1、Designation: D5926 11An American National StandardStandard Specification forPoly (Vinyl Chloride) (PVC) Gaskets for Drain, Waste, andVent (DWV), Sewer, Sanitary, and Storm Plumbing Systems1This standard is issued under the fixed designation D5926; the number immediately following the designation ind
2、icates 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. Scope1.1 This specification describes material and
3、 physical re-quirements for nonrigid poly (vinyl chloride) (PVC) preformedmolded and spliced gaskets used in mechanical couplings.These couplings are used in gravity flow drain, waste, and vent(DWV), sewer, sanitary, and storm plumbing systems. Theyinclude couplings to join similar and dissimilar pi
4、ping sizesand piping material.1.2 It is acceptable to use recycled materials in this productin accordance with the requirements in Section 4.1.3 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provi
5、ded for information onlyand are not considered standard.NOTE 1There is no known ISO equivalent to this standard.1.4 The following safety hazards caveat pertains only to thetest method portion, Section 7, of this specification: Thisstandard does not purport to address all of the safety concerns,if an
6、y, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2C717 Terminology of Building Seals and SealantsD412
7、Test Methods for Vulcanized Rubber and Thermo-plastic ElastomersTensionD471 Test Method for Rubber PropertyEffect of LiquidsD573 Test Method for RubberDeterioration in an AirOvenD618 Practice for Conditioning Plastics for TestingD624 Test Method for Tear Strength of Conventional Vul-canized Rubber a
8、nd Thermoplastic ElastomersD746 Test Method for Brittleness Temperature of Plasticsand Elastomers by ImpactD883 Terminology Relating to PlasticsD1149 Test Methods for Rubber DeteriorationCrackingin an Ozone Controlled EnvironmentD1203 Test Methods for Volatile Loss From Plastics UsingActivated Carbo
9、n MethodsD1600 Terminology for Abbreviated Terms Relating toPlasticsD2240 Test Method for Rubber PropertyDurometerHardnessD2287 Specification for Nonrigid Vinyl Chloride Polymerand Copolymer Molding and Extrusion CompoundsD3892 Practice for Packaging/Packing of PlasticsD4968 Guide for Annual Review
10、of Test Methods andSpecifications for PlasticsD6147 Test Method for Vulcanized Rubber and Thermo-plastic ElastomerDetermination of Force Decay (StressRelaxation) in CompressionD7209 Guide for Waste Reduction, Resource Recovery, andUse of Recycled Polymeric Materials and Products3. Terminology3.1 Gen
11、eralDefinitions are in accordance with Termi-nologies C717, D883, and D1600, unless otherwise indicated.3.2 Definitions of Terms Specific to This Standard:3.2.1 flashthe excess material protruding from the surfaceof a molded article at the mold junction.4. Materials and Manufacture4.1 This specifica
12、tion covers preformed gaskets made prin-cipally from virgin nonrigid PVC molding compound conform-ing to the requirements of Specification D2287 for generalpurpose, electrical requirements excluded class PVC 30267,40366 or 50465. Refer to Table 1 in Specification D2287.1This specification is under t
13、he jurisdiction of ASTM Committee D20 onPlastics and is under the direct responsibility of Subcommittee D20.24 on PlasticBuilding Products.Current edition approved Aug. 1, 2011. Published August 2011. Originallyapproved in 1996. Last previous edition approved in 2004 as D5926-04. DOI:10.1520/D5926-1
14、1.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Bo
15、x C700, West Conshohocken, PA 19428-2959, United States.4.1.1 This class compound has the following material prop-erty requirements:4.2 The molding compound shall have a minimum percentelongation by Test Method D412 of 250 %.4.3 The molding compound shall have a minimum tearstrength by Test Method D
16、624 of 150 lb/in. (268.5 N/cm).4.4 Recycled materials, as defined in Guide D7209, shallmeet all the requirements in Sections 4 and 5 when used in thisproduct.4.5 Qualification testing for material physical requirementsshall be conducted by the material manufacturer on the specificcompound supplied a
17、nd not on the molded gaskets, since thephysical properties do not change on molding.NOTE 2The material manufacturer shall reassess the need for requali-fication of the specific compound supplied any time the compoundformulation is changed or the PVC resin or any compound ingredient ischanged.4.6 The
18、 compound manufacturer shall certify in writing tothe gasket manufacturer that the compound supplied meets allthe requirements of this specification.5. Requirements5.1 DimensionsGaskets shall conform to the dimensionsand dimensional tolerances as agreed upon between the sup-plier and the purchaser.
19、All dimensions shall be compatiblewith the dimensions and tolerances of the specific pipingmaterials and sizes to which it is designed to join.5.2 Spliced Gaskets, Stretch Test The splice shall with-stand the splice test in 7.1 with no visible separation or peeling.5.2.1 The observance of any peelin
20、g or separation in aspliced seam shall be followed by immediate correction of thetemperature/time functions in the heat welding operation.5.3 Gaskets selected for sampling (6.1) shall meet alldimensional requirements (5.1) and workmanship require-ments (5.4).5.4 Workmanship:5.4.1 The surface of pref
21、ormed gaskets shall be smooth andfree from pitting, cracks, blisters, air marks, or any otherimperfections that have the potential to affect product perfor-mance in service.5.4.2 Neither the flash thickness nor the flash extensionshall exceed132 in. (1 mm).6. Sampling6.1 Sample using a statistically
22、 acceptable procedure.6.2 A shift of production on a molding line shall beconsidered as a unit of manufacture for sampling purposes.6.3 Spliced gasket production shall be sampled at a level of100 % of total spliced units produced during the trimming andinspection operation.TABLE 1 Material Property
23、RequirementsProperties Tested ASTM Method RequirementDurometer hardness, AscaleTest Method D2240 55 to 64 65 to 74 75 to 84Tensile strength, min, psi(MPa)Test Method D412 1000 (8.9) 1285 (8.8) 1575 (10.8)Volatile loss at 105C, max.%Test Method D1203 6.0 6.0 6.0Brittleness temperature, max Test Metho
24、d D746 40C 30C 20CHeat Aging : Test Method D573Hardness increase, max,pts. Shore A10 10 10Loss in tensile strength,max, %25 25 25Loss in elongation, max,%35 35 35Water Absorption, Weightincrease,max, %Test Method D471 20 20 20Ozone Resistance, NoCracks at 2 timesMagnificationTest Method D1149 No Cra
25、cks No Cracks No CracksOil Immersion in IRM 903Oil:Test Method D471Max volume increase, % 10 10 10Max volume decrease, % 50 50 50Tear Strength, min, lbf/in.(N/cm)Test Method D624 150 150 150Stress Relaxation, Min. %Force RetentionTest Method D6147 30 30 30D5926 1127. Test Methods7.1 Spliced Gasket S
26、tretch TestGasket specimens shall bestretched during the seam trimming operation by inverting thespliced section 180, while carefully inspecting the seam forseparation and peeling and the seam area for workmanshipimperfections (5.4.1).7.2 The physical properties enumerated herein shall bedetermined
27、on the non-rigid PVC compound in accordancewith the following methods:7.2.1 Test SpecimensUnless otherwise specified, testspecimens shall be prepared of sheets 0.075 6 0.010 in.(1.9 6 0.2 mm) thick. Specimens shall be of the shape anddimensions specified in the individual test methods.7.2.2 Conditio
28、ningTest specimens of non-rigid PVC plas-tics shall be conditioned in accordance with Procedure A ofPractice D618.7.2.3 Unless otherwise specified, tests shall be conducted inthe standard laboratory atmosphere of 23 6 2C (73 6 4F)and 50 6 10 % relative humidity.7.2.4 Durometer HardnessTest Method D2
29、240 using a 15s interval as described in 9.2 of that method.7.2.5 Tensile Strength and Percent ElongationTest Meth-ods D412, using specimens prepared with Die C.7.2.6 Volatile LossTest Method D1203 using Method A,except that the test temperature shall be 105C.7.2.7 Brittleness TemperatureTest Method
30、 D746, usingProcedure A.7.2.8 Tear StrengthTest Method D624, using Die C.7.2.9 Heat AgingTest Method D573 for96hat706 2C(158 6 4F).7.2.10 Water AbsorptionTest Method D471 for 7 days at70 6 2C (158 6 4F).7.2.11 Ozone ResistanceTest Method D1149, using testspecimen A for 100 h at 40 6 2C (104 6 4F) wi
31、th ozoneconcentration of 1.5 ppm.7.2.12 Oil ImmersionTest Method D471 for 70 h at100 6 2C (212 6 4F).7.2.13 Stress RelaxationTest Method D6147, usingMethod B, and test specimen as defined in section 7.1.2 ofD6147. The test temperature and duration shall be 168 h at23 6 2C (73 6 4F).8. Certification8
32、.1 The gasket manufacturer shall keep appropriate produc-tion and testing records, including certification documentationfrom the PVC compound producer, required to certify, whenrequested by the purchaser, that the product meets all require-ments of this specification.9. Product Marking9.1 Each gaske
33、t shall be marked with the manufacturersname or trademark, or both.9.2 The type and size of pipe for which the gasket isintended or the manufacturers product identification shall bemarked on or attached to each gasket.9.3 All gaskets shall be marked with the designation ASTMD5926 showing compliance
34、to this specification.10. Packaging and Package Marking10.1 PackagingThe gaskets shall be packaged in standardcommercial containers so constructed as to ensure acceptanceby common or other carriers for safe transportation at thelowest rate to the point of delivery, unless otherwise specifiedin the c
35、ontract or order.10.2 All packing, packaging, and marking provisions ofPractice D3892 shall apply to this specification.11. Keywords11.1 DWV piping gaskets; pipe couplings; plumbing gas-kets; poly(vinyl chloride) (PVC); recycle usage; sanitary pip-ing gaskets; sewer piping gaskets; storm piping gask
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37、are entirely their own responsibility.This standard is subject to revision at any time 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 stan
38、dardsand should be addressed to ASTM International Headquarters. Your comments will 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 Comm
39、ittee on Standards, at the address shown below.This standard is copyrighted by ASTM 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 ASTM website (www.astm.org/COPYRIGHT/).D5926 113
