ASTM F477-02e1

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An American National Standard
e1
Designation: F 477 – 02
Standard Specification for
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Elastomeric Seals (Gaskets) for Joining Plastic Pipe
This standard is issued under the fixed designation F 477; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
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e NOTE—Table 2 was editorially updated in October 2002.
1. Scope D573 Test Method for Rubber—Deterioration in an Air
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Oven
1.1 This specification covers elastomeric seals (gaskets)
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D883 Terminology Relating to Plastics
used to seal the joints of plastic pipe used for gravity,
D1149 Test Method for Rubber Deterioration—Surface
low-pressure, and high-pressure applications. This refers to
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Ozone Cracking in a Chamber
push-onjointswhichrequirenointernalorexternalpressureto
D1229 Test Method for Rubber Property—Compression
effect the initial seal.
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Set at Low Temperatures
1.2 Requirements are given for natural or synthetic rubber
D1349 Practice for Rubber—Standard Temperatures for
gaskets, or a combination of both.
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Testing
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NOTE 1—Oil-resistant gaskets are available for those applications
D1414 Test Methods for Rubber O-Rings
where exposure to solvents or oil may occur. The user should contact the
D1415 Test Method for Rubber Property—International
gasket manufacturer for recommendations.
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Hardness
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1.3 Thetextofthisspecificationreferencesnotes,footnotes,
D1566 Terminology Relating to Rubber
and appendixes which provide explanatory material. These
D 2240 Test Method for Rubber Property—Durometer
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notesandfootnotes(excludingthoseintablesandfigures)shall
Hardness
not be considered as requirements of the specification.
F913 Specification for Thermoplastic Elastomeric Seals
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1.4 The following precautionary caveat pertains only to the
(Gaskets) for Joining Plastic Pipe
test method portion, Section 7, of this specification: This
2.2 NSF Standards:
standard does not purport to address all of the safety concerns,
StandardNo.14 forPlasticPipingComponentsandRelated
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if any, associated with its use. It is the responsibility of the user
Materials
of this standard to consult and establish appropriate safety and
Standard No. 61 for Drinking Water Systems Components-
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health practices and determine the applicability of regulatory
Health Effects
limitations prior to use.
3. Terminology
2. Referenced Documents
3.1 Definitions—Terms relating to rubber or elastomer shall
2.1 ASTM Standards:
beasdefinedinTerminologyD1566.Termsrelatingtoplastics
D395 Test Methods for Rubber Property—Compression
shall be as defined in Terminology D883.
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Set
4. Composition and Manufacture
D412 Test Methods for Vulcanized Rubber and Thermo-
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plastic Elastometers—Tension
4.1 All gaskets shall be extruded or molded in such a
D471 Test Method for Rubber Property—Effect of Liq-
mannerthatanycrosssectionwillbedense,homogeneous,and
2
uids
free of porosity, blisters, pitting, or other imperfections. The
D 518 Test Method for Rubber Deterioration—Surface
gasket shall be fabricated from a high-grade elastomer mate-
2
Cracking
rial. The basic polymer shall be natural rubber, synthetic
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Annual Book of ASTM Standards, Vol 08.01.
1 4
This specification is under the jurisdiction ofASTM Committee F17 on Plastic Annual Book of ASTM Standards, Vols 09.01.
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Piping Systems and is the direct responsibility of Subcommittee F17.20 on Joining. Annual Book of ASTM Standards, Vol 09.02.
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Current edition approved May 10, 2002. Published July 2002. Originally Annual Book of ASTM Standards, Vol 08.04.
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published as F477–76. Last previous edition F477–99. Available from the National Sanitation Foundation, P.O. Box 1468,AnnArbor,
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Annual Book of ASTM Standards, Vol 09.01. MI 48106.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F 477–02
TABLE 2 Physical Requirements for Thermoplastic Elastomeric
rubber, a blend of both, or a thermoplastic elastomer, meeting
Seals for Plastic Pipe
the requirements prescribed in Sections 5 and 6.
4.2 Where a splice is used in the manufacture of the gasket,
Low-Head High-Head
thestrengthshallbesuchthatthegasketshallwithstand100%
Application Application
(Below 150 (150 kPa or
elongationoverthepartofthegasketwhichincludesthesplice
kPa or 50-ft 50-ft Head
with no visible separation of the splice. While in a stretched
Head) and Above)
position the gasket shall be rotated in the spliced area a
Original Properties:
minimum of 180° in each direction in order to inspect for
Tensile strengt
...