ASTM C782-13(2023)
(Test Method)Standard Test Method for Softness of Preformed Tape Sealants
Standard Test Method for Softness of Preformed Tape Sealants
SIGNIFICANCE AND USE
5.1 Preformed tape sealants are tacky, deformable solids that are used under compression between two substrates in a variety of sealing applications. This procedure measures the softness of a preformed tape sealant and gives an indication of the preformed tape sealant's ease of compression during installation. The resistance to penetration may also give an indication of the toughness of the preformed tape sealant.
SCOPE
1.1 This test method describes a laboratory procedure for determining the softness of preformed tape sealants.
Note 1: Cone penetration methods applicable to greases and to petrolatum are described in Test Methods D217 and D937. Test Method D2451 also uses a penetration technique for determining the degree of set in sash glazing compounds.
1.2 The values stated in SI units are to be regarded as standard. Temperature values are also provided (in parentheses) in degrees Fahrenheit.
1.3 The subcommittee with jurisdiction is not aware of any similar ISO standard.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 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: C782 − 13 (Reapproved 2023)
Standard Test Method for
Softness of Preformed Tape Sealants
This standard is issued under the fixed designation C782; 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 D2451 Test Method for Degree of Set for Glazing Com-
pounds on Metal Sash (Withdrawn 2002)
1.1 This test method describes a laboratory procedure for
E2251 Specification for Liquid-in-Glass ASTM Thermom-
determining the softness of preformed tape sealants.
eters with Low-Hazard Precision Liquids
NOTE 1—Cone penetration methods applicable to greases and to
petrolatum are described in Test Methods D217 and D937. Test Method 3. Terminology
D2451 also uses a penetration technique for determining the degree of set
3.1 Definitions—The definition of the following term used
in sash glazing compounds.
in this test method is found in Terminology C717: preformed
1.2 The values stated in SI units are to be regarded as
tape sealant.
standard. Temperature values are also provided (in parenthe-
ses) in degrees Fahrenheit.
4. Summary of Test Method
1.3 The subcommittee with jurisdiction is not aware of any 4.1 The preformed tape sealant specimen is allowed to
similar ISO standard.
equilibrate at standard conditions. A standard needle under a
defined load is placed on the specimen for 5 s. The penetration
1.4 This standard does not purport to address all of the
of the needle into the preformed tape sealant is measured.
safety concerns, if any, associated with its use. It is the
Multiple readings are recorded and averaged.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
5. Significance and Use
mine the applicability of regulatory limitations prior to use.
5.1 Preformed tape sealants are tacky, deformable solids
1.5 This international standard was developed in accor-
that are used under compression between two substrates in a
dance with internationally recognized principles on standard-
variety of sealing applications. This procedure measures the
ization established in the Decision on Principles for the
softness of a preformed tape sealant and gives an indication of
Development of International Standards, Guides and Recom-
the preformed tape sealant’s ease of compression during
mendations issued by the World Trade Organization Technical
installation. The resistance to penetration may also give an
Barriers to Trade (TBT) Committee.
indication of the toughness of the preformed tape sealant.
2. Referenced Documents
6. Apparatus
2.1 ASTM Standards:
6.1 Needle Penetrometer, as described in Test Method D5,
C717 Terminology of Building Seals and Sealants
with a certified needle.
D5 Test Method for Penetration of Bituminous Materials
NOTE 2—Test Method D5 describes the needle method for determining
D217 Test Methods for Cone Penetration of Lubricating
the penetration of bituminous material; Test Method D1321 describes a
Grease
similar method for use with petroleum waxes, but a different needle is
D937 Test Method for Cone Penetration of Petrolatum
used.
D1321 Test Method for Needle Penetration of Petroleum
6.2 Stop Watch or Timing Mechanism, for the penetrometer.
Waxes
6.3 Thermometer, to measure the temperature of the test
specimen in the vicinity of the temperature of the test. For tests
This test method is under the jurisdiction of ASTM Committee C24 on Building
at 23 °C 6 0.5 °C (73 °F 6 1 °F) a thermometer conforming
Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on
to the requirements prescribed in Specification E2251 is
General Test Methods.
recommended, such as ASTM Saybolt Viscosity Thermometer
Current edition approved May 1, 2023. Published May 2023. Originally
approved in 1986. Last previous edition approved in 2018 as C782 – 13 (2018). 17C (or 17F) having a range from 19 °C to 27 °C (66 °F to 80
DOI: 10.1520/C0782-13R23.
°F).
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.
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C782 − 13 (2023)
7. Sampling 10.5 Adjust the apparatus to measure the distance through
which the needle penetrated the specimen. Record the amount
7.1 Samples to be tested shall be taken from
...
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