1、Designation: C 564 03aEndorsed by theCast Iron Soil Pipe InstituteStandard Specification forRubber Gaskets for Cast Iron Soil Pipe and Fittings1This standard is issued under the fixed designation C 564; the number immediately following the designation indicates the year oforiginal adoption or, in th
2、e 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This
3、 specification covers preformed rubber gaskets usedto seal joints in cast iron soil pipe and fittings.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 The following safety hazards caveat pertains only to thetest methods
4、section of this specification: This standard doesnot purport to address all of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations prior
5、to use.1.4 The committee with jurisdiction over this standard is notaware of another comparable standard for materials covered inthis standard.2. Referenced Documents2.1 ASTM Standards:2C 717 Terminology of Building Seals and SealantsD 395 Test Methods for Rubber PropertyCompressionSetD 412 Test Met
6、hods for Vulcanized Rubber and Thermo-plastic Rubbers and Thermoplastic ElastomersTensionD 471 Test Method for Rubber PropertyEffect of LiquidsD 573 Test Method for RubberDeterioration in an AirOvenD 624 Test Method for Tear Strength of ConventionalVulcanized Rubber and Thermoplastic ElastomersD 114
7、9 Test Method for Rubber DeteriorationSurfaceOzone Cracking in a ChamberD 1415 Test Method for Rubber PropertyInternationalHardnessD 2240 Test Method for Rubber PropertyDurometerHardness2.2 Other DocumentsRMA Class 3 Dimensional Tolerances, RMA Manual33. Terminology3.1 DefinitionsFor definitions of
8、terms in this standard seeTerminology C 717.3.2 Definitions of Terms Specific to This Standard:3.2.1 flashthe excess material protruding from the surfaceof a molded article at the mold junction.3.2.2 virgin rubber, na term that may be used inter-changeably with raw rubber (raw thermoset elastomer).
9、Arubber or thermoset elastomer that has not had any additionalwork, diluents incorporated, processes performed on it, or anycombination thereof. A rubber that is in an unmodified state orone in which no attempt has been made to alter it in any fashionas received from the manufacturer or supplier.4.
10、Materials and Manufacture4.1 Gaskets shall be made of a properly vulcanized virgincompound containing virgin rubber as the sole elastomer withno scrap or reclaim.5. Physical Requirements Physical Requirements5.1 Sample gaskets selected as specified in Section 8 shallconform to the requirements for p
11、hysical properties listed inTable 1 when tested in accordance with the methods specifiedin Section 9.6. Dimensions and Permissible Variations6.1 Gaskets shall conform to the dimensions specified bythe manufacturer.6.2 All cross-sectional dimensions shall have an RMAClass3 tolerance as shown in Annex
12、 A1, and all diametral dimen-sions shall have a tolerance of 6 1 percent.1This specification is under the jurisdiction of ASTM Committee A04 on IronCastings and is the direct responsibility of Subcommittee A04.75 on Gaskets andCouplings for Plumbing and Sewer Piping.Current edition approved Dec. 1,
13、2003. Published January 2004. Originallyapproved in 1965. Last previous edition approved in 2003 as C56403.2For 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 stand
14、ards Document Summary page onthe ASTM website.3Rubber Manufacturers Association, 1400 K Street NW, No. 900, Washington,DC 20005 2455.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7. Workmanship7.1 The surface of the gasket shall be
15、 smooth and free ofpitting, cracks, blisters, air marks, and any other imperfectionsthat will affect its behavior in service. The body of the gasketshall be free of porosity and air pockets.7.2 Neither the flash thickness nor the flash extension shallexceed 0.8 mm (132 in.), at any point on the seal
16、ing ring.7.3 The offset, or failure of the mold to register accurately,shall not exceed 0.4 mm (164 in.).8. Sampling8.1 For each of the tests, gaskets shall be selected at randomas required by the method of test specified.9. Test Methods9.1 HardnessThe gasket material shall be tested forhardness in
17、accordance with ASTM Test Method D 2240. TestMethod D 1415 shall be used as the referee method. Hardnessmeasurements shall be made on specimens prepared in accor-dance with 9.2. However, hardness readings for guidancepurposes shall be permitted to be taken directly on the gasket,recognizing that the
18、se readings may vary slightly from thosetaken on the dumb-bell specimens.9.2 Elongation and Tensile StrengthThe gasket materialshall be tested for elongation and tensile strength in accordancewith Test Methods D 412. Standard ASTM Type C dumb-bellspecimens conforming to Fig. 1 (Apparatus for Tensile
19、 SetTest) of Test Methods D 412 shall be cut from a section of thegasket for this test. To obtain a uniform thickness, these gasketsections shall be permitted to be buffed prior to cutting intodumb-bell specimens, so as to produce a finely ground surfacewithout cuts or burns.9.3 Tear Strength The ga
20、sket material shall be tested fortear strength in accordance with Test Method D 624 using DieC.9.4 Compression Set The gasket material shall be testedfor compression set in accordance with Test Methods D 395using Method B. Specimens shall be aged in an oven for 22 hat 70 6 1C (158 6 2F). Where plied
21、 specimens arenecessary, the results shall comply with the requirements ofTable 1.9.5 Heat AgingThe gasket material shall be tested foreffects of heat aging in accordance with 9.2, and shall be agedfor96hat706 1C (158 6 2F). Hardness measurementsshall be made as specified in 9.1.9.6 Water Absorption
22、The gasket material shall be testedfor weight increase due to water absorption in accordance withTest Method D 471. If a 25.4-mm (1-in.) specimen cannot becut from the sample gasket, the greatest width obtainable shallbe used. The test specimen shall be immersed in distilled waterat 70 6 1C (158 6 2
23、F) for 7 days.9.7 Ozone ResistanceThe gasket material shall be testedfor ozone resistance in accordance with Test Method D 1149,using specimens and procedure specified under Method B. Theozone concentration shall be 150 parts/100 000 000 of air byvolume. Specimens shall be aged 100 6 1h at 40 6 1C (
24、1046 2F). A two-power hand magnifying glass shall be used toexamine the gasket for cracks.9.8 Oil Immersion The gasket material shall be tested forvolume decrease due to oil absorption in accordance with TestMethod D 471. If a 25.4 mm (1-in.) specimen cannot be cutfrom the sample gasket, the greates
25、t width obtainable shall beused. The test specimen shall be immersed in IRM 903 for 706 0.7 h at 100 6 1C (212 6 2F).10. Certification10.1 When specified in the purchase order or contract, thepurchaser shall be furnished certification stating samples rep-resenting each lot have been tested and inspe
26、cted as indicatedin this specification and the requirements have been met. Whenspecified in the purchase order or contract, a report of the testresults shall be furnished.11. Marking11.1 Mark each gasket with clearly legible letters notexceeding 6.35 mm (14 in.) in height. These markings shallinclud
27、e the gasket manufacturers name or symbol, the pipesize and class (such as NH for no hub, SV for service, XH forextra heavy), country of origin and the ASTM specificationdesignation. Rubber Compression gaskets shall be required tohave the year of manufacture in addition to the other requiredmarkings
28、 of this section.TABLE 1 Physical Requirements of GasketsProperty Requirements ASTM Test MethodHardness (nominal durometer 65) as specified by thepipe manufacturer50 60 70 D 2240Elongation, min, % 350 300 250 D 412Tensile strength, min, MPa 10 10 10 D 412(psi) (1500) (1500) (1500)Tear strength, min,
29、 N/cm 268 268 268 D 624(lbf/in.) (150) (150) (150)Compression set, max, % 25 25 25 D 395Heat aging, 96 h at 70 6 1C (158 6 2F): D 573Hardness increase, max, durometer points 10 10 10 .Loss in tensile strength, max,% 15 15 15 .Loss in elongation, max, % 20 20 20 .Water absorption: D 471Weight increas
30、e, max, % 20 20 20 .Ozone resistance no cracks no cracks no cracks D 1149Oil immersion:Volume increase, max, % 80 80 80 D 471C 564 03a212. Keywords12.1 cast iron; fittings; gaskets; pipe; rubberANNEX(Mandatory Information)A1. RUBBER MANUFACTURERS ASSOCIATION, INC. TOLERANCESSee Table A1.1.ASTM Inter
31、national 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
32、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 standardsand shou
33、ld 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 Committee on Stan
34、dards, 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-
35、832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE A1.1 RMA Class 3 Dimensional Tolerances (Commercial Tolerances)Size, mm, (in.) FixedAClosureB,C0 to 12.67 (0 to 0.499) 60.254 (60.010) 60.381 (60.015)12.7 to 25.37 (0.500 to 0.999) 60.2
36、54 (60.010) 60.457 (60.018)24.4 to 50.77 (1.000 to 1.999) 60.381 (60.015) 60.508 (60.020)50.8 to 76.17 (2.000 to 2.999) 60.508 (60.020) 60.635 (60.025)76.2 to 101.57 (3.000 to 3.999) 60.635 (60.025) 60.762 (60.030)101.6 to 126.97 (4.000 to 4.999) 60.762 (60.030) 60.889 (60.035)127.0 to 203.17 (5.000
37、 to 7.999) 60.889 (60.035) 61.27 (60.050)Greater than 203.2 (Greater than 8.000) multiply by 1.27 (0.0050)AFixed dimensions are those that are parallel to the mold parting line or major mold sections and that are not affected by flash thickness variations. Tolerances applyindividually to each fixed
38、dimension according to its own size.BClosure dimensions are those vertical to the mold parting line or parting lines of major sections and are affected by flash thickness variation.CThe tolerance on closure dimensions is that tolerance for the largest closure dimension. This tolerance is then applied to all other closure dimensions.C 564 03a3
