teil 003:
T - Norme de produit Klasse T - Produktnorm
This European Standard was approved by CEN on 3 August 2026.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye 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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4529-003:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Required characteristics . 6
4.1 Specific characteristics . 6
4.2 Dimensions – Mass, colours . 6
4.3 Material . 6
4.4 Dimensions and mass . 6
4.5 Tests . 8
5 Designation . 9
6 Marking . 9
7 Technical specification . 9
Bibliography . 10
European foreword
This document (EN 4529-003:2026) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, 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 March 2027, and conflicting national standards shall be
withdrawn at the latest by March 2027.
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.
This document supersedes EN 4529-003:2006.
EN 4529-003:2006:
— introduction of sealing plugs size code 10;
— correction of dimension lines for ⌀ B in Figure 1.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the natio
...