1、Designation: C864 05 (Reapproved 2011)Standard Specification forDense Elastomeric Compression Seal Gaskets, SettingBlocks, and Spacers1This standard is issued under the fixed designation C864; the number immediately following the designation indicates the year oforiginal adoption or, in the case of
2、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.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specificat
3、ion covers preformed dense elastomericcompression gaskets and accessories for use in sealing andglazing applications. These materials are generally used to sealor serve as components of compression sealing systems be-tween mechanically restrained surfaces in building construc-tions.1.2 Test Method C
4、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 or appraise the fire hazard or fire risk ofmaterials, products, o
5、r 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 end use.1.3 The following precautionary statement pertains only t
6、othe test method portion, Section 9, 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 appropriate safety and healthpractices and determine the applicability of
7、 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:2C717 Terminology of Building Seals and SealantsC1166 Test Method for Flame Propagation of
8、Dense andCellular Elastomeric Gaskets and AccessoriesD395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermo-plastic ElastomersTensionD573 Test Method for RubberDeterioration in an AirOvenD624 Test Method for Tear Strength of Conventional Vul-canized Ru
9、bber and Thermoplastic ElastomersD746 Test Method for Brittleness Temperature of Plasticsand Elastomers by ImpactD925 Test Methods for Rubber PropertyStaining of Sur-faces (Contact, Migration, and Diffusion)D1149 Test Methods for Rubber DeteriorationCrackingin an Ozone Controlled EnvironmentD1566 Te
10、rminology Relating to RubberD2240 Test Method for Rubber PropertyDurometerHardnessD3182 Practice for RubberMaterials, Equipment, andProcedures for Mixing Standard Compounds and Prepar-ing Standard Vulcanized Sheets3. Terminology3.1 Definitions:3.1.1 For the definition of elastomer, and other definit
11、ions ofterms used in this specification, see Terminology C717.4. Materials and Manufacture4.1 The elastomeric materials shall be manufactured from ahigh-quality ozone-resistant compound that, when properlycured, will comply with this specification.4.2 The cured compound shall be suitable for use whe
12、reresistance to sunlight, weathering, oxidation, and permanentdeformation under load are of prime importance.4.3 The preformed gaskets or shapes shall be free ofporosity, surface defects, and dimensional irregularities thatmay affect serviceability.4.4 Unless otherwise specified, the material shall
13、be black.1This 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 June 1, 2011. Published August 2011. Originallyapproved in 1977. Last
14、previous edition approved in 2005 as C864 05. DOI:10.1520/C0864-05R11.2For 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
15、 website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Physical Properties5.1 The physical properties of the material shall conform tothe requirements specified in Table 1.6. Dimensional Tolerances6.1 Permissible variations in a
16、ll cross-sectional dimensionsshall be as specified in Table 2 unless otherwise agreed uponbetween the purchaser and the supplier.7. Significance and Use7.1 Flame Propagation:7.1.1 This specification has two options:7.1.1.1 Option IFlame propagation test is required.7.1.1.2 Option IIFlame propagation
17、 test is not required.7.1.2 In case no option is specified, Option I will apply.8. Sampling8.1 Samples for testing shall be taken from the finishedproduct whenever possible.8.2 When the thickness or shape of the finished productmakes it impossible to obtain the type of samples specified inthe variou
18、s methods, the manufacturer shall, upon request ofthe purchaser at the time of ordering, furnish a sufficientnumber of test slabs, strips or blocks, prepared in accordancewith Practice D3182, for the proper performance of therequired tests. The slabs or blocks shall be prepared from thesame producti
19、on lot of compound and the same state of cure asis used for the gasket.9. Test Methods9.1 HardnessTest Method D2240. Measure hardness oneither a finished surface, a squarely cut end, or a flat sliced orbuffed surface, depending on the size and shape of thespecimen (Note 1). Determine the change in h
20、ardness afteroven aging for 70 h at 100 6 1C (212 6 2F).NOTE 1Hardness readings for the purpose of approximate determi-nations may be taken from the dumbbell specimens, recognizing that thesemay vary slightly from those taken from the finished material.9.2 Compression SetTest Methods D395, Method B.
21、Oven age specimens 22 h at 100 6 1C (2126 2F). Whereplied specimens are necessary, the results shall comply with therequirements of Table 1.9.3 Ozone ResistanceTest Method D1149 (Specimen A),using an ozone concentration of 100 mPa, an exposure time of100hat406 2C (104 6 3.6F), and a specimen elongat
22、ionof 20 %.9.4 Tensile Strength and Elongation Test Methods D412.Where possible, prepare the dumbbells from sections of thefinished material. Determine the percentage change in tensilestrength and elongation after oven aging for 70 h at 100 6 1C(212 6 2F).9.5 Heat AgingTest Method D573.9.6 Tear Stre
23、ngthTest Method D624, using Die C.9.7 Brittleness TemperatureTest Method D746.9.8 Non-StainingTest Methods D925, Method B.9.9 Flame PropagationTest Method C1166 determineswhether or not the gasket will propagate flame, with nosignificance being attached to such matters as fuel contribution,rate of f
24、lame spread, smoke generation, or the nature andtemperature of products of combustion.10. Keywords10.1 compression; dense; elastomer; elastomeric; gasket;glazing; preformed; seal; setting block; spacersTABLE 1 Elastomeric Compression Seal Gaskets and Accessories Physical RequirementsProperties Requi
25、rementsASTM TestMethodHardness, nominal Shore A durometer6 5, asspecified by the purchaser40 50 60 70 80 90 D2240Compression set, 22 h 100C (212F), max, % 35 30 30 30 35 40 D395Ozone resistance, 100 mPa, 100 h 40C(104F), 20 % elongation no cracks D1149 (Specimen A)at 73 magnificationTensile strength
26、, min, MPa (psi) 10.3 (1500) 10.3 (1500) 11.0 (1600) 12.4 (1800) 12.4 (1800) 12.4 (1800) D412, Die CElongation at rupture, min, % 400 300 250 200 175 125 D412, Die CHeat aging, 70 h, 100C (212F):Hardness increase, max durometer points 10 10 10 10 10 10 D573Change in tensile strength, max, % 15 15 15
27、 15 15 15Change in elongation, max, % 40 40 40 40 40 40Tear strength, min, kN/m (lbf/in.) 26.3 (150) 26.3 (150) 26.3 (150) 17.5 (100) 17.5 (100) 13.1 (75) D624, Die CBrittleness temperature, max, C 40 40 40 40 40 40 D746Nonstaining no migratory stain D925Flame propagation C1166Option I 100 mm (4 in.
28、) max. Option II no limitC864 05 (2011)2ASTM International 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
29、 riskof infringement of such rights, 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
30、 this standard or for additional standardsand 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 shouldm
31、ake your views known to the ASTM Committee 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
32、 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/).TABLE 2 Standards for Cross-
33、Sectional ToleranceNOTE 1Dimensional tolerances for outside diameters, inside diameters, wall thickness, width, height, and general cross-sectional dimensions ofextrusion.Rubber Manufacturers AssociationARMA Class 2PrecisionRMA Class 2PrecisionDrawing Designation E2 Drawing Designation E2Dimensions
34、(in inches) Dimensions (in Millimeters)Above Up to Above Up to0 0.06 60.010 0 1.5 60.250.06 0.10 0.014 1.5 2.5 0.350.10 0.16 0.016 2.5 4.0 0.400.16 0.25 0.020 4.0 6.3 0.500.25 0.39 0.027 6.3 10 0.700.39 0.63 0.031 10 16 0.800.63 0.98 0.039 16 25 1.000.98 1.57 0.051 25 40 1.301.57 2.48 0.063 40 63 1.602.48 3.94 0.079 63 100 2.00AAdapted from Rubber Manufacturers Association Handbook, Table 13, Fifth Ed., 1992.C864 05 (2011)3
