ASTM_F_2168_-_13.pdf

Designation:F216813An American National StandardStandard Specification forPacking Material,Graphitic,Corrugated Ribbon or TexturedTape,and Die-Formed Ring1This standard is issued under the fixed designation F2168;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.1.Scope1.1 ScopeThis specification covers various types,classes,and grades of flexible graphite material in which valve mediatemperatures are limited to a maximum of 966C.Where thisspecification is invoked as ASTM F2168,Sections 1 18apply.Where this specification is invoked as ASTM/DoDF2168,Sections 1 18 and the Supplementary Requirementsapply.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.2.Referenced Documents2.1 ASTM Standards:2C559 Test Method for Bulk Density by Physical Measure-ments of Manufactured Carbon and Graphite ArticlesC561 Test Method for Ash in a Graphite SampleC816 Test Method for Sulfur in Graphite by Combustion-Iodometric Titration MethodC889 Test Methods for Chemical and Mass SpectrometricAnalysis of Nuclear-Grade Gadolinium Oxide(Gd2O3)PowderD129 Test Method for Sulfur in Petroleum Products(Gen-eral High Pressure Decomposition Device Method)D512 Test Methods for Chloride Ion In WaterD1179 Test Methods for Fluoride Ion in WaterD1246 Test Method for Bromide Ion in WaterD3178 Test Methods for Carbon and Hydrogen in theAnalysis Sample of Coal and Coke(Withdrawn 2007)3D3684 Test Method for Total Mercury in Coal by theOxygen Bomb Combustion/Atomic Absorption Method(Withdrawn 2014)3D3761 Test Method for Total Fluorine in Coal by theOxygen Bomb Combustion/Ion Selective ElectrodeMethodD3951 Practice for Commercial PackagingD4239 Test Method for Sulfur in the Analysis Sample ofCoal and Coke Using High-Temperature Tube FurnaceCombustion3.Terminology3.1 Definitions:3.1.1 accordion crease,nbecause of the method of con-struction of die-formed rings,an accordion-like linear indica-tion(crease)appear singularly or in multiple locations aroundthe inside and outside diameter surface.3.1.2 corrosion inhibitors,nadditives to the products tofunction in a passive or sacrificial manner to reduce galvaniccorrosion.These additives are typically embedded zincpowder,phosphorus,or barium molybdate.3.1.3 corrugated ribbon,ngraphite ribbon or tape that issubjected to mechanical pressure in a consistent manner toapply surface indentations to the tape or ribbon.3.1.4 density,nthe mass per unit volume at a specifiedtemperature.3.1.5 detrimental materials,nabrasive or chemically ac-tive constituents such as ash particles(in high ash content foils)or elemental materials that cause galvanic action or corrosionin long-term storage or service environments.3.1.6 die-formed ring,na packing ring made by mechani-cally compacting winds of graphite ribbon or braided packingin a die or fixture.3.1.7 lot,nall finished packing of one size,type,class,andgrade produced in a continuous run or at the same time underessentially the same conditions.3.1.8 set,nthe packing components required to pack onevalve.3.1.9 size,nthe physical dimensions of the packing mate-rial.1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.02 onInsulation/Processes.Current edition approved Oct.1,2013.Published October 2013.Originallyapproved in 2002.Last previous edition approved in 2008 as F2168-02(2008).DOI:10.1520/F2168-13.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Classification4.1 ClassificationThe material shall be of the followingtypes,classes,and grades as specified(see Section 5).4.1.1 Type ICorrugated ribbon or textured tape.4.1.2 Type IIDie-formed ring.4.1.3 Class 1For use where detrimental material contentof the packing need not be controlled beyond normal manu-facturing limit(commercial grade).4.1.4 Class 2For use where detrimental material contentshall be controlled to the limits specified herein.4.1.5 Grade ATreated with corrosion inhibitor.4.1.6 Grade BNo corrosion inhibitor.5.Ordering Information5.1 Contracts or orders for the units under this specificationshall include the following information:5.1.1 Title,number,and date of this specification.5.1.2 Type,class,and grade.5.1.3 Type of corrosion inhibitor(see 6.1.3 and Supplemen-tary Requirements).5.1.4 Specify density of die-formed rings.5.1.5 In