ASTM C765 - 97(2015)
Standard Test Method for Low-Temperature Flexibility of Preformed Tape Sealants
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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 is not intended to simulate an actual use condition, but it will give some indication of the flexibility and adhesion of a tape at low temperature. It can serve to differentiate between flexible tapes that can take some movement and those that tend to harden or embrittle on aging and crack or lose adhesion when flexed at low temperature. It will also aid in identifying sealants that have poor flexibility because they are overextended and contain a low level of binder as well as those sealants having binders that will embrittle at low temperature.
1. Scope
1.1 This test method covers a laboratory procedure for testing the low-temperature flexibility of preformed tape sealants.
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
C717 Terminology of Building Seals and Sealants
E145 Specification for Gravity-Convection and Forced-Ventilation Ovens
ICS Code
ICS Number Code 91.100.50 (Binders. Sealing materials)
UNSPSC Code
UNSPSC Code 31200000(Adhesives and sealants)
Referencing This Standard
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DOI: 10.1520/C0765-97R15
Citation Format
ASTM C765-97(2015), Standard Test Method for Low-Temperature Flexibility of Preformed Tape Sealants, ASTM International, West Conshohocken, PA, 2015, www.astm.org
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