ASTM F2168-02(2008)
(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 1050°F (966°C). Where this specification is invoked as ASTM F 2168, Sections 1-18 apply. Where this specification is invoked as ASTM/DoD F 2168, Sections 1-18 and the Supplementary Requirements are applicable.
1.2 The values stated in SI units are to be regarded as standard.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F2168 −02(Reapproved 2008) 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 D3761 Test Method for Total Fluorine in Coal by the
Oxygen Bomb Combustion/Ion Selective Electrode
1.1 Scope—This specification covers various types, classes,
Method
and grades of flexible graphite material in which valve media
D3951 Practice for Commercial Packaging
temperatures are limited to a maximum of 1050°F (966°C).
D4239 Test Method for Sulfur in the Analysis Sample of
Where this specification is invoked as ASTM F2168, Sections
Coal and Coke Using High-Temperature Tube Furnace
1-18 apply. Where this specification is invoked asASTM/DoD
Combustion
F2168, Sections 1-18 and the Supplementary Requirements are
applicable.
3. Terminology
1.2 The values stated in SI units are to be regarded as
3.1 Definitions:
standard.
3.1.1 accordion crease, n—because of the method of con-
struction of die-formed rings, an accordion-like linear indica-
2. Referenced Documents
tion (crease) may appear singularly or in multiple locations
around the inside and outside diameter surface.
2.1 ASTM Standards:
C559 Test Method for Bulk Density by Physical Measure-
3.1.2 corrosion inhibitors, n—additives to the products to
ments of Manufactured Carbon and Graphite Articles
function in a passive or sacrificial manner to reduce galvanic
C561 Test Method for Ash in a Graphite Sample
corrosion. These additives are typically embedded zinc
C816 Test Method for Sulfur in Graphite by Combustion-
powder, phosphorus, or barium molybdate.
Iodometric Titration Method
3.1.3 corrugated ribbon, n—graphite ribbon or tape that is
C889 Test Methods for Chemical and Mass Spectrometric
subjected to mechanical pressure in a consistent manner to
Analysis of Nuclear-Grade Gadolinium Oxide (Gd O )
2 3
apply surface indentations to the tape or ribbon.
Powder
3.1.4 density, n—the mass per unit volume at a specified
D129 Test Method for Sulfur in Petroleum Products (Gen-
temperature.
eral High Pressure Decomposition Device Method)
D512 Test Methods for Chloride Ion In Water 3.1.5 detrimental materials, n—abrasive or chemically ac-
tiveconstituentssuchasashparticles(inhighashcontentfoils)
D1179 Test Methods for Fluoride Ion in Water
D1246 Test Method for Bromide Ion in Water or elemental materials that can cause galvanic action or
corrosion in long-term storage or service environments.
D3178 Test Methods for Carbon and Hydrogen in the
Analysis Sample of Coal and Coke (Withdrawn 2007)
3.1.6 die-formed ring, n—a packing ring made by mechani-
D3684 Test Method for Total Mercury in Coal by the
cally compacting winds of graphite ribbon or braided packing
Oxygen BombCombustion/Atomic Absorption Method
in a die or fixture.
3.1.7 lot, n—allfinishedpackingofonesize,type,class,and
grade produced in a continuous run or at the same time under
This specification is under the jurisdiction of ASTM Committee F25 on Ships
essentially the same conditions.
and Marine Technology and is the direct responsibility of Subcommittee F25.02 on
3.1.8 set, n—the packing components required to pack one
Insulation/Processes.
CurrenteditionapprovedMay1,2008.PublishedJuly2008.Originallyapproved
valve.
in 2002. Last previous edition approved in 2002 as F2168 - 02. DOI: 10.1520/
3.1.9 size, n—refers to the physical dimensions of the
F2168-02R08.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or packing material.
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 4. Classification
the ASTM website.
4.1 Classification—The material shall be of the following
The last approved version of this historical standard is referenced on
www.astm.org. types, classes, and grades as specified (see Section 5).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2168−02 (2008)
TABLE 2 Detrimental Materials (Class 2 Only (See 13.6))
4.1.1 Type I—Corrugated ribbon or textured tape.
4.1.2 Type II—Die-formed ring. Maximum Total
Allowable Impurity
4.1.3 Class 1—For use where detrimental material content
Element
Levels in Parts per
of the packing need not be controlled beyond normal manu-
Million (ppm)
facturing limit (commercial grade).
Mercury (Hg) 10
Sulfur (S) 750
4.1.4 Class 2—For use where detrimental material content
Total halogens (chlorine, bromine, and
must be controlled to the limits specified herein.
fluorine)
4.1.5 Grade A—Treated with corrosion inhibitor.
Chlorine (Cl) 250
4.1.6 Grade B—No corrosion inhibitor. Bromine (Br) 250
Fluorine (F) 250
5. Ordering Information
5.1 Contracts or orders for the units under this specification
shall include the following information:
5.1.1 Title, number, and date of this specification. 6.1.4 Mercury Exclusion—During manufacturing,
5.1.2 Type, class, and grade.
fabrication, handling, packaging, and packing, the packing
5.1.3 Type of corrosion inhibitor (see 6.1.3 and Supplemen-
material shall not come in contact with mercury or mercury
tary Requirements).
containing compounds.
5.1.4 Specify density of die-formed rings.
5.1.5 Inspection, testing, and certification of the material 7. Properties
should be agreed upon between the purchaser and the supplier
7.1 Chemical and Physical Properties—Unless otherwise
as part of the purchase contract (see Sections 14 and 16).
specified, the properties of the finished packing shall conform
5.1.6 When die-formed (Type II) packing rings are desired,
to the requirements of Table 1. Class 2 also requires compli-
the ring height, inside diameter, outside diameter, number of
ance with Table 2.
cuts, and number of packing rings required per set (see 9.2 and
7.2 Prohibited Additions—There shall be no intentional
9.3).
additions of any of the detrimental materials of Table 2 or
5.1.7 Marking requirements (see Section 17 and Supple-
antimony (Sb), arsenic (As), bismuth (Bi), cadmium (Cd),
mentary Requirements).
gallium(Ga),indium(In),lead(Pb),mercury(Hg),silver(Ag),
5.1.8 Packaging requirements (see Section 18 and Supple-
or tin (Sn) during the manufacturing, fabrication, handling,
mentary Requirements).
packaging, and packing of the product.
5.1.9 Application data (to include operating pressure, oper-
ating temperature, and media).
8. Other Requirements
5.1.10 Specify thickness of Type I.
8.1 No other requirements noted.
6. Materials and Manufacture
9. Dimensions, Mass, and Permissible Variations
6.1 Material—Requirements specified herein apply to Class
1 and Class 2 and GradeAand Grade B packing, except where
9.1 Type I Ribbon Packing—Unless otherwise specified (see
noted.
Section 5), the packing shall be uniformly coiled, spooled, or
6.1.1 Type I—The packing shall be made entirely of flexible
reeled in accordance with Table 3.
graphitic material having no binders and meeting the require-
9.2 Type II Die-Formed Packing—Unless otherwise speci-
ments of Tables 1 and 2.
fied (see Section 5), the tolerances for Type II packing shall be
6.1.2 Type II—Die-formed packing rings shall be manufac-
in accordance with Table 4. The tolerance applies to finished
tured from flexible graphitic material conforming to the re-
rings before any cutting operations.
quirements of Tables 1 and 2.
9.3 Split Rings—The number of cuts (zero, one, or two)
6.1.3 Coating and Corrosion-Inhibiting Treatments:
6.1.3.1 Grade A—GradeApacking shall be provided with a shall be as specified (see Section 5). Cuts shall be made at
approximately a 45° angle such that an overlapping joint is
powdered zinc active corrosion-inhibiting treatment or a pas-
sive inhibiting treatment such as phosphorous or barium formed in the compressed state. When two cuts are required
(separating the ring into two parts), the resulting parts shall be
molybdate, as specified (see Section 5). If the use of inhibitors
is required, both passive and active inhibitors shall be permit- approximately the same dimension. If the number of cuts is not
specified, single-cut rings shall be provided.
ted to be used.
6.1.3.2 Grade B—Grade B packing shall not contain
corrosion-inhibiting additives.
TABLE 3 Dimensions for Type I
TABLE 1 Chemical and Physical Properties
Width Length, min
Property Value Unit Test
0.25 ± 0.030 in (6 ± 0.075 mm) 25 ft (7.62 m)
Density, bulk as specified kg/m 13.5 0.50 ± 0.030 in (12 ± 0.075 mm) 25 ft (7.62 m)
Ash 1 % by mass, max 13.3 0.75 ± 0.030 in (18 ± 0.075 mm) 50 ft (15.24 m)
Graphite purity 99 %, min 13.4 1.00 ± 0.030 in (25 ± 0.075 mm) 50 ft (15.24 m)
F2168−02 (2008)
TABLE 4 Tolerances for Type II Packing
Inside Diameter (i.d.) Outside Diameter (o.d.) Thickness
+0.010 in. (0.25 mm) +0.000 in. (0.000 mm) ±0.020 in. (0.50 mm)
to 1 in. (25 mm) o.d.
-0.000 in. (0.000 mm) -0.010 in. (0.25 mm)
1 in. (25 mm) and above +0.015 in. (0.38 mm) +0.000 in. (0.000 mm) ±0.030 in. (0.75 mm)
o.d. -0.000 in. (0.000 mm) -0.015 in. (0.38 mm)
10. Workmanship, Finish, and Appearance inhibiting treatment or the added mass of the corrosion
inhibitor shall be determined and subtracted from the base
10.1 Workmanship—The packing shall be free from extra-
mass of the sample.
neous material and visual defects that may affect its
serviceability, as defined in Table 5.
13.4 Graphite Purity—The sample shall be dried to a
constant mass at 300 6 5°F (149 6 3°C) before testing. For
11. Quality Assurance
Grade A packing only, the test shall be conducted before the
corrosion-inhibiting treatment or the added mass of the corro-
11.1 Quality Systems—Manufacturers shall be prepared to
document use of a quality system such as compliance with an sion inhibitor shall be determined and subtracted from the base
mass of the sample. The percent carbon shall be based upon
ISO 9000 series program or similar program.
mass of the dried sample. This determination shall be made in
12. Specimen Preparation
accordancewithTestMethodsD3178oranalternatemethodof
analysis with equal or improved accuracy and precision (see
12.1 Specimen Preparation—Buyerandsellershallagreeon
Table 1).
specimen preparation.
13.5 Bulk Density—The bulk density of theType I andType
13. Test Methods
II materials shall be determined in accordance with Test
13.1 Tests—In the event tests are required as part of the
Method C559.
purchasing requirements (see 5.1.5), tests shall be made in
13.6 Detrimental Material Tests—For determination of the
accordance with the following tests or by way of alternate
detrimental materials listed in Table 2 for Class 2 only, the test
methods of analysis with equal to or improved accuracy and
methods of Table 6 or alternate methods of equal or improved
precision. The use of an alternate analytical method requires
accuracy and precision shall be used.
the prior written consent of the purchasing party before
acceptance will be allowed. Except for the corrosion-inhibiting
14. Inspection and Testing
treatment exceptions of 13.3 and 13.4, all testing shall be
performed on final product after completion of all processing,
14.1 Inspection and testing of the material should be agreed
including application of any binders and, if required, corrosion
upon between the purchaser and the supplier as part of the
inhibitors.
purchase contract (see 5.1.5).
13.2 Size—The size shall be determined by measuring each
15. Rejection
sample selected for visual examination (see Table 4).
13.3 Ash Content—The ash content shall be determined in 15.1 Materials that fail to conform to the requirements of
accordance with Test Method C561 (see Table 1). For GradeA this specification shall be rejected. Rejection shall be reported
packing only, the test shall be conducted before the corrosion- to the producer or supplier promptly and in writing. In case of
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 0.005 in. in depth resulting from normal production and handling are
acceptable).
Split rings not cut cleanly.
Lack of corrosion inhibitor (Grade A only).
Wrong corrosion inhibitor (Grade A only).
Presence of corrosion inhibitor (Grade B only).
Cracking (crevices of no appreciable width associated with folds (accordion creases), ply terminations, or plies of
die molded ribbon packing rings are acceptable.)
F2168−02 (2008)
TABLE 6 Detrimental Materials Tests
been met. When specified in the purchase order or contract, a
Element Preparation/Analysis Test Methods report of the test results shall be furnished.
Chlorine (Cl), (l) pyrohydrolysis (C889)/ion chromatographic analysis
16.2 Detrimental Materials Control—For Class 2 material
bromine
only, the vendor shall provide certification that the limits of
(Br)
(2) D129/D512
Table 2 have been met and that low melting metals (Sb,As, Bi,
(3) D1246 (for bromine)
Cd, Pb, Sn, Ga, In,Ag, Hg and Zn [Zn for Grade B only]) have
not been added as intentional constituents. In lieu of specific
Fluorine (F) (l) pyrohydrolysis (C889)/selective ion electrode or
ion chromatographic analysis
test results for the lot to be delivered, certifications shall be
(2) D129/D1179
based on tests of both raw materials and production lots of
(3) D3761 (sample preparation and analysis)
similar finished packing material over an extended time period
Sulfur (S) (1) high temperature combustion in 100 % oxygen/
(not exceeding three years between tests). Any change to
nondispersive infrared analysis or ion chromato-
manufacturing processing that affects product composition,
graphic
includingchangestorawmaterial,binders,orinhibitors(Grade
analysis
(2) C816 (sample preparation and analysis)
A) shall require additional testing to form the basis for future
(3) D4239 Method 3 (sample preparation and
certifications.
analysis)
17. Product Marking
Mercury (Hg) (1) direct analysis of volatile elements (Hg) by
emission spectrographic method
17.
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.