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1、BRITISH STANDARD BS ISO 16589-5:2001 Rotary shaft lip-type seals incorporating thermoplastic sealing elements Part 5: Identification of visual imperfections ICS 23.040.80 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:
2、53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 16589-5:2001 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 21 March 2002 BSI 21 March
3、 2002 ISBN 0 580 39243 0 National foreword This British Standard reproduces verbatim ISO 16589-5:2001 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee MCE/11, Fluid seals and their housings, which has the responsibility to: A
4、 list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “Interna
5、tional Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a Br
6、itish Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and Europ
7、ean developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 18, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the d
8、ocument was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 16589-5:2001(E) INTERNATIONAL STANDARD ISO 16589-5 First edition 2001-12-15 Rotary shaft
9、lip-type seals incorporating thermoplastic sealing elements Part 5: Identification of visual imperfections Bagues dtanchit lvres pour arbres tournants incorporant des lments dtanchit thermoplastiques Partie 5: Identification des imperfections visuelles Licensed Copy: sheffieldun sheffieldun, na, Sun
10、 Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) ii Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) iii Contents Page Foreword.iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and
11、definitions .1 4 Characteristic imperfections1 4.1 Definition of sealing lip contact area.1 4.2 Typical imperfections1 4.3 Visual imperfections on seals with additional components.2 5 Identification statement (Reference to this part of ISO 16589)2 Bibliography18 Licensed Copy: sheffieldun sheffieldu
12、n, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) iv 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
13、 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
14、 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 3. The main task of technical committees is to prepare Internation
15、al 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 elem
16、ents of this part of ISO 16589 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 16589-5 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 7, Sealing devices. ISO 16589 consists of the followin
17、g 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 Licens
18、ed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) v 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
19、 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
20、the seal and the diameter of the housing bore retains the seal and prevents static leakage. Careful storage, handling and proper installation of all seals are necessary to avoid hazards, both prior to and during installation, which would adversely affect service life. Licensed Copy: sheffieldun shef
21、fieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD ISO 16589-5:2001(E) 1 Rotary shaft lip-type seals incorporating thermoplastic sealing elements
22、 Part 5: Identification of visual imperfections 1 Scope ISO 16589 describes seals utilizing sealing elements manufactured from suitably formulated compounds, based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). NOTE ISO 16589 is complementary to ISO 6194 which covers elastomeric
23、 seals. This part of ISO 16589 defines and classifies typical surface imperfections that could impair the function of the seals, and is intended as a convenience for purchasers and manufacturers in their discussions about the importance of these imperfections in different applications. 2 Normative r
24、eferences The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 16589. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this
25、 part of ISO 16589 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid Int
26、ernational Standards. ISO 5598:1985, Fluid power systems and components Vocabulary ISO 16589-2:2001, Rotary shaft lip-type seals incorporating thermoplastic sealing elements Part 2: Vocabulary 3 Terms and definitions For the purposes of this part of ISO 16589, the terms and definitions given in ISO
27、5598 and ISO 16589-2 apply. 4 Characteristic imperfections 4.1 Definition of sealing lip contact area See Figure 1. 4.2 Typical imperfections Some typical imperfections are shown in Figures 2 to 19 and listed in Tables 1 and 2. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:0
28、0 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) 2 4.3 Visual imperfections on seals with additional components 4.3.1 Outer circumference portion The imperfections on the outer circumference portion are the following: a) scratch; b) incorrect chamfer; c) incomplete bond. 4.3.2 Minor lip The im
29、perfections on the minor lip are the following: a) tear; b) cut or nick; c) non-fill; d) flash. 5 Identification statement (Reference to this part of ISO 16589) Manufacturers are strongly recommended to use the following statement in test reports, catalogues and sales literature when electing to com
30、ply with this part of ISO 16589: “The visual imperfections and assembly faults are in accordance with ISO 165895:2001, Rotary shaft lip-type seals incorporating thermoplastic sealing elements Part 5: Identification of visual imperfections.” Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:5
31、3:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) 3 NOTE In cases of wear, imperfections in the sealing lip contact area can impair the function of the rotary shaft lip-type seal during its lifetime. This dimension may vary according to the design standards of individual manufactur
32、ers. a Sealing lip contact area Figure 1 Sealing lip contact area Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) 4 a) Before lip has been formed b) After lip has been formed Figure 2 Typical imperfections Licensed Copy:
33、sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) 5 Table 1 Typical visual imperfections Figure 2 Item No. Description Detail illustration Figure No. 1 Sealing element reversal (hydrodynamic aid on the inside) 3 2 Nick 4 3 Incorrect hydro
34、dynamic aid feature 4 Uneven outer diameter sealant 5 Cut 5 6 Crack 6 7 Inclusion 7 8 Polymer window 8 9 Tear 9 10 Filler projections 10 11 Gasket extrusion 11 12 Sealing lip inversion 12 13 Incomplete trim 13 Table 2 Typical miscellaneous imperfections Description Detail illustration Figure No. Inc
35、orrect hydrodynamic aid feature 14 Rough surface finish, sealing element 15 Incorrect roll-over of retaining flange 16 Missing gasket 17 Lip eccentric to outer-case diameter (incorrectly formed on mandrel) 18 Lip eccentric to outer-case diameter (outer diameter of sealing element undersized) 19 Lice
36、nsed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) 6 Figure 3 Sealing element reversal (hydrodynamic aid on the inside) Figure 4 Nicks Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled
37、Copy, (c) BSI ISO 16589-5:2001(E) 7 Figure 5 Cut Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) 8 Figure 6 Crack Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
38、ISO 16589-5:2001(E) 9 Figure 7 Inclusion Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) 10 Figure 8 Polymer window Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BS
39、I ISO 16589-5:2001(E) 11 Figure 9 Tear Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) 12 Figure 10 Filler projections Figure 11 Gasket extrusion Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2
40、006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) 13 Figure 12 Sealing lip inversion Figure 13 Incomplete trim or folded flash Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) 14 a) Correct spiral direction: Hydrodynamic
41、 aid feature to suit clockwise rotating shaft when viewed from backside (air side) b) Incorrect spiral direction Figure 14 Example of correct and incorrect spiral directions Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E)
42、 15 a) Acceptable b) Unacceptable Illustration of a rough surface finish of a plain lip element, for example machining grooves. Figure 15 Rough surface finish, sealing element Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(
43、E) 16 Figure 16 Incorrect roll-over of retaining flange Figure 17 Missing gasket Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) 17 Sections shown at 180 through a seal Figure 18 Lip eccentric to outer-case diameter (inco
44、rrectly formed on mandrel) Sections shown at 180 through a seal Figure 19 Lip eccentric to outer-case diameter (outer diameter of sealing element undersized) Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 16589-5:2001(E) 18 Bibliography
45、 1 ISO 6194-1:1982, Rotary shaft lip type seals Part 1: Nominal dimensions and tolerances 2 ISO 6194-2:1991, Rotary shaft lip type seals Part 2: Vocabulary 3 ISO 6194-3:1988, Rotary shaft lip type seals Part 3: Storage, handling and installation 4 ISO 6194-4:1999, Rotary shaft lip type seals Part 4:
46、 Performance test procedures 5 ISO 6194-5:1990, Rotary shaft lip type seals Part 5: Identification of visual imperfections Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00
47、:00 2006, Uncontrolled Copy, (c) BSI BS ISO 16589-5:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is i
48、ncorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if
49、anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards public