1、Designation: C1440 08 (Reapproved 2013)1C1440 17Standard 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 desig
2、nation indicates the 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.1 NOTEEditorial changes were made throughou
3、t in October 2013.1. Scope1.1 This specification covers thermoplastic elastomeric (TPE) gasket materials for preformed elastomeric gaskets used inshielded and non-shielded mechanical couplings. These couplings are used in gravity flow drain, waste, and vent (DWV), sewer,sanitary, and storm plumbing
4、systems. They include couplings to join similar and dissimilar piping sizes and material.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered sta
5、ndard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitat
6、ions prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Techni
7、cal Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A644 Terminology Relating to Iron CastingsD395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplastic ElastomersTensionD471 Test Method for Rubber PropertyEffect of Liqu
8、idsD573 Test Method for RubberDeterioration in an Air OvenD624 Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic ElastomersD1149 Test Methods for Rubber DeteriorationCracking in an Ozone Controlled EnvironmentD1415 Test Method for Rubber PropertyInternational Hardness
9、D2240 Test Method for Rubber PropertyDurometer HardnessD5964 Practice for Rubber IRM 901, IRM 902, and IRM 903 Replacement Oils for ASTM No. 1, ASTM No. 2, ASTM No. 3Oils, and IRM 905 formerly ASTM No. 5 Oil3. Terminology3.1 DefinitionsRefer to Terminology A644 for definitions of the following terms
10、 used in this specificationspecification:elastomer, elastomeric, elongation, gasket, hardness, preformed gasket-(see gasket), thermoplastic elastomer.4. Materials and Manufacture4.1 Gaskets shall be made of virgin thermoplastic elastomeric compound containing only cleancompound, where the primaryela
11、stomer is a thermoplastic vulcanizate containing only clean, reworked thermoplastic elastomer material from themanufacturersmanufacturers own production of the same compound.1 This Specificationspecification is under the jurisdiction of ASTM Committee A04 on Iron Castings and is the direct responsib
12、ility of Subcommittee A04.75 on Gasketsand Coupling for Plumbing and Sewer Piping.Current edition approved May 1, 2013Nov. 15, 2017. Published May 2013November 2017. Originally approved in 1999. Last previous edition approved in 20082013 asC1440 08.C1440 08 (2013)1. DOI: 10.1520/C1440-08R13.10.1520/
13、C1440-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intende
14、d only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current
15、versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.2 Where splices are made in the gasket, the strength of the splice shall be such that the gasket w
16、ill withstand the stretch testdescribed in 8.9 with no visible separation or peeling.4.3 Many thermoplastic elastomeric materials (TPE)(TPEs) are temperature sensitive. Designed operating temperature range forthe 8790 Shore A TPE materials is 0 to 130 F (18 to 55C).0 to 130 F (18 to 55 C). These mat
17、erials are not designed orintended for prolonged operation outside this range.5. Physical Properties5.1 Gaskets representative of the manufacturers production shall be selected as specified in Section 7 and shall conform to therequirements for physical properties listed in Table 1 when tested in acc
18、ordance with the methods specified in Section 8.6. Workmanship, Finish, and Appearance6.1 The surface of the gasket shall be smooth and free of pitting, cracks, blisters, air marks, and any other imperfections thatwill affect its behavior in service. The body of the gasket shall be free of porosity
19、and air pockets.6.2 Neither the flash thickness nor the flash extension shall exceed 1/32132 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 1/64164 in. (0.4 mm).7. Sampling7.1 For the stretch test specified in 8.9, sample gasket
20、s shall be selected at random from each shipment of gaskets. For each ofthe other tests, gaskets shall be selected at random as required by the method of test specified.8. Test Methods8.1 HardnessTest the gasket material for hardness in accordance with Test Method D2240. As required, use Test Method
21、D1415 as the referee method. Make hardness measurements on specimens prepared in accordance with 8.2. However, hardnessreadings for guidance purposes shall be taken directly on the gasket, recognizing that these shall be permitted to vary slightly fromthose taken on the dumbbell specimens.TABLE 1 Ph
22、ysical Requirements of Gasket MaterialsProperties Tested ASTM TestMethod TPEAHardness, Shore A (5 pts) D2240 87 (5 s Delay)Hardness, Shore A (5 pts) D2240 90 (5 s Delay)Elongation, min, % D412 250Tensile Strength, min. psi (kPa) D412 1500 (10 342)Tensile Strength, min, psi (kPa) D412 1500 (10 342)He
23、at Aging D57396 h at 158 4F (70 2C)96 h at 158 4 F (70 2 C)Hardness increase, max, pts. Shore A 10Loss in tensile strength, max, % 15Loss in elongation, max, % 20Tear Strength, min. lbf/in (N/cm) D624 150(268)Tear Strength, min, lbf/in (N/cm) D624 150 (268)Water Absorption D4717 days at 158 4F (70 2
24、C)7 days at 158 4 F (70 2 C)Weight increase, max, % 20Ozone Resistance D1149 No cracks100 h at 104 4F (40 2C)100 h at 104 4 F (40 2 C)Ozone Concentration 150 pphm20 % ExtensionCompression Set, max % D395 12Compression Set, max, % D395 1222 h at 158 2F (70 1C) Method A22 h at 158 2 F (70 1 C) Method
25、AOil Immersion in IRM 903 Oil D47170 h at 212 4F (100 2C)70 h at 212 4 F (100 2 C)Max Volume Increase, % 80Max Volume Decrease, % 15ADesigned operating temperature for Shore A TPE materials is 00 to 130F(18130 F (18 to 55C).55 C). These materials are not designed or intendedfor prolonged operation o
26、utside this range.C1440 1728.2 Elongation and Tensile StrengthTest the gasket material for elongation and tensile strength in accordance with TestMethodMethods D412. Cut standard ASTM Type C dumbbell specimens conforming to Fig. 1 (Apparatus for Tensile Set Test) ofTest MethodMethods D412 from secti
27、ons of the gasket for this test. To obtain a uniform thickness, these sections shall be permittedto be buffed prior to cutting into dumbbell specimens, so as to produce a finely ground surface without cuts or burns.8.3 Tear StrengthTest the gasket material for tear strength in accordance with Test M
28、ethod D624 using Die C.8.4 Compression SetTest the gasket material for compression set using Test MethodMethods D395. For materials with ahardness of 90 IRHD or higher MethodAmust be used. For materials with a hardness less than 90 IRHD Method B must be used.Oven age samples for 22 h at 158158 6 2F2
29、 F (70 6 1C). When using Test Method A, 1 C). Test Method A shall be used,and there shall be a maximum dimensional change of 12 %. WhenSee Table 1using Test Method B, there shall be a maximumdimensional change of 25 %8.5 Heat AgingTest the gasket material for heat aging in accordance withTest Method
30、 D573. Prepare specimens in accordancewith 8.2, and for 96 h at 158 6 4F4 F (70 6 2 C). 2 C). Make hardness measurements as specified in 8.1.8.6 Water AbsorptionTest the gasket material for weight increase due to water absorption in accordance with Test MethodD471. If a 1 in. (25.4 mm) 1-in. (25.4-m
31、m) specimen cannot be cut from the sample gasket, use the greatest width obtainable.Immerse the test specimen in distilled water at 158 6 4F4 F (70 6 2C)2 C) for seven days.8.7 Ozone ResistanceTest the gasket material for ozone resistance in accordance with Test MethodMethods D1149, usingspecimens a
32、nd procedure specified under Method B. The ozone concentration shall be 150 pphm of air by volume.Age specimens100 h at 104 6 4F4 F (40 6 2C)2 C) with a 20 % extension. Use a two-power hand magnification glass to examine thegasketgasket.8.8 Oil ImmersionTest the gasket material for volume decrease d
33、ue to oil absorption in accordance with Test Method D471.If a 1-in. (25.4 mm) (25.4-mm) specimen cannot be cut from the sample gasket, use the greatest width obtainable. The testspecimen shall be immersed in IRM 903 oil for 70 h at 212 6 4F4 F (100 6 2C).2 C).8.9 Stretch Test for Spliced GasketsStre
34、tch gaskets until the circumference is increased by 50 %, then visually inspect fordefects as described in 4.2 and 6.1. One percent of the total spliced gaskets shall be tested with no failures.9. Certification9.1 When specified in the purchase order or contract, the purchaser shall be furnished cer
35、tification stating samples representingeach lot have been tested and inspected as indicated in this specification and the requirements have been met. When specified inthe purchase order or contract, a report of the test results shall be furnished.10. Marking10.1 Each gasket shall be permanently mark
36、ed with clearly legible letters. These markings shall include the gasketmanufacturers name or registered trademark, the pipe size and class, the country of origin, and the ASTM standard specificationdesignation.C1440 173ASTM International takes no position respecting the validity of any patent right
37、s asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any t
38、ime by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will
39、receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM
40、International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 174
