1、Designation:C144008(Reapproved 2013)1Standard Specification forThermoplastic Elastomeric(TPE)Gasket Materials for Drain,Waste,and Vent(DWV),Sewer,Sanitary and StormPlumbing Systems1This standard is issued under the fixed designation C1440;the number immediately following the designation indicates th
2、e year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEEditorial changes were made throughout in October 2013.1.Scope1
3、.1 This specification covers thermoplastic elastomeric(TPE)gasket materials for preformed elastomeric gaskets usedin shielded and non-shielded mechanical couplings.Thesecouplings are used in gravity flow drain,waste and vent(DWV),sewer,sanitary and storm plumbing systems.Theyinclude couplings to joi
4、n similar and dissimilar piping sizesand material.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport t
5、o address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2A644 Termino
6、logy Relating to Iron CastingsD395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD471 Test Method for Rubber PropertyEffect of LiquidsD573 Test Method for RubberDeterioration in an AirOvenD624 Test Method for Tear Strength
7、of Conventional Vul-canized Rubber and Thermoplastic ElastomersD1149 Test Methods for Rubber DeteriorationCracking inan Ozone Controlled EnvironmentD1415 Test Method for Rubber PropertyInternationalHardnessD2240 Test Method for Rubber PropertyDurometer Hard-nessD5964 Practice for Rubber IRM 901,IRM
8、902,and IRM903 Replacement Oils forASTM No.1,ASTM No.2,andASTM No.3 Oils3.Terminology3.1 DefinitionsRefer to Terminology A644 for definitionsof the following terms used in this specification elastomer,elastomeric,elongation,gasket,hardness,preformed gasket-(see gasket),thermoplastic elastomer.4.Mate
9、rials and Manufacture4.1 Gaskets shall be made of virgin thermoplastic elasto-meric compound containing only clean reworked thermoplasticelastomer material from the manufacturers own production ofthe same compound.4.2 Where splices are made in the gasket,the strength of thesplice shall be such that
10、the gasket will withstand the stretchtest described in 8.9 with no visible separation or peeling.4.3 Many thermoplastic elastomeric materials(TPE)aretemperature sensitive.Designed operating temperature rangefor the 87 Shore A TPE materials is 0 to 130 F(18 to55C).These materials are not designed or
11、intended forprolonged operation outside this range.5.Physical Properties5.1 Gaskets representative of the manufacturers productionshall be selected as specified in Section 7 and shall conform tothe requirements for physical properties listed in Table 1 whentested in accordance with the methods speci
12、fied in Section 8.6.Workmanship,Finish,and Appearance6.1 The surface of the gasket shall be smooth and free ofpitting,cracks,blisters,air marks,and any other imperfections1This Specification is under the jurisdiction of ASTM Committee A04 on IronCastings and is the direct responsibility of Subcommit
13、tee A04.75 on Gaskets andCoupling for Plumbing and Sewer Piping.Current edition approved May 1,2013.Published May 2013.Originallyapproved in 1999.Last previous edition approved in 2008 as C1440 08.DOI:10.1520/C1440-08R13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact AS
14、TM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 that will affect its behavior in se
15、rvice.The body of the gasketshall be free of porosity and air pockets.6.2 Neither the flash thickness nor the flash extension shallexceed 1/32 in.(0.8 mm),at any point on the ring.6.3 The offset,or failure of the mold to register accurately,shall not exceed 1/64 in.(0.4 mm).7.Sampling7.1 For the str
16、etch test specified in 8.9,sample gaskets shallbe selected at random from each shipment of gaskets.For eachof the other tests,gaskets shall be selected at random asrequired by the method of test specified.8.Test Methods8.1 HardnessTest the gasket material for hardness inaccordance with Test Method D2240.As required,use TestMethod D1415 as the referee method.Make hardness measure-ments on specimens prepared in accordance with 8.2.However,hardness readings for guidance purposes shall betaken direc
