1、BRITISH STANDARDBS EN 682:2002Incorporating Amendment No. 1Elastomeric seals Materials requirements for seals used in pipes and fittings carrying gas and hydrocarbon fluidsThe European Standard EN 682:2002, with the incorporation of ICS 23.040; 83.140.50g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50
2、g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58amendment A1:2005, has the status of a British StandardBS EN 682:2002This British Standard was published under the authority of the Standards Poli
3、cy and Strategy Committee on 28 March 2002 BSI 6 March 2006ISBN 0 580 39273 2National forewordThis British Standard is the official English language version of EN 682:2002, including amendment A1:2005. Together with BS EN 681-2:2000 this publication supersedes BS 24942:1990 which is withdrawn.The st
4、art and finish of text introduced or altered by CEN amendment is indicated in the text by tags . Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by .The UK participation in its preparation was entrusted to Technica
5、l Committee PRI/70, Elastomeric seals for joints in pipes, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in th
6、is document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a con
7、tract. Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals f
8、or change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 18, an inside back cover and a back cover.The BSI copyright dat
9、e displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date Comments15837 March 2006 See national foreword 1,“* -/ , “, 1,“* 1,“*- “, niL -nx i iV-iiiiiviiivV VLvijV jjiVV V-jVvVijijV jjiViiVVj Viivi VLi i V i7ivvviiv V i6iii iivvi iivvii
10、 Bix iLiiLV i i,i V i iVv i- iv i1iLL ViviiViVViV LiLiV iii ii iLi/ i-i iivvVi iV ii iiiLi iiLv iLiivi iii ii ii ivvVi iLii iLiv i iV ,iLV i ViiiiViVii iL i i *-i-ii-i1i 1,“* “/ “, -/ , ii iiii- x i vivLiiiiiv iLi,iv nxxViiix(inclut lamendement A1:2005)This European Standard was approved by CEN on 1
11、6 November 2001. Amendment A1 was approved by CEN on 14 July 2005.Contents page Foreword 3 1 Scope 4 2 Normative references 5 3 Classification . 6 4 Requirements . 6 4.1 Materials . 6 4.2 Finished seal requirements 6 4.2.1 Dimensional tolerances 6 4.2.2 Imperfections and defects 6 4.2.3 Hardness 7 4
12、.2.4 Tensile strength and elongation at break . 7 4.2.5 Compression set in air . 7 4.2.6 Accelerated ageing in air . 7 4.2.7 Stress relaxation in compression . 7 4.2.8 Volume change in liquid B 8 4.2.9 Volume change in oil . 8 4.2.10 Ozone resistance . 8 4.2.11 Compression set at - 15 C 8 5 Test pie
13、ces and temperature 10 5.1 Preparation of test pieces . 10 5.2 Test temperature 10 6 Factory production control . 11 7 Factory product control tests . 11 7.1 Sampling . 11 7.2 Routine tests 11 7.3 Type tests . 11 8 Storage 11 9 Designation 12 10 Marking and labelling 12 Annex A (informative) Guidanc
14、e on storage of seals 13 Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Directive . 14 Bibliography . 18 2 EN 682:2002 (E)Foreword This European Standard has been prepared by Technical Committee CEN/TC 208 “Elastomeric seals for joi
15、nts in pipework and pipelines”, the secretariat of which is held by BSI. 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 August 2002, and conflicting national standards shall be withdrawn at the l
16、atest by November 2003. No existing European Standard is superseded. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s)
17、, see informative annex ZA, which is an integral part of this standard. This European Standard is based on ISO 6447 and ISO 6448, bringing together the requirements for seals used in gas and hydrocarbon fluid applications. The major changes from ISO 6447 and ISO 6448 have been to introduce additiona
18、l test requirements e.g. an ozone test and to modify some requirements. Finished joint seals have been classified according to their final application and operating temperatures. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bo
19、und to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Foreword to amendment A1 This document (EN 682:2002/A1:2
20、005) has been prepared by Technical Committee CEN/TC 208 “Elastomeric seals for joints in pipework and pipelines”, the secretariat of which is held by BSI. This Amendment to the European Standard EN 682:2002 shall be given the status of a national standard, either by publication of an identical text
21、 or by endorsement, at the latest by February 2006, and conflicting national standards shall be withdrawn at the latest by February 2006. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard:
22、Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. 3EN 682:2002 (E)1 Scope This
23、 European Standard specifies requirements for elastomeric materials used in seals for supply pipes and fittings, ancillaries and valves at operating temperatures in general from - 5 C up to 50 C and in special cases from - 15 C up to 50 C, for the following: General applications (see Table 4, type G
24、) a) gaseous fuel (manufactured, natural and liquefied petroleum gas LPG in gaseous phase); b) hydrocarbon fluids with aromatic content up to 30 % (V/V), including LPG in liquid phase. Special applications (see Table 4, type H) Materials suitable for carrying gaseous fuels containing gas condensates
25、 and hydrocarbon fluids of unrestricted aromatic content. General requirements for finished joint seals are also given; any additional requirements called for by the particular application are specified in the relevant product standards taking into account that the performance of pipe joints is a fu
26、nction of the seal material properties, seal geometry and pipe joint design. This European Standard should be used where appropriate with product standards which specify performance requirements for joints. This European Standard is applicable to joint seals for all pipeline materials including iron
27、, steel, copper and plastics. In the case of composite seals requirements in 4.2.8 and 4.2.9 apply only when the materials used for any elastomeric parts come into contact with gaseous fuel or hydrocarbon fluid. Elongation at break, tensile strength, compression set and stress relaxation requirement
28、s for materials of hardness categories 80 and 90 apply only when they constitute that part of the seal which participates directly in the sealing function or in long term stability. This standard is not applicable to the following: a) seals made from cellular materials; b) seals with enclosed voids
29、as part of their design; c) seals with requirements of resistance to flame or to thermal stress; d) seals which contain splices joining pre-vulcanized profile ends. 4 EN 682:2002 (E)2 Normative references This European Standard incorporates by dated or undated reference, provisions from other public
30、ations. 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 revisio
31、n. For undated references the latest edition of the publication referred to applies (including amendments). ISO 37, Rubber, vulcanized or thermoplastic Determination of tensile stress strain properties. ISO 48, Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD a
32、nd 100 IRHD). ISO 188:1998, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance tests. ISO 471, Rubber Temperatures, humidities and times for conditioning and testing. ISO 815, Rubber, vulcanized or thermoplastic Determination of compression set at ambient, elevated or low tem
33、peratures. ISO 14311, Rubber, vulcanized or thermoplastic Resistance to ozone cracking Part 1: static strain test. ISO 1817, Rubber, vulcanized Determination of the effect of liquids. ISO 28591, Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality
34、 limit (AQL) for lot-by-lot inspection. ISO 33021, Rubber Tolerances for products Part 1: Dimensional tolerances. ISO 3384:1999, Rubber, vulcanized or thermoplastic Determination of stress relaxation in compression at ambient and at elevated temperatures. ISO 3951, Sampling procedures and charts for
35、 inspection by variables for percent nonconforming. ISO 46611, Rubber, vulcanized or thermoplastic Preparation of samples and test pieces Part 1: Physical tests. ISO 9691:1992, Rubber Recommendations for the workmanship of pipe joint rings Description and classification of imperfections. 5EN 682:200
36、2 (E)3 Classification Five categories of material for seals are specified in Tables 2 and 3. A nominal hardness shall be specified within the ranges in Table 1. Table 1 - Hardness categories Hardness category 50 60 70 80 90 Range of hardness, IRHD 46 - 55 56 - 65 66 - 75 76 - 85 86 - 95 4 Requiremen
37、ts 4.1 Materials The materials shall be free of any substances which can have a deleterious effect on the life of the seals, or on the pipe and fittings. 4.2 Finished seal requirements 4.2.1 Dimensional tolerances Tolerances shall be specified from the appropriate categories in ISO 3302-1. 4.2.2 Imp
38、erfections and defects The seals shall be free of defects or irregularities which could affect their function. Classification of imperfections shall be according to ISO 9691:1992 as follows: - surface imperfections in zones involved in the sealing function as described in 4.1.1 of ISO 9691:1992 shal
39、l be considered as defects; - surface imperfections in zones not involved in the sealing function as described in 4.1.2.1 b) of ISO 9691:1992 shall not be considered as defects. NOTE 1 Major surface imperfections in zones not involved in the sealing function as described in 4.1.2.1 a) ofISO 9691:1992 can be considered as defects. This should be agreed between the interested parties; the acceptance criteria
