EN 12560-3:2001

SLOVENSKI STANDARD
01-maj-2002
Prirobnice in prirobnični spoji - Tesnila za prirobnice z oznako Class - 3. del:
Nekovinska tesnila v PTFE ovoju
Flanges and their joints - Gaskets for Class-designated flanges - Part 3: Non-metallic
PTFE envelope gaskets
Flansche und ihre Verbindungen - Dichtungen für Flansche mit Class-Bezeichnung - Teil
3: Nichtmetallische Weichstoffdichtungen mit PTFE-Mantel
Brides et leurs assemblages - Joints pour les brides désignées Class - Partie 3: Joints
non métalliques a enveloppe PTFE
Ta slovenski standard je istoveten z: EN 12560-3:2001
ICS:
23.040.60 Prirobnice, oglavki in spojni Flanges, couplings and joints
elementi
23.040.80 Tesnila za cevne zveze Seals for pipe and hose
assemblies
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 12560-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2001
ICS 23.040.80
English version
Flanges and their joints - Gaskets for Class-designated flanges -
Part 3: Non-metallic PTFE envelope gaskets
Brides et leurs assemblages - Joints pour les brides Flansche und ihre Verbindungen - Dichtungen für Flansche
désignées Class - Partie 3: Joints non métalliques à mit Class-Bezeichnung - Teil 3: Nichtmetallische
enveloppe PTFE Weichstoffdichtungen mit PTFE-Mantel
This European Standard was approved by CEN on 28 December 2000.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12560-3:2001 E
worldwide for CEN national Members.

Page 2
Contents
Page
Foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references. 5
3 Terms and definitions . 5
3.1 DN. 5
3.2 NPS . 5
3.3 Class . 6
4 Designations. 6
4.1 Range of Class designations . 6
4.2 Range of gasket sizes. 6
4.3 Gasket design . 6
4.4 Information to be supplied by the purchaser . 6
5 Gasket designs. 7
6 Gasket type. 8
7 Dimensions and tolerances. 8
7.1 Dimensions . 8
7.2 Tolerances.9
8 Marking .9
Annex A (informative) A-Deviations. 10

Page 3
Foreword
This European Standard 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 July 2001, and conflicting national standards shall be
withdrawn at the latest by July 2001.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,
Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.
The annex A is informative and contains "A-deviations".

Page 4
Introduction
EN 12560 consists of seven parts:
Part 1: Non-metallic flat gaskets with or without inserts
Part 2: Spiral wound gaskets for use with steel flanges
Part 3: Non-metallic PTFE envelope gaskets
Part 4: Corrugated, flat or grooved metallic and filled metallic gaskets for use with steel flanges
Part 5: Metallic ring-joint gaskets for use with steel flanges
Part 6: Kammprofile gaskets for use with steel flanges
Part 7: Covered metal jacketed gaskets for use with steel flanges
The terminology and definitions in this standard are in accordance with those given in ISO standards.
WARNING Gaskets made to this standard may contain asbestos. Materials containing asbestos may
be subject to legislation that requires precautions to be taken when handling them to ensure that they
do not constitute a hazard to health (see annex A). Attention is drawn to relevant EC directives.

Page 5
1 Scope
This European Standard specifies the dimensions and marking of IBC (inside bolt circle) non-metallic
PTFE envelope gaskets for use with flanges complying with prEN 1759-1:2000, prEN 1759-3:1994 and
prEN 1759-4:1997 for Class 150 and Class 300 for nominal sizes DN 15 and DN 600.
NOTE Dimensions of other types of gaskets for use with flanges complying with
prEN 1759-1:2000, prEN 1759-3:1994 and prEN 1759-4:2000 are given in
prEN 12560-1:2000, prEN 12560-2:2000, prEN 12560-4:2000, prEN 12560-5:2000,
prEN 12560-6:2000 and prEN 12560-7:2000.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this European Standard only when incorporated in it by amendment or revision. For undated
references the latest edition of the publication referred to applies (including amendments).
prEN 1759-1:2000
Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, Class designated
— Part 1: Steel flanges NPS
to NPS 24
prEN 1759-3:1994
Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, Class designated
— Part 3: Copper alloy flanges
prEN 1759-4:1997
Flanges and their joints – Circular flanges for pipes, values, fittings and accessories, Class designated –
Part 4: Aluminium alloy flanges
EN ISO 6708
Pipework components — Definition and selection of DN (nominal size) (ISO 6708:1995)
3 Terms and definitions
For the purposes of this European Standard the following terms and definitions apply:
3.1
DN
see EN ISO 6708
3.2
NPS
see prEN 1759-3:1994
Page 6
3.3
Class
see prEN 1759-3:1994
4 Designations
4.1 Range of Class designations
Gaskets shall be designated as suitable for use with one or both of the following Class designations of
flange:

Class 150 ;

Class 300.
4.2 Range of gasket sizes
Gasket nominal sizes shall be designated in accordance with the ranges specified in Table 1
...