ASTM C1440-08(2013)e1
(Specification)Standard Specification for Thermoplastic Elastomeric (TPE) Gasket Materials for Drain, Waste, and Vent (DWV), Sewer, Sanitary and Storm Plumbing Systems
Standard Specification for Thermoplastic Elastomeric (TPE) Gasket Materials for Drain, Waste, and Vent (DWV), Sewer, Sanitary and Storm Plumbing Systems
ABSTRACT
This specification covers thermoplastic elastomeric (TPE) gasket materials for preformed elastomeric gaskets used in shielded and non-shielded mechanical couplings for gravity flow drain, waste, and vent (DWV), sewer, sanitary, and storm plumbing systems. Couplings include those that join similar and dissimilar piping sizes and materials. Gaskets shall be made of virgin thermoplastic elastomeric compound containing only clean reworked thermoplastic elastomer material. Gasket materials shall conform to specified values of the following physical requirements: hardness, elongation, tensile strength, heat aging, tear strength, water absorption, ozone resistance, compression set, oil immersion in IRM 903 oil, and stretch test for spliced gaskets.
SCOPE
1.1 This specification covers thermoplastic elastomeric (TPE) gasket materials for preformed elastomeric gaskets used in shielded and non-shielded mechanical couplings. These couplings are used in gravity flow drain, waste and vent (DWV), sewer, sanitary and storm plumbing systems. They include couplings to join similar and dissimilar piping sizes and material.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
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Designation:C1440 −08 (Reapproved 2013)
Standard Specification for
Thermoplastic Elastomeric (TPE) Gasket Materials for Drain,
Waste, and Vent (DWV), Sewer, Sanitary and Storm
Plumbing Systems
This standard is issued under the fixed designation C1440; 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.
ε NOTE—Editorial changes were made throughout in October 2013.
1. Scope D1149 Test Methods for Rubber Deterioration—Cracking in
an Ozone Controlled Environment
1.1 This specification covers thermoplastic elastomeric
D1415 Test Method for Rubber Property—International
(TPE) gasket materials for preformed elastomeric gaskets used
Hardness
in shielded and non-shielded mechanical couplings. These
D2240 Test Method for Rubber Property—Durometer Hard-
couplings are used in gravity flow drain, waste and vent
ness
(DWV), sewer, sanitary and storm plumbing systems. They
D5964 Practice for Rubber IRM 901, IRM 902, and IRM
include couplings to join similar and dissimilar piping sizes
903 Replacement Oils forASTM No. 1,ASTM No. 2, and
and material.
ASTM No. 3 Oils
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical 3. Terminology
conversions to SI units that are provided for information only
3.1 Definitions—Refer to Terminology A644 for definitions
and are not considered standard.
of the following terms used in this specification elastomer,
1.3 This standard does not purport to address all of the
elastomeric, elongation, gasket, hardness, preformed gasket-
safety concerns, if any, associated with its use. It is the
(see gasket), thermoplastic elastomer.
responsibility of the user of this standard to establish appro-
4. Materials and Manufacture
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
4.1 Gaskets shall be made of virgin thermoplastic elasto-
mericcompoundcontainingonlycleanreworkedthermoplastic
2. Referenced Documents
elastomer material from the manufacturer’s own production of
the same compound.
2.1 ASTM Standards:
A644 Terminology Relating to Iron Castings
4.2 Where splices are made in the gasket, the strength of the
D395 Test Methods for Rubber Property—Compression Set
splice shall be such that the gasket will withstand the stretch
D412 Test Methods forVulcanized Rubber andThermoplas-
test described in 8.9 with no visible separation or peeling.
tic Elastomers—Tension
4.3 Many thermoplastic elastomeric materials (TPE) are
D471 Test Method for Rubber Property—Effect of Liquids
temperature sensitive. Designed operating temperature range
D573 Test Method for Rubber—Deterioration in an Air
for the 87 Shore A TPE materials is 0° to 130° F (–18° to
Oven
55°C). These materials are not designed or intended for
D624 Test Method for Tear Strength of Conventional Vul-
prolonged operation outside this range.
canized Rubber and Thermoplastic Elastomers
5. Physical Properties
This Specification is under the jurisdiction of ASTM Committee A04 on Iron
5.1 Gaskets representative of the manufacturer’s production
Castings and is the direct responsibility of Subcommittee A04.75 on Gaskets and
shall be selected as specified in Section 7 and shall conform to
Coupling for Plumbing and Sewer Piping.
the requirements for physical properties listed in Table 1 when
Current edition approved May 1, 2013. Published May 2013. Originally
tested in accordance with the methods specified in Section 8.
approved in 1999. Last previous edition approved in 2008 as C1440 – 08. DOI:
10.1520/C1440-08R13.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 6. Workmanship, Finish, and Appearance
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.1 The surface of the gasket shall be smooth and free of
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. pitting, cracks, blisters, air marks, and any other imperfections
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C1440−08 (2013)
TABLE 1 Physical Requirements of Gasket Materials
8.3 Tear Strength—Test the gasket material for tear strength
ASTM Test in accordance with Test Method D624 using Die C.
A
Properties Tested TPE
Method
8.4 Compression Set—Test the gasket material for compres-
Hardness, Shore A (±5 pts) D2240 87 (5 s Delay)
sionsetusingTestMethodD395.Formaterialswithahardness
Elongation, min, % D412 250
Tensile Strength, min. psi (kPa) D412 1500 (10 342)
of 90 IRHD or higher Method A must be used. For materials
Heat Aging D573
with a hardness less than 90 IRHD Method B must be used.
96 h at 158 ± 4°F (70 ± 2°C)
Oven age samples for 22 h at 158° 6 2°F (70 6 1°C). When
Hardness increase, max, pts. Shore A 10
Loss in tensile strength, max, % 15
using Test Method A, there shall be a maximum dimensional
Loss in elongation, max, % 20
change of 12 %. When using Test Method B, there shall be a
Tear Strength, min. lbf/in (N/cm) D624 150(268)
maximum dimensional change of 25 %.
Water Absorption D471
7 days at 158
...
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