ASTM C907-17(2018)

Standard Test Method for Tensile Adhesive Strength of Preformed Tape Sealants by Disk Method

SIGNIFICANCE AND USE
5.1 Preformed tape sealants are tacky, deformable solids, that are used under compression between two or more substrates, in various sealing applications where the surfaces may be of similar or dissimilar materials. This procedure measures the tensile strength of the preformed tape sealant. It also provides an indication of the cohesive nature and adhesive bonding properties of the preformed tape sealant. This procedure is not intended to simulate actual use conditions.
SCOPE
1.1 This test method covers a laboratory procedure for determining the tensile adhesive strength of a preformed tape sealant. The type of failure can be determined, and the degree of cohesive/adhesive failure can be estimated.  
1.2 The values stated in metric (SI) units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.  
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

• Status: Published
• Publication Date: 31-Dec-2017
• ICS: 91.100.50 - Binders. Sealing materials
• Technical Committee: C24 - Building Seals and Sealants
• Drafting Committee: C24.30 - Adhesion

Relations

• Replaces: ASTM C907-17 - Standard Test Method for Tensile Adhesive Strength of Preformed Tape Sealants by Disk Method
• Effective Date: 01-Jan-2018
• Refers: ASTM C717-19 - Standard Terminology of Building Seals and Sealants
• Effective Date: 01-Mar-2019
• Refers: ASTM C717-18 - Standard Terminology of Building Seals and Sealants
• Effective Date: 01-Mar-2018
• Refers: ASTM C717-17a - Standard Terminology of Building Seals and Sealants
• Effective Date: 01-Nov-2017
• Refers: ASTM C717-17 - Standard Terminology of Building Seals and Sealants
• Effective Date: 01-Jan-2017
• Refers: ASTM C717-16a - Standard Terminology of Building Seals and Sealants
• Effective Date: 15-Nov-2016
• Refers: ASTM C717-16 - Standard Terminology of Building Seals and Sealants
• Effective Date: 01-Sep-2016
• Refers: ASTM C717-14a - Standard Terminology of Building Seals and Sealants
• Effective Date: 01-May-2014
• Refers: ASTM C717-14 - Standard Terminology of Building Seals and Sealants
• Effective Date: 01-Feb-2014
• Refers: ASTM C717-13 - Standard Terminology of Building Seals and Sealants
• Effective Date: 01-Nov-2013
• Refers: ASTM C717-12b - Standard Terminology of Building Seals and Sealants
• Effective Date: 01-Dec-2012
• Refers: ASTM C717-12a - Standard Terminology of Building Seals and Sealants
• Effective Date: 01-May-2012
• Refers: ASTM C717-12 - Standard Terminology of Building Seals and Sealants
• Effective Date: 15-Jan-2012
• Refers: ASTM C717-11a - Standard Terminology of Building Seals and Sealants
• Effective Date: 01-Mar-2011
• Refers: ASTM C717-11 - Standard Terminology of Building Seals and Sealants
• Effective Date: 15-Jan-2011

Overview

ASTM C907-17(2018): Standard Test Method for Tensile Adhesive Strength of Preformed Tape Sealants by Disk Method provides a laboratory procedure to determine the tensile adhesive strength of preformed tape sealants. These tape sealants are tacky, deformable solids commonly used to seal joints between surfaces of similar or dissimilar materials by applying them under compression. This standard enables manufacturers, laboratories, and quality control professionals to evaluate both the maximum tensile strength and the adhesive/cohesive properties of tape sealants through controlled testing conditions.

This test method is crucial for benchmarking preformed tape sealant performance and ensuring consistent quality. While not intended to simulate all real-world application conditions, it offers a reliable metric for technical comparison and product specification.

Key Topics

• Tensile Adhesive Strength Measurement
  The disk method quantifies the force required to pull apart two substrates joined with a preformed tape sealant, using standardized apparatus and procedures.

• Failure Mode Analysis
  The method records the type and proportion of failure-adhesive (separation at the interface) versus cohesive (fracture within the tape)-providing insights into the bonding performance of the sealant.

• Controlled Laboratory Procedure
  All specimen conditioning, sample preparation, and testing are strictly defined, including environmental conditions (23 ± 2°C is standard), sample dimensions, and test speeds to enable reproducibility.

• Applicability to Multiple Substrates
  While aluminum disks are the standard test substrates, other materials may be substituted, allowing the method to be adapted for specific sealing applications.

• Repeatability and Reproducibility
  The standard defines expected variability within the same laboratory (repeatability) and among different labs (reproducibility), aiding in the development of more consistent products.

Applications

• Quality Control and Assurance
  Manufacturers use ASTM C907 for production lot verification, ensuring that preformed tape sealants maintain consistent tensile adhesive strength across batches.

• Product Development and Comparison
  Research and development teams can use this method to compare the performance of different tape sealant formulations or to benchmark against competitor products.

• Specification Compliance
  Construction engineers and material suppliers reference this standard when specifying or accepting sealants for critical sealing applications, such as in building envelopes, glazing, or automotive assemblies.

• Failure Investigation
  By identifying adhesive or cohesive failure modes, the test can help diagnose issues in field applications or in product complaints, guiding improvements in formulation or application processes.

Related Standards

• ASTM C717 - Terminology of Building Seals and Sealants
  Defines key terms such as adhesive failure, cohesive failure, and preformed tape sealant, ensuring common understanding across ASTM’s suite of sealant standards.

• No Equivalent ISO Standard
  According to the jurisdiction subcommittee, there is currently no comparable ISO standard for testing tensile adhesive strength of preformed tape sealants by the disk method.

• Other ASTM Sealant Test Methods
  This standard is part of a broader framework of ASTM standards related to sealant performance, contributing to comprehensive quality management in construction and manufacturing.

Practical Value

Using ASTM C907-17(2018) for tensile adhesive strength testing of preformed tape sealants:

• Ensures material reliability and consistent sealing performance
• Helps meet regulatory and project specification requirements
• Facilitates product development and technical differentiation
• Supports forensic analysis and resolution of field issues

By applying this recognized standard methodology, organizations benefit from reliable, comparable data in quality control, product design, and material selection for preformed tape sealants in diverse sealing applications.

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: C907 − 17 (Reapproved 2018)
Standard Test Method for
Tensile Adhesive Strength of Preformed Tape Sealants by
Disk Method
This standard is issued under the fixed designation C907; 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 4. Summary of Test Method
1.1 This test method covers a laboratory procedure for
4.1 The preformed tape sealant is compressed between two
determining the tensile adhesive strength of a preformed tape aluminum disks.The disks are pulled apart in a tensile tester to
sealant. The type of failure can be determined, and the degree
failure. The maximum tensile strength and failure mode are
of cohesive/adhesive failure can be estimated. recorded.
1.2 The values stated in metric (SI) units are to be regarded
5. Significance and Use
as the standard. The values given in parentheses are provided
for information purposes only.
5.1 Preformed tape sealants are tacky, deformable solids,
that are used under compression between two or more
1.3 The subcommittee with jurisdiction is not aware of any
substrates, in various sealing applications where the surfaces
similar ISO standard.
may be of similar or dissimilar materials. This procedure
1.4 This standard does not purport to address all of the
measures the tensile strength of the preformed tape sealant. It
safety concerns, if any, associated with its use. It is the
also provides an indication of the cohesive nature and adhesive
responsibility of the user of this standard to establish appro-
bonding properties of the preformed tape sealant. This proce-
priate safety, health, and environmental practices and deter-
dure is not intended to simulate actual use conditions.
mine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accor-
6. Apparatus and Accessory Materials
dance with internationally recognized principles on standard-
6.1 Test Fixture, fabricated of aluminum (mill finish), in
ization established in the Decision on Principles for the
accordance with Fig. 1.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
NOTE 1—Other substrates may be substituted in 6.1.
Barriers to Trade (TBT) Committee.
6.2 Tensile Testing Machine, or equivalent, with a jaw
separation rate of 51 mm (2 in.)/min.
2. Referenced Documents
6.3 Auxiliary Hardware, for attachment of the test fixture to
2.1 ASTM Standards:
the tensile tester.
C717 Terminology of Building Seals and Sealants
6.4 Knife.
3. Terminology
6.5 Compression Device, such as a vise, press, or equiva-
3.1 Definitions—The definitions of the following terms used
lent.
in this test method are found in Terminology C717: adhesive
6.6 Device, for recording the tension load in newtons (or
failure; cohesive failure; preformed tape sealant; sealant;
pounds-force).
standard conditions; and substrate.
6.7 Solvent, such as xylol or toluol.
6.8 Wiping Cloths, lint-free.
ThistestmethodisunderthejurisdictionofASTMCommitteeC24onBuilding
Seals and Sealants and is the direct responsibility of Subcommittee C24.30 on
7. Sampling
Adhesion.
Current edition approved Jan. 1, 2018. Published June 2018. Originally approved
7.1 Samples to be tested shall be taken from a fresh roll of
in 1979. Last previous edition approved in 2017 as C907 – 17. DOI: 10.1520/
preformed tape sealant after first removing and discarding the
C0907-17R18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or first 600 mm (2 ft) of the roll.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
7.2 Condition the sample at standard conditions for a
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. minimum of 24 h before preparing the test specimens.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C907 − 17 (2018)
9. Conditioning
9.1 Condition the test specimens as prepared in Section 8,
for1hat23 6 2°C (73.4 6 3.6°F) before testing.
9.2 Other conditioning periods may be included if and as
desired.
10. Procedure
10.1 Activate the tensile testing machine for recording the
force required to pull the specime
...