ASTM C509-2006 Standard Specification for Elastomeric Cellular Preformed Gasket and Sealing Material《多孔弹性预成型垫片和密封材料标准规范》.pdf

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1、Designation: C 509 06Standard Specification forElastomeric Cellular Preformed Gasket and SealingMaterial1This standard is issued under the fixed designation C 509; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last re

2、vision. 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 specification applies to those elastom

3、eric cellularmaterials of a firm grade that are manufactured in preformedshapes for use as gaskets and for use as sealing materials, in theform of compression seals or gaskets, or both, for glazing otherbuilding joint applications.NOTE 1For softer cellular elastomeric materials used in secondaryseal

4、ing applications, refer to Specification D 1056.1.2 Test Method C 1166, as referenced in this specification,should be used to measure and describe the properties ofmaterials, products, or assemblies in response to heat andflame under controlled laboratory conditions and should not beused to describe

5、 or appraise the fire hazard or fire risk ofmaterials, products, or assemblies under actual fire conditions.However, results of this test may be used as elements of a firerisk assessment which takes into account all of the factorswhich are pertinent to an assessment of the fire hazard of aparticular

6、 end use.1.3 The following precautionary caveat pertains only to thetest method portion, Section 11, of this specification: Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropria

7、te safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.1.4 The committee with jurisdiction over this standard is notaware of any comparable standards published by other orga-nizations.2. Referenced Documents2.1 ASTM Standards:2C 717 Terminology of Build

8、ing Seals and SealantsC 1083 Test Method for Water Absorption of Cellular Elas-tomeric Gaskets and Sealing MaterialsC 1166 Test Method for Flame Propagation of Dense andCellular Elastomeric Gaskets and AccessoriesD 395 Test Methods for Rubber PropertyCompressionSetD 412 Test Methods for Vulcanized R

9、ubber and Thermo-plastic ElastomersTensionD 746 Test Method for Brittleness Temperature of Plasticsand Elastomers by ImpactD 865 Test Method for RubberDeterioration by Heatingin Air (Test Tube Enclosure)D 925 Test Methods for Rubber PropertyStaining of Sur-faces (Contact, Migration, and Diffusion)D

10、1056 Specification for Flexible Cellular MaterialsSponge or Expanded RubberD 1149 Test Method for Rubber DeteriorationSurfaceOzone Cracking in a Chamber3. Terminology3.1 DefinitionsRefer to Terminology C 717 for the fol-lowing terms used in this specification: cellular material,elastomeric, gasket g

11、lazing, seal, and sealing material.4. Materials and Manufacture4.1 Elastomeric cellular materials furnished to this specifi-cation shall be manufactured from natural rubber, syntheticrubber, rubber-like materials, or mixtures of these, with addedcompounding ingredients of such nature and quality tha

12、t, withproper curing, the finished product will comply with thisspecification.4.2 The cured compounds shall be suitable for use whereresistance to sunlight, weathering, oxidation, and permanentdeformation under load are of prime importance.4.3 The manufacturing process shall be such to ensure ahomog

13、eneous cellular material free of defects that may affectserviceability.4.4 Although under this specification the manufacturer ispermitted to choose constituent materials, there is no implica-tion that the several compounds are equivalent in all physicalproperties.Any special characteristics other th

14、an those requiredby this specification, which may be needed for specific1This specification is under the jurisdiction of ASTM Committee C24 onBuilding Seals and Sealants and is the direct responsibility of Subcommittee C24.73on Compression Seal and Lock-Strip Gaskets.Current edition approved May 1,

15、2006. Published May 2006. Originallyapproved in 1963 as C 509 63 T. Last previous edition approved in 2000 asC 509 00.2For 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 t

16、o the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.applications, shall be specified by the purchaser, since suchcharacteristics may influence the choice of base materials andother

17、 ingredients.5. Physical Properties5.1 The material shall conform to the requirements pre-scribed in Table 1.6. Dimensional Tolerances6.1 Permissible variation in cross-sectional dimensions shallbe as specified in Table 2 unless otherwise agreed uponbetween the purchaser and the supplier.7. Workmans

18、hip, Finish, and Appearance7.1 The elastomeric cellular materials shall be manufacturedand processed in a careful and workmanlike manner inaccordance with the best commercial practices.7.2 The surfaces of the finished material shall be reasonablysmooth and free of excessive talc or bloom.7.3 Unless

19、otherwise specified, the material shall be black.When colored material is desired, it is recommended that othertests, agreed upon between the purchaser and the supplier, beconducted to ensure color stability.8. Number of Tests and Retests8.1 Any material that fails in one or more of the testrequirem

20、ents may be retested by making two additional testsfor the requirements in which failure occurs. Failure in onesuch retest shall be cause for final rejection.8.2 Rejected material shall be disposed of as directed by thesupplier.9. Significance and Use9.1 Flame Propagation:9.1.1 This specification ha

21、s two options:9.1.1.1 Option IFlame propagation test is required.9.1.1.2 Option IIFlame propagation test is not required.9.1.2 In case no option is specified, Option I will apply.9.2 This specification has two classifications as related toozone resistance. These are Type I and Type II, with the latt

22、erhaving the greater resistance to ozone. The type should bespecified when making reference to this specification but in theevent that the type is not specified, Type II shall apply.NOTE 2Type II is included in this specification for use where greaterozone resistance is required.10. Sampling10.1 Whe

23、n possible, the completed manufactured productof a suitable section thereof shall be used for the tests specified.Representative samples of the lot being examined shall beselected at random as required.10.2 When the finished product does not lend itself totesting or to the taking of test specimens b

24、ecause of compli-cated shape, small size, metal or fabric inserts, or other reasons,standard test strips shall be prepared. The standard extrudedspecimens for testing, except where a specific specimen size isdefined by a particular test method, shall be 6.4 mm (14 in.)thick by 31.8 mm (114 in.) wide

25、 in rectangular cross section.The test pieces for flame propagation tests shall be as specifiedTABLE 1 Physical Requirements of Cellular Elastomeric MaterialsProperty Limit ASTM Test MethodACompression-deflection, 25 % deflection limits:kPa (psi) 91 to 168 (13 to 24) D 1056Compression set, 22 h 70C

26、(158F) max, % 30 D 395, Method BHeat agingB, 70 h 100C (212F), change in compression-deflection values:kPa (psi) 0to+70(0to+10) D 865 and D 1056Dimensional stability, change, max %, after heat aging, 70 h 100C (212F) 4 11.4Ozone resistanceCat 40 % elongation, 100 h 40C (104F):Type I 100 mPa ozone no

27、 cracks 73magnificationD 1149Type II 300 mPa ozone no cracks 73magnificationD 1149Low-temperature brittleness 40C (40F) pass see Appendix X1Water absorption, max, % weight 5.0 C 1083Flame propagation:Option IOption II101.6 mm (4 in.) maxno limitC 1166NonstainingDno migratory stain D 925ASee Section

28、11.BAfter heat aging, surfaces of the specimen shall be neither hard nor brittle.A152.4-mm (6-in.) length of the finished extrusion shall exhibit no surface cracks when benton itself 180.CThe specimen shall exhibit no surface cracks when in the extended condition.DThis requirement may be waived, sub

29、ject to agreement between the purchaser and the supplier.TABLE 2 Standards for Cross-Sectional ToleranceNOTE 1Dimensional tolerances for outside diameters, inside diam-eters, wall thickness, width, height, and general cross-sectional dimen-sions of extrusionsRubber Manufacturers AssociationARMA Clas

30、s 1 RMA Class 1Drawing Designation BEC 1 Drawing Designation BEC 1Dimensions (in inches) Dimensions (in Millimeters)Above Up To Above Up To0 0.25 60.016 0 6.4 60.40.25 0.50 0.025 6.4 12.7 0.630.50 1.00 0.050 12.7 25.4 1.251.00 1.60 0.080 25.4 40.6 2.01.60 compression; elastomer; elastomeric; gasket;

31、glazing; preformed; seal; sealingAPPENDIX(Nonmandatory Information)X1. TEST METHOD FOR LOW-TEMPERATURE BRITTLENESS OF RUBBER AND RUBBER-LIKE MATERIALS3X1.1 ScopeX1.1.1 This test method is intended to determine the abilityof compounds made from rubber or rubber-like materials toresist the effect of l

32、ow temperatures that may cause them tobecome brittle and fracture or crack when bent. Standardspecimens are exposed to specified low temperatures fordefinite periods after which the specimens are bent in aprescribed manner and any fracture or cracking noted. Theprocedure is commonly called the “Thio

33、kol” method.NOTE X1.1Results obtained by this test method are influenced by therate of flexing of the cooled specimens which can not be closely controlledin the prescribed apparatus. They are therefore of a qualitative nature andmay not be closely reproducible over a range of several degrees oftempe

34、rature depending on the speed of flexure. For more accuratedetermination of brittle temperature, and particularly in new specifica-tions, Test Method D 746 is recommended.X1.2 ApparatusX1.2.1 Cold Chamber, of sufficient size to contain theflexing fixture when loaded with specimens, and so arranged a

35、sto permit the operation of the fixture to bend to specimenswithout removal from the chamber. It shall be capable ofmaintaining within it a uniform atmosphere of cold, dry air or3This test method was originally issued in 1943 under the designation D736which was discontinued in April 1967.C509063a mi

36、xture of air and carbon dioxide at specified temperatureswithin a tolerance of 61C (2F).NOTE X1.2Temperatures of 40C (40F) and 55C (67F) arecommonly used.X1.2.2 Flexing Fixture, consisting of two parallel plateseach having a width of at least 50.8 mm (2 in.) so supported inguides that they may be ra

37、pidly moved from a position 63.5mm (212 in.) apart until they are separated by a distance of 25.4mm (1 in.). Suitable clamping bars or devices shall be providedfor holding the ends of the specimens for a distance of 6.4 mm(14 in.) at the corresponding edge of each plate so that whenmounted, the spec

38、imens form similar bent loops between theplates. A satisfactory flexing fixture is shown in Fig. X1.1.X1.3 Test SpecimensX1.3.1 The test specimens shall conform in shape to Die Cas specified in Test Methods D 412 and shall have a thicknessof 2.032 6 0.254 mm (0.080 6 0.010 in.).X1.3.2 At least two s

39、pecimens from each compound shallbe tested.X1.4 ProcedureX1.4.1 Mount the test specimens in loop position betweenthe plates of the flexing fixture with the enlarged ends spacedat least 3.2 mm (18 in.) apart and held in the clamps for adistance of 6.4 mm (14 in.). With the plates in the open position

40、separated 63.5 mm (212 in.), place the fixture containing thespecimens in the cold chamber and expose it for the specifiedperiod to cold, dry air or a mixture of air and carbon dioxide atthe specified temperature. The standard exposure period shallbe5h(Note X1.3). At the termination of the exposure

41、periodand while still in the cold chamber, move the plates of theflexing fixture as rapidly as possible from the 63.5-mm(212-in.) distance of separation to a position where they are25.4 mm (1 in.) apart. Then examine the specimens for fractureor visible cracks.NOTE X1.3Previously two periods were sp

42、ecified, 96 h for natural-rubber compounds and 5 h for synthetic-rubber compounds. It was foundthat5hisadequate for either class of compounds within the intent of thistest method.X1.5 ResultsX1.5.1 When two specimens are tested and neither onefractures nor shows cracks after being tested, the compou

43、ndshall be considered as having passed the brittleness test. If bothspecimens crack, the compound shall be considered to havefailed.X1.5.2 If only one specimen fractures or cracks, the result isinconclusive and two additional specimens shall be tested. Ifeither one of these cracks, the compound shal

44、l then beconsidered to have failed.X1.6 ReportX1.6.1 Report the following:X1.6.1.1 The results of the test expressed as “passed” or“failed,”X1.6.1.2 The temperature of the cold chamber,X1.6.1.3 The duration of the exposure period,X1.6.1.4 Identification of the material tested including de-scription

45、of any special treatment prior to test, andX1.6.1.5 Data of manufacture of the material, if known, anddate of test.FIG. X1.1 Flexing Fixture for Low-Temperature Brittleness TestC509064ASTM International takes no position respecting the validity of any patent rights asserted in connection with any it

46、em 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 responsible technical com

47、mittee 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 careful consideration at a

48、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 International, 100 Barr Harbor Driv

49、e, 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).C509065