ASTM_C_864_-_05_2015.pdf

Designation:C86405(Reapproved 2015)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 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 U.S.Department of Defense.1.Scope1.1 This specification 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 C1166,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,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 end use.1.3 The following precautionary statement pertains only tothe 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 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 Dense andCellular Elastomeric Gaskets and AccessoriesD395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD573 Test Method for RubberDeterioration in an AirOvenD624 Test Method for Tear Strength of Conventional Vul-canized Rubber 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 DeteriorationCracking inan Ozone Controlled EnvironmentD1566 Terminology Relating to RubberD2240 Test Method for Rubber PropertyDurometer Hard-nessD3182 Practice for RubberMaterials,Equipment,and Pro-cedures for Mixing Standard Compounds and PreparingStandard Vulcanized Sheets3.Terminology3.1 Definitions:3.1.1 For the definition of elastomer,and other definitions 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 whereresistance 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 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 Dec.1,2015.Published December 2015.Originallyapproved in 1977.Last previous edition approved in 2011 as C864 05(2011).DOI:10.1520/C0864-05R15.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 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 all 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 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