1、Designation: D 5926 04An 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 D 5926; the number immediately following the designation i
2、ndicates 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 (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification describes material
3、 and 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 dissimila
4、r piping sizesand piping material.1.2 Recycled materials may be used in this product inaccordance with the requirements in Section 4.1.3 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are given forinformation only.NOTE 1There are no ISO stand
5、ards covering the primary subjectmatter of this specification.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 any, associated with its use. It is the responsibili
6、ty 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:2C 717 Terminology of Building Seals and SealantsD 412 Test Methods for Vulcanized Rubber and Thermo-pl
7、astic Rubbers and Thermoplastic Elastomers-TensionD 471 Test Method for Rubber PropertyEffect of LiquidsD 573 Test Method for RubberDeterioration in an AirOvenD 618 Practice for Conditioning Plastics and ElectricalInsulating Materials for TestingD 624 Test Method for Tear Strength of ConventionalVul
8、canized Rubber and Thermoplastic ElastomersD 746 Test Method for Brittleness Temperature of Plasticsand Elastomers by ImpactD 883 Terminology Relating to PlasticsD 1149 Test Method for Rubber DeteriorationSurfaceOzone Cracking in a ChamberD 1203 Test Methods for Volatile Loss from Plastics UsingActi
9、vated Carbon MethodD 1600 Terminology for Abbreviated Terms Relating toPlasticsD 1898 Practice for Sampling of PlasticsD 2240 Test Method for Rubber PropertyDurometerHardnessD 2287 Specification for Nonrigid Vinyl Chloride Polymerand Copolymer Molding and Extrusion CompoundsD 3892 Practice for Packa
10、ging/Packing of PlasticsD 5033 Guide for the Development of Standards Relating tothe Proper Use of Recycled PlasticsD 6147 Test Method for Vulcanized Rubber and Thermo-plastic ElastomerDetermination of Force Decay (StressRelaxation) in Compression3. Terminology3.1 GeneralDefinitions are in accordanc
11、e with Termi-nologies C 717, D 883 and D 1600, 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 specification covers preformed gaskets
12、made prin-cipally from virgin nonrigid PVC molding compound conform-ing to the requirements of Specification D 2287 for generalpurpose, electrical requirements excluded class PVC 30267,40366 or 50465. Refer to Table 1 in Specification D 2287.4.1.1 This class compound has the following material prop-
13、erty requirements:1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is under the direct responsibility of Subcommittee D20.24 on PlasticBuilding Products.Current edition approved Oct. 1, 2004. Published November 2004. Orginallyapproved in 1996. Last previous edition
14、approved in 2001 as D5926-01.2For 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.1*A Summary of Changes section a
15、ppears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.2 The molding compound shall have a minimum percentelongation by Test Method D 412 of 250 %.4.3 The molding compound shall have a minimum tearstrengt
16、h by Test Method D 624 of 150 lb/in. (268.5 N/cm).4.4 Recycled materials, as defined in Guide D 5033, may beused in this product if all the requirements in Sections 4 and 5are met by the recycle material.4.5 Qualification testing for material physical requirementsshall be conducted by the material m
17、anufacturer on the specificcompound supplied and 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 resi
18、n or any compound ingredient ischanged.4.6 The 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
19、upon between the sup-plier and the purchaser. 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
20、 or peeling.5.2.1 The observance of any peeling 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 (
21、5.4).5.4 Workmanship:5.4.1 The surface of preformed gaskets shall be smooth andfree from pitting, cracks, blisters, air marks, or any otherimperfections that may affect product performance in service.5.4.2 Neither the flash thickness nor the flash extensionshall exceed132 in. (1 mm).6. Sampling6.1 S
22、ampling shall be in accordance with Practice D 1898.6.2 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 operat
23、ion.7. Test Methods7.1 Spliced Gasket Stretch 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 propertie
24、s enumerated herein shall bedetermined 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 6TABLE 1 Material Property RequirementsProperties Tested ASTM Method Requireme
25、ntDurometer hardness, AscaleTest Method D 2240 55 to 64 65 to 74 75 to 84Tensile strength, min, psi(MPa)Test Method D 412 1000 (8.9) 1285 (8.8) 1575 (10.8)Volatile loss at 105C, max.%Test Method D 1203 6.0 6.0 6.0Brittleness temperature, max Test Method D 746 40C 30C 20CHeat Aging : Test Method D 57
26、3Hardness 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 D 471 20 20 20Ozone Resistance, NoCracks at 2 timesMagnificationTest Method D 1149 No Cracks No Cracks No CracksOil Immersion in IRM
27、903Oil:Test Method D 471Max volume increase, % 10 10 10Max volume decrease, % 50 50 50Stress Relaxation, Min. %Force RetentionTest Method D 6147 30 30 30D 5926 0420.2 mm) thick. Specimens shall be of the shape and dimensionsspecified in the individual test methods.7.2.2 ConditioningTest specimens of
28、 non-rigid PVC plas-tics shall be conditioned in accordance with Procedure A ofPractice D 618.7.2.3 Unless otherwise specified, tests shall be conducted inthe standard laboratory atmosphere of 23 6 2C (73.4 63.6F) and 50 6 5 % relative humidity.7.2.4 Durometer HardnessTest Method D 2240 using a15 s
29、interval as described in 9.2 of that method.7.2.5 Tensile Strength and Percent ElongationTest Meth-ods D 412, using specimens prepared with Die C.7.2.6 Volatile LossTest Method D 1203 using Method A,except that the test temperature shall be 105C.7.2.7 Brittleness TemperatureTest Method D 746, usingP
30、rocedure A.7.2.8 Tear StrengthTest Method D 624, using Die C.7.2.9 Heat AgingTest Method D 573 for 96 h at 70 6 2C(158 6 4F).7.2.10 Water AbsorptionTest Method D 471 for 7 days at70 6 2C (158 6 4F).7.2.11 Ozone ResistanceTest Method D 1149, using testspecimen A for 100 h at 40 6 2C (104 6 4F) with o
31、zoneconcentration of 1.5 ppm.7.2.12 Oil ImmersionTest Method D 471 for 70 h at 1006 2C (212 6 4F).7.2.13 Stress RelaxationTest Method D 6147, usingMethod B, and test specimen as defined in section 7.1.2 ofD 6147. The test temperature and duration shall be 168 h at 236 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 gasket
33、 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 ASTMD 5926 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 D 3892 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 gas
36、ketsSUMMARY OF CHANGESCommittee D20 has identified the location of seclected changes to this standard since the last issue D592601,that may impact this standard. (Approved Oct. 1, 2004).(1) Added material classifications, Table 1. (2) Removed requirement for specific gravity, 7.2.5.ASTM Internationa
37、l takes no position respecting the validity of any patent rights 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 o
38、wn 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 standardsand should be a
39、ddressed 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 Committee on Standards,
40、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).D 5926 043
