1、Designation: E 1069 85 (Reapproved 2003)Standard Test Method forTesting Polymeric Seal Materials for Geothermal and/orHigh Temperature Service Under Sealing Stress1This standard is issued under the fixed designation E 1069; the number immediately following the designation indicates the year oforigin
2、al 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. Scope1.1 This test method covers the initial evaluation of (screen-ing) p
3、olymeric materials for seals under static sealing stressand at elevated temperatures.1.2 This test method applies to geothermal service only ifused in conjunction with Test Method E 1068.21.3 The test fluid is distilled water.1.4 The values stated in SI units are to be regarded as thestandard.1.5 Th
4、is standard does not purport to 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 Documen
5、ts2.1 ASTM Standards:2D 1414 Test Methods for Rubber O-RingsD 1068 Test Methods for Iron in Water2.2 SAE Standard:ANSI/SAE AS568A Aerospace Size Standard for O-Rings33. Summary of Test Method3.1 Standard o-ring specimens are tested in a test fixture thathas a closely controlled extrusion gap.3.2 Tem
6、perature is applied to the test fixture, with testspecimens, and then pressure is applied.3.3 The test fluid is distilled water.3.4 Test pressure and temperature are maintained untilspecimen seal leaks or until the end of prescribed duration.3.5 More than one specimen may be tested at one time in th
7、efixture.4. Significance and Use4.1 Static seal failures are predominately due to incompat-ibility with media, degradation by temperature extremes, andextrusion stress. This test method may be used for relativeperformance evaluation screening, and is normally the secondstage of the screening process
8、 after immersion testing inaccordance with Test Method E 1068.4.2 This test method shows relative performance of materi-als under the combined effects of temperature, pressure, andextrusion stress. It does not necessarily correlate with actualservice conditions. This test method is not intended to i
9、ncludethe effect of test media.4.3 Avariety of test parameter combinations are provided sothat evaluations can be made for a specific application.4.4 This test method uses standard o-rings as test specimens.5. Apparatus5.1 Test Fixture, is shown in Fig. 1.5.2 The apparatus shall include an oven for
10、heating the testfixture to a controlled temperature as selected.5.2.1 The oven should be protected from damage by testfluid leakage due to seal failure.5.3 Safety Controls, shall be provided to protect the testfixture from overpressure and overheating.5.4 Fixture Rings, should all provide the same c
11、learance gapfor any specific test.5.5 Standard clearance gaps are given in Table 1.6. Test Fluid6.1 The test fluid is distilled water.7. Test Temperature7.1 The test temperature shall be one selected from Table 2.1This test method is under the jurisdiction of ASTM Committee E44 on Solar,Geothermal a
12、nd OtherAlternative Energy Sources and is the direct responsibility ofSubcommittee E44.15 on Geothermal Field Development, Utilization and Materials.Current edition approved March 10, 2003. Published March 2003. Originallyapproved in 1985. Last previous edition approved in 1996 as E 117585(1996)e1.2
13、For 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.3Available from Society of Automotive Engineers, 400 Commonwea
14、lth Dr.,Warrendale, PA 15096.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.8. Test Pressure8.1 The test pressure, 65 %, shall be one selected fromTable 3.9. Test Specimen9.1 Standard specimens are o-rings with a 37.47 mm (1.475in.)
15、 inside diameter and 5.33 mm (0.210 in.) diameter crosssection, as specified in ANSI/SAE AS568 (size dash num-ber 325).9.2 Elastomeric test specimens shall be made to dimensionsand tolerances specified in ANSI/SAE AS568A.9.3 Specimens of materials which have elastic propertiesthat prevent proper sea
16、ling performance in the standard testfixture, may be modified in dimension or shape, or both.9.4 O-Ring seal specimen shall be measured in accordancewith Methods D 1414 and ANSI/ SAE AS568A.10. Test Duration10.1 Test duration shall be as specified in 11.2 or untilfailure, whichever occurs first.10.2
17、 Standard test durations are as follows (0 %, + 2 %): 6,70, and 120 h.10.3 Test duration begins when both the selected tempera-ture and pressure are reached.11. Procedure11.1 Assemble the test apparatus with test specimens.11.2 Completely fill test fixture and apparatus piping withtest fluid. This d
18、isplaces air in the system.11.3 Heat test fixture to the selected temperature. Whileheating, vent excessive pressure build up, but maintain apositive system pressure not to exceed test pressure.11.4 Apply test pressure to the test fixture.11.5 Test duration begins when both the selected tempera-ture
19、 and pressure are reached.11.6 At the end of the test, cool the test fixture to less thanboiling temperature at atmospheric pressure and bleed pressurebefore opening the fixture.12. Report12.1 The report shall include specimen description includ-ing material type and actual dimensions and weight of
20、speci-mens before and after test.12.2 The report shall include the following:12.2.1 Identification of specimen.12.2.2 Test temperature.12.2.3 Test pressure.12.2.4 Test duration, and if failure occurred.12.2.5 Gap dimension that seal bridged.12.2.6 Dates test was run.12.3 The report shall describe th
21、e condition of the specimenat the end of the test according to manual and visual inspection,such features as deformation, weight percent of o-ring extrudedinto gap, discoloration, brittleness, hardness, etc.FIG. 1 Test ApparatusTABLE 1 Standard Clearance Gapsmillimetres inches0.051 6 0.0025 0.002 6
22、0.00010.127 6 0.0051 0.005 6 0.00020.254 6 0.0101 0.010 6 0.00040.381 6 0.0127 0.015 6 0.00050.762 6 0.0127 0.030 6 0.0005TABLE 2 Standard Test TemperatureC F85 6 2 185 6 4100 6 2 212 6 4150 6 2 302 6 4200 6 2 3926 4250 6 2 482 6 4300 6 5 572 6 9350 6 5 662 6 9TABLE 3 Standard Test PressureMPa psia0
23、.69 1001.72 2503.45 5006.89 100013.79 200020.68 300034.47 500068.95 10000103.42 15000E 1069 85 (2003)212.4 The report shall identify the testing organization, anddate of report.13. Precision and Bias13.1 This test method is intended for screening materials foradequacy of strength for an intended app
24、lication. Pressure,temperature, and gap limits may be thus selected for theapplication.13.2 Results are normally pass fail, so they are biased tofailure times less than maximum test duration.13.3 Specimen condition descriptions (see 13.3) are neces-sarily subjective. Precision and bias of the report
25、ed informationshould be judged as such.14. Keywords14.1 extrusion stress; geothermal fluids; geothermal liquids;polymeric seal; polymeric seal material; pressure stress; staticsealing stress; temperature stressASTM International takes no position respecting the validity of any patent rights asserted
26、 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 time by the
27、 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 receive c
28、areful 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 Internati
29、onal, 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).E 1069 85 (2003)3
