ISO 16589-4:2011

SLOVENSKI STANDARD
SIST ISO 16589-4:2014
01-marec-2014
1DGRPHãþD
SIST ISO 16589-4:2002
)OXLGQDWHKQLND8VWQLþQHJUHGQHWHVQLONHVWHUPRSODVWLþQLPLWHVQLOQLPLHOHPHQWL
GHO3RVWRSNLSUHVNXãDQMD
Rotary shaft lip-type seals incorporating thermoplastic sealing elements - Part 4:
Performance test procedures
Bagues d'étanchéité à lèvres pour arbres tournants incorporant des éléments
d'étanchéité thermoplastiques - Partie 4: Modes opératoires des essais de performance
Ta slovenski standard je istoveten z: ISO 16589-4:2011
ICS:
23.100.60 )LOWULWHVQLODLQ Filters, seals and
RQHVQDåHYDQMHWHNRþLQ contamination of fluids
SIST ISO 16589-4:2014 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST ISO 16589-4:2014

---------------------- Page: 2 ----------------------

SIST ISO 16589-4:2014

INTERNATIONAL ISO
STANDARD 16589-4
Second edition
2011-04-15

Rotary shaft lip-type seals incorporating
thermoplastic sealing elements —
Part 4:
Performance test procedures
Bagues d'étanchéité à lèvres pour arbres tournants incorporant des
éléments d'étanchéité thermoplastiques —
Partie 4: Modes opératoires des essais de performance




Reference number
ISO 16589-4:2011(E)
©
ISO 2011

---------------------- Page: 3 ----------------------

SIST ISO 16589-4:2014
ISO 16589-4:2011(E)

COPYRIGHT PROTECTED DOCUMENT


©  ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland

ii © ISO 2011 – All rights reserved

---------------------- Page: 4 ----------------------

SIST ISO 16589-4:2014
ISO 16589-4:2011(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .2
4 Pre-test procedure.2
5 Dynamic normal temperature test .2
5.1 Test apparatus .2
5.2 Installation.4
5.3 Test conditions .5
5.4 Test procedure.5
5.5 Post-test measurements.5
5.6 Recording.5
5.7 Acceptance criteria .5
6 Dynamic low temperature test .5
6.1 General .5
6.2 Test apparatus .5
6.3 Installation.6
6.4 Test procedure.6
6.5 Post-test measurements.7
6.6 Recording.7
6.7 Acceptance criteria .7
7 Material testing of the rotary shaft seal components.7
7.1 General .7
7.2 Metallic components (cases) .7
7.3 Non-metallic components.7
7.3.1 Thermoplastic sealing elements.7
7.3.2 Elastomeric sealing elements — gaskets, protection lip and sealant.7
8 Identification statement (Reference to this part of ISO 16589).7
Annex A (informative) Typical example of seal test report for the dynamic normal temperature
test .8
Annex B (informative) Typical example of a seal test report for the dynamic low temperature test .10
Annex C (informative) Typical example of a material test report (thermoplastic element).12
Annex D (informative) Typical example of a material test report (elastomeric element) .13
Bibliography.15

© ISO 2011 – All rights reserved iii

---------------------- Page: 5 ----------------------

SIST ISO 16589-4:2014
ISO 16589-4:2011(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16589-4 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 7,
Sealing devices.
This second edition cancels and replaces the first edition (ISO 16589-4:2001), which has been technically
revised.
ISO 16589 consists of the following parts, under the general title Rotary shaft lip-type seals incorporating
thermoplastic sealing elements:
⎯ Part 1: Nominal dimensions and tolerances
⎯ Part 2: Vocabulary
⎯ Part 3: Storage, handling and installation
⎯ Part 4: Performance test procedures
⎯ Part 5: Identification of visual imperfections

iv © ISO 2011 – All rights reserved

---------------------- Page: 6 ----------------------

SIST ISO 16589-4:2014
ISO 16589-4:2011(E)
Introduction
Rotary shaft lip-type seals are used to retain fluid in equipment where the differential pressure is relatively low.
Typically, the shaft rotates and the housing is stationary, although in some applications the shaft is stationary
and the housing rotates.
Dynamic sealing is normally the result of a designed interference fit between the shaft and a flexible element
incorporated in the seal.
Similarly, a designed interference fit between the outside diameter of the seal and the diameter of the housing
bore retains the seal and prevents static leakage.
Careful storage and handling and proper installation of all seals are necessary to avoid hazards, both prior to
and during installation, which would adversely affect service life.

© ISO 2011 – All rights reserved v

---------------------- Page: 7 ----------------------

SIST ISO 16589-4:2014

---------------------- Page: 8 ----------------------

SIST ISO 16589-4:2014
INTERNATIONAL STANDARD ISO 16589-4:2011(E)

Rotary shaft lip-type seals incorporating thermoplastic sealing
elements —
Part 4:
Performance test procedures
WARNING — Persons using this part of ISO 16589 should be familiar with normal laboratory practice.
Whilst this part of ISO 16589 does not purport to address all the safety problems, if any, associated
with its application, attention is drawn to the need to employ sensible precautions while handling hot
and cold fluids and equipment. It is the responsibility of the user of this part of ISO 16589 to establish
appropriate safety and health practices and to ensure compliance with any national regulatory
conditions.
1 Scope
ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based
on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use
under low pressure conditions.
This part of ISO 16589 specifies general performance tests which can be used for seal qualification purposes.
Materials quality control, dynamic testing, and supplementary low temperature testing requirements are
covered.
NOTE ISO 16589 is complementary to ISO 6194, which covers seals incorporating elastomeric sealing elements.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 5598, Fluid power systems and components — Vocabulary
ISO 16589-1, Rotary shaft lip-type seals incorporating thermoplastic sealing elements — Part 1: Nominal
dimensions and tolerances
ISO 16589-2, Rotary shaft lip-type seals incorporating thermoplastic sealing elements — Part 2: Vocabulary
© ISO 2011 – All rights reserved 1

---------------------- Page: 9 ----------------------

SIST ISO 16589-4:2014
ISO 16589-4:2011(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5598 and ISO 16589-2 and the
following apply.
3.1
batch
identifiable and traceable consignment of thermoplastic and rubber compounds of definite composition and
manufactured in a single production operation
4 Pre-test procedure
4.1 Inspect all seals submitted for testing, for conformity to a relevant drawing or detailed specification,
declared by the seal manufacturer.
4.2 Ensure that the seal manufacturer has stated the material batch numbers from which the seals have
been manufactured. For seals with an elastomeric component, ensure that the seal manufacturer has stated
the material batch number from which the elastomeric component of the seal has been made.
4.3 To facilitate accurate analysis of the test results, determine the following data concerning the physical
characteristics of the seal and test apparatus before testing:
a) lip diameter immediately prior to assembly onto the shaft;
b) lip thickness when measured as assembled on the test shaft;
c) outer case mean diameter and out of roundness;
d) shaft diameter, material, hardness and surface roughness;
e) housing diameter, material and surface roughness;
f) protection lip diameter, when applicable.
For a), b) and f), measuring instruments with sharp edges should not be used.
The radial lip load should not be measured before the test.
4.4 Ensure that the specified shaft eccentricity and housing offset of the test apparatus have been
incorporated.
5 Dynamic normal temperature test
5.1 Test apparatus
The test apparatus shall be similar to the typical example shown in Figure 1 and shall consist of a suitable
housing for retaining the test fluid and for positioning the test seals, as well as a rotating member having a
spindle mounted horizontally on suitable bearings. The design of the housing for the seal shall be in
accordance with the dimensions specified in ISO 16589-1. The housing and the rotating member shall be
capable of reproducing the eccentricity and offset referred to in 4.4.
2 © ISO 2011 – All rights reserved

---------------------- Page: 10 ----------------------

SIST ISO 16589-4:2014
ISO 16589-4:2011(E)
The test apparatus shall also conform to the following additional requirements.
a) The shaft shall be capable of cycling and/or maintaining the shaft speeds to within ±5 %.
b) The shaft shall be capable of maintaining the specified test eccentricity under dynamic conditions to
within ±0,03 mm throughout each test.
c) The test head shall be designed and constructed so as to maintain the housing bore alignment relative to
the test shaft axis within ±0,03 mm throughout the operating temperature range.
d) The design of the test head support shall ensure minimum deformation and vibration.
e) The test head and heat transfer system shall be capable of maintaining the temperature of the test fluid
within ±5 °C and shall be vented to atmosphere.
f) Heat shall be applied in a manner that does not subject the test fluid to high localized temperatures which
could cause fluid decomposition.
g) The test shaft shall have a surface which is free of helical machine marks and shall comply with the
requirements for shafts specified in ISO 16589-1, Clause 7.
h) The test housing bore shall comply with the requirements specified in ISO 16589-1, Clause 8.
i) The material properties — including hardness, surface finish and dimensions of the test shaft and test
housing bore — shall co
...