ASTM F2168-13(2019)
(Specification)Standard Specification for Packing Material, Graphitic, Corrugated Ribbon or Textured Tape, and Die-Formed Ring
Standard Specification for Packing Material, Graphitic, Corrugated Ribbon or Textured Tape, and Die-Formed Ring
ABSTRACT
This specification covers various types, classes, and grades of flexible graphite material in which valve media temperatures are limited to a maximum temperature. The material shall be classified into two types, classes, and grades. Type I is a corrugated ribbon or textured tape, Type II is die-formed ring. Class 1 is for use where detrimental material content of the packing need not be controlled beyond normal manufacturing limit and Class 2 is for use where detrimental material content must be controlled to the limits specified herein. Grade A is treated with corrosion inhibitor and Grade B not treated with corrosion inhibitor. Different tests and measurements shall be conducted in order to determine the following properties: size, bulk density, ash content, and graphite purity.
SCOPE
1.1 Scope—This specification covers various types, classes, and grades of flexible graphite material in which valve media temperatures are limited to a maximum of 966°C. Where this specification is invoked as ASTM F2168, Sections 1 – 18 apply. Where this specification is invoked as ASTM/DoD F2168, Sections 1 – 18 and the Supplementary Requirements apply.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:F2168 −13 (Reapproved 2019) An American National Standard
Standard Specification for
Packing Material, Graphitic, Corrugated Ribbon or Textured
Tape, and Die-Formed Ring
This standard is issued under the fixed designation F2168; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D1246 Test Method for Bromide Ion in Water
D3178 Test Methods for Carbon and Hydrogen in the
1.1 Scope—This specification covers various types, classes,
Analysis Sample of Coal and Coke (Withdrawn 2007)
and grades of flexible graphite material in which valve media
D3684 Test Method for Total Mercury in Coal by the
temperatures are limited to a maximum of 966°C. Where this
Oxygen Bomb Combustion/Atomic Absorption Method
specification is invoked as ASTM F2168, Sections 1–18
(Withdrawn 2014)
apply. Where this specification is invoked as ASTM/DoD
D3761 Test Method for Total Fluorine in Coal by the
F2168, Sections1–18 and the Supplementary Requirements
Oxygen Bomb Combustion/Ion Selective Electrode
apply.
Method (Withdrawn 2019)
1.2 The values stated in SI units are to be regarded as
D3951 Practice for Commercial Packaging
standard. No other units of measurement are included in this
D4239 Test Method for Sulfur in the Analysis Sample of
standard.
Coal and Coke Using High-Temperature Tube Furnace
1.3 This international standard was developed in accor-
Combustion
dance with internationally recognized principles on standard-
3. Terminology
ization established in the Decision on Principles for the
3.1 Definitions:
Development of International Standards, Guides and Recom-
3.1.1 accordion crease, n—because of the method of con-
mendations issued by the World Trade Organization Technical
struction of die-formed rings, an accordion-like linear indica-
Barriers to Trade (TBT) Committee.
tion (crease) appear singularly or in multiple locations around
2. Referenced Documents
the inside and outside diameter surface.
2.1 ASTM Standards: 3.1.2 corrosion inhibitors, n—additives to the products to
function in a passive or sacrificial manner to reduce galvanic
C559 Test Method for Bulk Density by Physical Measure-
ments of Manufactured Carbon and Graphite Articles corrosion. These additives are typically embedded zinc
powder, phosphorus, or barium molybdate.
C561 Test Method for Ash in a Graphite Sample
C816 Test Method for Sulfur Content in Graphite by
3.1.3 corrugated ribbon, n—graphite ribbon or tape that is
Combustion-Iodometric Titration Method
subjected to mechanical pressure in a consistent manner to
C889 Test Methods for Chemical and Mass Spectrometric
apply surface indentations to the tape or ribbon.
Analysis of Nuclear-Grade Gadolinium Oxide (Gd O )
2 3
3.1.4 density, n—the mass per unit volume at a specified
Powder
temperature.
D129 Test Method for Sulfur in Petroleum Products (Gen-
3.1.5 detrimental materials, n—abrasive or chemically ac-
eral High Pressure Decomposition Device Method)
tiveconstituentssuchasashparticles(inhighashcontentfoils)
D512 Test Methods for Chloride Ion In Water
or elemental materials that cause galvanic action or corrosion
D1179 Test Methods for Fluoride Ion in Water
in long-term storage or service environments.
3.1.6 die-formed ring, n—a packing ring made by mechani-
This specification is under the jurisdiction of ASTM Committee F25 on Ships
cally compacting winds of graphite ribbon or braided packing
and Marine Technology and is the direct responsibility of Subcommittee F25.02 on
in a die or fixture.
Insulation/Processes.
3.1.7 lot, n—allfinishedpackingofonesize,type,class,and
Current edition approved Dec. 1, 2019. Published January 2020. Originally
approved in 2002. Last previous edition approved in 2013 as F2168 – 13. DOI:
grade produced in a continuous run or at the same time under
10.1520/F2168-13R19.
essentially the same conditions.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2168−13 (2019)
TABLE 1 Chemical and Physical Properties TABLE 2 Detrimental Materials (Class 2 Only (See 13.6))
Property Value Unit Test Maximum Total Allowable
Element Impurity Levels in Parts
Density, bulk as specified kg/m 13.5
per Million (ppm)
Ash 1 % by mass, max 13.3
Graphite purity 99 %, min 13.4 Mercury (Hg) 10
Sulfur (S) 750
Total halogens (chlorine, bromine, and fluorine) 500
Chlorine (Cl) 250
3.1.8 set, n—the packing components required to pack one
Bromine (Br) 250
Fluorine (F) 250
valve.
3.1.9 size, n—the physical dimensions of the packing mate-
rial.
4. Classification
6.1.3 Coating and Corrosion-Inhibiting Treatments:
4.1 Classification—The material shall be of the following
6.1.3.1 Grade A—GradeApacking shall be provided with a
types, classes, and grades as specified (see Section 5).
powdered zinc active corrosion-inhibiting treatment or a pas-
4.1.1 Type I—Corrugated ribbon or textured tape.
sive inhibiting treatment such as phosphorous or barium
4.1.2 Type II—Die-formed ring.
molybdate, as specified (see Section 5). When the use of
4.1.3 Class 1—For use where detrimental material content
inhibitors is required, both passive and active inhibitors shall
of the packing need not be controlled beyond normal manu-
be permitted to be used.
facturing limit (commercial grade).
6.1.3.2 Grade B—Grade B packing shall not contain
4.1.4 Class 2—For use where detrimental material content
corrosion-inhibiting additives.
shall be controlled to the limits specified herein.
6.1.4 Mercury Exclusion—During manufacturing,
4.1.5 Grade A—Treated with corrosion inhibitor.
fabrication, handling, packaging, and packing, the packing
4.1.6 Grade B—No corrosion inhibitor.
material shall not come in contact with mercury or mercury
5. Ordering Information containing compounds.
5.1 Contracts or orders for the units under this specification
7. Properties
shall include the following information:
5.1.1 Title, number, and date of this specification. 7.1 Chemical and Physical Properties—Unless otherwise
5.1.2 Type, class, and grade.
specified, the properties of the finished packing shall conform
5.1.3 Type of corrosion inhibitor (see 6.1.3 and Supplemen- to the requirements of Table 1. Class 2 also requires compli-
tary Requirements). ance with Table 2.
5.1.4 Specify density of die-formed rings.
7.2 Prohibited Additions—There shall be no intentional
5.1.5 Inspection, testing, and certification of the material
additions of any of the detrimental materials of Table 2 or
shall be agreed upon between the purchaser and the supplier as
antimony (Sb), arsenic (As), bismuth (Bi), cadmium (Cd),
part of the purchase contract (see Sections 14 and 16).
gallium(Ga),indium(In),lead(Pb),mercury(Hg),silver(Ag),
5.1.6 When die-formed (Type II) packing rings are desired,
or tin (Sn) during the manufacturing, fabrication, handling,
the ring height, inside diameter, outside diameter, number of
packaging, and packing of the product.
cuts, and number of packing rings required per set (see 9.2 and
9.3).
8. Other Requirements
5.1.7 Marking requirements (see Section 17 and Supple-
8.1 No other requirements noted.
mentary Requirements).
5.1.8 Packaging requirements (see Section 18 and Supple-
9. Dimensions, Mass, and Permissible Variations
mentary Requirements).
5.1.9 Application data (to include operating pressure, oper-
9.1 Type I Ribbon Packing—Unless otherwise specified (see
ating temperature, and media).
Section 5), the packing shall be uniformly coiled, spooled, or
5.1.10 Specify thickness of Type I.
reeled in accordance with Table 3.
6. Materials and Manufacture 9.2 Type II Die-Formed Packing—Unless otherwise speci-
fied (see Section 5), the tolerances for Type II packing shall be
6.1 Material—Requirements specified herein apply to Class
in accordance with Table 4. The tolerance applies to finished
1 and Class 2 and GradeAand Grade B packing, except where
rings before any cutting operations.
noted.
6.1.1 Type I—The packing shall be made entirely of flexible 9.3 Split Rings—The number of cuts (zero, one, or two)
graphitic material having no binders and meeting the require-
shall be as specified (see Section 5). Cuts shall be made at
ments of Tables 1 and 2. approximately a 45° angle such that an overlapping joint is
6.1.2 Type II—Die-formed packing rings shall be manufac-
formed in the compressed state. When two cuts are required
tured from flexible graphitic material conforming to the re- (separating the ring into two parts), the resulting parts shall be
quirements of Tables 1 and 2.
approximately the same dimension. When the number of cuts
is not specified, single-cut rings shall be provided.
F2168−13 (2019)
TABLE 3 Dimensions for Type I
13.5 Bulk Density—The bulk density of theType I andType
Width Length, min II materials determined in accordance with Test Method C559.
6 ± 0.075 mm 7.62 m
13.6 Detrimental Material Tests—For determination of the
12 ± 0.075 mm 7.62 m
detrimental materials listed in Table 2 for Class 2 only, the test
18 ± 0.075 mm 15.24 m
25 ± 0.075 mm 15.24 m
methods of Table 6 or alternate methods of equal or improved
accuracy and precision shall be used.
14. Inspection and Testing
10. Workmanship, Finish, and Appearance
14.1 Inspection and testing of the material shall be agreed
10.1 Workmanship—The packing shall be free from extra-
upon between the purchaser and the supplier as part of the
neous material and visual defects that affect its serviceability,
purchase contract (see 5.1.5).
as defined in Table 5.
15. Rejection
11. Quality Assurance
15.1 Materials that fail to conform to the requirements of
11.1 Quality Systems—Manufacturers shall be prepared to
this specification shall be rejected. Rejection shall be reported
document use of a quality system such as compliance with an
to the producer or supplier promptly and in writing. In case of
ISO 9000 series program or similar program.
dissatisfaction with the results of testing, the producer shall
make claim for a rehearing or provide for third party testing.
12. Specimen Preparation
16. Certification
12.1 Specimen Preparation—Buyerandsellershallagreeon
specimen preparation.
16.1 When specified in the purchase order or contract, the
purchaser shall be furnished certification that samples repre-
13. Test Methods
senting each lot have been tested and the requirements have
13.1 Tests—When tests are required as part of the purchas- been met. When specified in the purchase order or contract, a
ing requirements (see 5.1.5), tests shall be made in accordance report of the test results shall be furnished.
with the following methods or by way of alternate methods of
16.2 Detrimental Materials Control—For Class 2 material
analysis with equal or improved accuracy and precision. The
only, the vendor shall provide certification that the limits of
use of an alternate analytical method requires the prior written
Table 2 have been met and that low melting metals (Sb,As, Bi,
consent of the purchasing party before acceptance will be
Cd, Pb, Sn, Ga, In,Ag, Hg and Zn [Zn for Grade B only]) have
allowed. Except for the corrosion-inhibiting treatment excep-
not been added as intentional constituents. In lieu of specific
tions of 13.3 and 13.4, all testing shall be performed on final
test results for the lot to be delivered, certifications shall be
product after completion of all processing, including applica-
based on tests of both raw materials and production lots of
tion of any binders and, if required, corrosion inhibitors.
similar finished packing material over an extended time period
13.2 Size—The size determined by measuring each sample (not exceeding three years between tests). Any change to
manufacturing processing that affects product composition,
selected for visual examination (see Table 4).
includingchangestorawmaterial,binders,orinhibitors(Grade
13.3 Ash Content—The ash content determined in accor-
A) shall require additional testing to form the basis for future
dance with Test Method C561 (see Table 1). For Grade A
certifications.
packing only, the test shall be conducted before the corrosion-
inhibiting treatment or the added mass of the corrosion
17. Product Marking
inhibitor shall be determined and subtracted from the base
17.1 Marking—For commercial shipment, marking shall be
mass of the sample.
inaccordancewithacceptedindustrypracticesorasrequiredin
13.4 Graphite Purity—The sample shall be dried to a
the purchase contract (see 5.1.1). Marking shall include type of
constant mass at 149 6 3°C before testing. For Grade A
corrosion inhibitor, if any.
packing only, the test shall be conducted before the corrosion-
18. Packaging
inhibiting treatment or the added mass of the corrosion
inhibitor shall be determined and subtracted from the base
18.1 Commercial Packaging—Commercial packaging shall
mass of the sample. The percent carbon shall be based upon
be in accordance with Practice D3951 or as required in the
mass of the dried sample. This determination shall be made in
purchase contract (see 5.1.1).
accordancewithTestMethodsD3178oranalternatemethodof
19. Keywords
analysis with equal or improved accuracy and precision (see
Table 1). 19.1 flexible graphite material; packing material
F2168−13 (2019)
TABLE 4 Tolerances for Type II Packing
Inside Diameter (i.d.) Outside Diameter (o.d.) Thickness
+0.25 mm +0.000 mm ±0.50 mm
to 25 mm o.d.
-0.000 mm -0.25 mm
+0.38 mm +0.000 mm ±0.75 mm
25 mm and above o.d.
-0.000 mm -0.38 mm
TABLE 5 Classification of Visual Defects
Item Category—Major
Type I corrugated ribbon or textured tape Void.
Rip or tear in ribbon.
Particulate or extraneous matter on surface that is not easily removed without damaging the packing.
Noncontinuous length (no joints).
Lack of corrugation or textured surface area.
Creasing or crimping.
Type II die-formed rings Holes or voids.
Particulate or extraneous matter on surface that is not easily removed without damaging the packing.
Delaminations (laminated rings).
Gouges (minor indentations less than 0.12 mm in depth resulting from normal prod
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