EN 13555:2014

SLOVENSKI STANDARD
01-julij-2014
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SIST EN 13555:2005
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Flanges and their joints - Gasket parameters and test procedures relevant to the design
rules for gasketed circular flange connections
Flansche und ihre Verbindungen - Dichtungskennwerte und Prüfverfahren für die
Anwendung der Regeln für die Auslegung von Flanschverbindungen mit runden
Flanschen und Dichtungen
Brides et leurs assemblages - Paramètres de joints et procédures d'essai relatives aux
règles de calcul des assemblages à brides circulaires avec joint
Ta slovenski standard je istoveten z: EN 13555:2014
ICS:
23.040.60 Prirobnice, oglavki in spojni Flanges, couplings and joints
elementi
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 13555
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2014
ICS 23.040.60; 23.040.80 Supersedes EN 13555:2004
English Version
Flanges and their joints - Gasket parameters and test
procedures relevant to the design rules for gasketed circular
flange connections
Brides et leurs assemblages - Paramètres de joints et Flansche und ihre Verbindungen - Dichtungskennwerte und
procédures d'essai relatives aux règles de calcul des Prüfverfahren für die Anwendung der Regeln für die
assemblages à brides circulaires avec joint Auslegung von Flanschverbindungen mit runden Flanschen
und Dichtungen
This European Standard was approved by CEN on 28 February 2014.

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, 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
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13555:2014 E
worldwide for CEN national Members.

Contents Page
Foreword .4
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms and definitions .7
4 Symbols .8
5 List of gasket parameters .9
6 Test equipment .9
6.1 Design .9
6.2 Test platens .9
6.3 Metal Foils . 10
6.4 Surface finish . 10
6.5 Measurement of gasket thickness . 10
6.6 Loading . 10
6.7 Temperature . 10
6.8 Leakage measurement . 11
7 Test gaskets . 11
7.1 Number of gaskets. 11
7.2 Procurement and identification of gaskets . 11
7.3 Pre-conditioning of the gaskets . 11
7.4 Dimensions of test gaskets . 11
7.5 Measurement of test gaskets as received . 12
7.6 Influence of gasket dimensions . 12
8 Test procedures . 13
8.1 General . 13
8.2 Testing Strategy . 13
8.3 Reference gasket thickness . 13
8.4 Compression curve . 13
8.5 Determination of Q . 14
smax
8.6 Determination of the values of E . 17
G
8.7 Determination of P and Δe . 19
QR Gc
8.8 Determination of Q and Q . 19
min(L) smin(L)
8.9 Determination of Q at elevated temperatures . 22
smin(L)
8.10 Determination of axial coefficient of thermal expansion . 22
8.11 Determination of the coefficient of static friction . 23
9 Report details . 23
Annex A (informative) Generalised test rig schematic . 24
Annex B (informative) Test rig schematic for compression and compression creep tests . 25
Annex C (informative) Test rig schematic for ambient temperature leakage measurement . 26
Annex D (informative) Schematic of leakage rig allowing use of interchangeable face plate . 27
Annex E (informative) Transferability of measured leakage rates to service conditions . 28
Annex F (informative) The measurement of the sealing parameter Q after long term
smin(L)
service simulating exposure to elevated temperature . 29
Figure F.1 — The measurement of sealing parameters of heat aged gaskets . 29
Annex G (informative) Determination of the sealing characteristics of strip sealing materials
available in coil form . 31
Annex H (informative) Proposed method for the determination of the coefficient of static friction,
µ , of gaskets . 32
G
Bibliography . 34

Foreword
This document (EN 13555:2014) has been prepared by Technical Committee CEN/TC 74 “Flanges and their
joints”, the secretariat of which is held by DIN.
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 October 2014, and conflicting national standards shall be withdrawn at
the latest by October 2014.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 13555:2004.
In comparison to EN 13555:2004 the following changes have been made:
a) in Clause 3 the list of definitions has been revised;
b) in Clause 4 the list of symbols has been revised;
c) a new sub-clause 6.3 with testing requirements for metal foils has been added;
d) sub-clause 6.4 on surface finish has been revised;
e) sub-clauses 7.2 and 7.3 on test gaskets have been revised;
f) Clause 8 including Figure 1a) to Figure 6 on testing procedures has been completely revised;
g) in Clause 9 the report details have been revised;
h) Annex F on relationship of gasket parameters in EN 13555 with those from PVRC method has been
revised;
i) a new informative Annex G on determination of the sealing characteristics of strip sealing materials
available in coil form has been added;
j) a new informative Annex H on the proposed method for the determination of the coefficient of static
friction of gaskets has been added.
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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Introduction
This document provides the test procedures to allow the generation of the gasket parameters to enable the
design equations established in EN 1591-1 to be employed. The same test procedures may be used for “Type
Testing” of gaskets and gasket materials. These procedures are not for routine quality control purposes.
1 Scope
This European Standard specifies the gasket parameters required by EN 1591-1 and provides the test
procedures for establishing the values of these parameters.
Gaskets which are wholly based upon elastomers, or based upon elastomers with only the inclusion of
particulate fillers or particulate reinforcement, as opposed to gaskets combining elastomers, fillers and fibrous
reinforcement, are beyond the scope of this document.
NOTE The testing procedures given might be applicable to gaskets of other shapes and dimensions.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 1092 (all parts), Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN
designated
EN 1514-1, Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 1: Non-metallic
flat gaskets with or without inserts
EN 1514-2, Flanges and their joints - Gaskets for PN-designated flanges - Part 2: Spiral wound gaskets for
use with steel flanges
EN 1514-3, Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 3: Non-metallic
PTFE envelope gaskets
EN 1514-4, Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 4: Corrugated,
flat or grooved metallic and filled metallic gaskets for use with steel flanges
EN 1514-6, Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 6: Covered
serrated metal gaskets for use with steel flanges
EN 1514
...