ASTM_C_509_-_06_2015.pdf

Designation:C50906(Reapproved 2015)Standard Specification forElastomeric Cellular Preformed Gasket and SealingMaterial1This standard is issued under the fixed designation C509;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 applies to those elastomeric 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.NOTE1For softer cellular elastomeric materials used in secondarysealing applications,refer to Specification D1056.1.2 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 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 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 SealantsC1083 Test Method for Water Absorption of Cellular Elas-tomeric Gaskets and Sealing MaterialsC1166 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 ElastomersTensionD746 Test Method for Brittleness Temperature of Plasticsand Elastomers by ImpactD865 Test Method for RubberDeterioration by Heating inAir(Test Tube Enclosure)D925 Test Methods for Rubber PropertyStaining of Sur-faces(Contact,Migration,and Diffusion)D1056 Specification for Flexible Cellular MaterialsSponge or Expanded RubberD1149 Test Methods for Rubber DeteriorationCracking inan Ozone Controlled Environment3.Terminology3.1 DefinitionsRefer to Terminology C717 for the follow-ing terms used in this specification:cellular material,elastomeric,gasket glazing,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 that,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 ahomogeneous 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 than those required1This 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 1963.Last previous edition approved in 2011 as C509 06(2011).DOI:10.1520/C0509-06R15.2For 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 by this specification,which may be needed for specificapplications,shall be specified by the purchaser,since suchcharacteristics may influence the choice of base materials andother 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 o