SIST EN 4811:2017

Aerospace series - Flange couplings - Gasket seal with fluorocarbon seal on aluminium plate with 4 fastening holes - Inch series

This standard specifies the characteristics of gasket seal with fluorocarbon seal on aluminium plate, 4 holes, for pipe couplings for inch series aerospace applications.
Nominal pressure: up to 21 000 kPa; depends on the associated tube material and tube wall thickness in the assembly (see EN 4814).
Temperature range: - 20 °C to 200 °C.
NOTE   Assembly in accordance with TR 4815.
This part should not be reused after disassembling.

Luft- und Raumfahrt - Rohrverschraubung mit Flanschen - Flachdichtung aus Fluorocarbon-Elastomer, mit Aluminiumarmierung mit 4 Befestigungslöchern - Inch-Reihe

Diese Europäische Norm legt die Eigenschaften von Flachdichtungen aus Fluorocarbon-Elastomer mit Aluminiumarmierung mit 4 Löchern für Rohrverbindungen (Inch-Reihe) in Anwendungen der Luft- und Raumfahrt fest.
Nenndruck: Bis zu 21 000 kPa; abhängig von dem Rohrmaterial und der Dicke der Rohrwand bei dem Aufbau (siehe EN 4814).
Temperaturbereich: −20 °C bis 200 °C.
ANMERKUNG   Aufbau nach TR 4815.
Dieser Teil sollte nach der Demontage nicht wieder verwendet werden.

Série aérospatiale - Raccordement à bride - Joint plaque avec joint en fluorocarbone sur plaque en aluminium avec 4 trous de fixation - Série en inches

Aeronavtika - Prirobnične spojke - Robna tesnila z fluoroogljikovimi tesnili na aluminijevi plošči s 4 pritrdilnimi luknjami - Palčne mere

Ta standard določa karakteristike robnega tesnila s fluoroogljikovimi tesnili na aluminijevi plošči s 4 pritrdilnimi luknjami za prirobnične spojke v palčnih merah za aeronavtiko.
Nazivni tlak: do 21.000 kPa, odvisno od materiala povezane cevi, premera cevi in debeline stene cevi v sestavu (glej standard EN 4814).
Temperaturno območje: od −20 °C do 200 °C
OPOMBA Sestav v skladu s TR 4815.
Tega dela se po demontaži naj ne bi znova uporabilo.

General Information

• Status: Published
• Publication Date: 29-Aug-2017
• ICS: 23.040.60 - Flanges, couplings and joints
• ICS: 49.025.20 - Aluminium
• ICS: 49.080 - Aerospace fluid systems and components
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 02-Jun-2017
• Due Date: 07-Aug-2017
• Completion Date: 30-Aug-2017
• Ref Project: EN 4811:2017 - Aerospace series - Flange couplings - Gasket seal with fluorocarbon seal on aluminium plate with 4 fastening holes - Inch series

Overview

EN 4811:2017 is a CEN / Aerospace series standard that defines the characteristics of a gasket seal with a fluorocarbon (FPM) seal bonded to an aluminium plate with four fastening holes for inch-series flange couplings. It targets high‑performance aerospace pipe couplings used in fluid and hydraulic systems and sets limits on pressure, temperature, materials, marking and reuse. Key operational limits: nominal pressure up to 21 000 kPa (dependent on tube material and wall thickness per EN 4814) and a temperature range of −20 °C to 200 °C. Assembly must follow TR 4815 and the gasket is not reusable after disassembly.

Key topics and technical requirements

• Configuration & dimensions: Inch-series geometry and tolerances are specified (see figure/table in the standard). Typical nominal diameters and bolt thread families (codes A, B, C) are defined for compatibility with flange couplings.
• Materials:
  • Plate material: aluminium per EN 2693 or EN 2699.
  • Seal material: fluorocarbon rubber per EN 2798 (low compression set, 80 IRHD).
• Surface treatment: aluminium plate finish to EN 2284BC (Green).
• Adherence and construction: two seal parts adhered to the plate and bonded together through equally spaced holes; design must avoid beads outside lateral cavities during assembly.
• Pressure & temperature: up to 21 000 kPa (assembly-dependent) and −20 °C to 200 °C usable range.
• Testing and technical specification: referenced EN 4054 provides ageing and pressurizing test minima.
• Marking and identification: marking per EN 2424, Category A.
• Quality assurance: manufacturer approval and quality systems per EN 9100.
• Non‑reuse: explicit requirement that gasket seals shall not be reused after disassembly.

Applications and who uses it

EN 4811:2017 applies to aerospace and defence fluid system components where reliable, leak‑tight flange coupling seals are required, such as:

• Aircraft hydraulic and fuel system designers and engineers
• OEMs and sub-tier manufacturers of pipe couplings and flange assemblies
• Procurement teams specifying aerospace‑grade gasket seals
• Maintenance, repair and overhaul (MRO) organizations and certification bodies ensuring compliance
• Quality and test engineers responsible for material, surface treatment and pressure/temperature validation

This standard ensures interchangeability, traceability and safe operation of inch‑series flange coupling seals in aerospace environments.

Related standards (normative references)

• EN 2284 (sulphuric acid anodizing of aluminium)
• EN 2424 (marking of aerospace products)
• EN 2693 / EN 2699 (aluminium alloys)
• EN 2798 (fluorocarbon rubber)
• EN 4054 (seals technical specification)
• EN 4814 (flange couplings – see for tube material/wall thickness)
• TR 4815 (assembly design)
• EN 9100 (quality management for aerospace)

Keywords: EN 4811:2017, flange couplings, gasket seal, fluorocarbon seal, aluminium plate, aerospace standard, inch series, pressure 21 000 kPa, temperature −20 °C to 200 °C.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2017
$HURQDYWLND3ULUREQLþQHVSRMNH5REQDWHVQLOD]IOXRURRJOMLNRYLPLWHVQLOLQD
DOXPLQLMHYLSORãþLVSULWUGLOQLPLOXNQMDPL3DOþQHPHUH
Aerospace series - Flange couplings - Gasket seal with fluorocarbon seal on aluminium
plate with 4 fastening holes - Inch series
Luft- und Raumfahrt - Rohrverschraubung mit Flanschen - Flachdichtung aus
Fluorocarbon-Elastomer, mit Aluminiumarmierung mit 4 Befestigungslöchern - Inch-
Reihe
Série aérospatiale - Raccordement à bride - Joint plaque avec joint en fluorocarbone sur
plaque en aluminium avec 4 trous de fixation - Série en inches
Ta slovenski standard je istoveten z: EN 4811:2017
ICS:
23.040.60 Prirobnice, oglavki in spojni Flanges, couplings and joints
elementi
49.025.20 Aluminij Aluminium
49.080 /HWDOVNLLQYHVROMVNL Aerospace fluid systems and
KLGUDYOLþQLVLVWHPLLQGHOL components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4811
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2017
EUROPÄISCHE NORM
ICS 49.080
English Version
Aerospace series - Flange couplings - Gasket seal with
fluorocarbon seal on aluminium plate with 4 fastening
holes - Inch series
Série aérospatiale - Raccordement à bride - Joint Luft- und Raumfahrt - Rohrverschraubung mit
plaque avec joint en fluorocarbone sur plaque en Flanschen - Flachdichtung aus Fluorocarbon-
aluminium avec 4 trous de fixation - Série en inches Elastomer, mit Aluminiumarmierung mit 4
Befestigungslöchern - Inch-Reihe
This European Standard was approved by CEN on 14 November 2016.

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: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4811:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Required characteristics . 4
4 Designation . 7
5 Identification marking . 7
6 Technical specification . 7
7 Quality Assurance. 7

European foreword
This document (EN 4811:2017) 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 2017,
...