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ASTM C603-04

(Test Method)

Standard Test Method for Extrusion Rate and Application Life of Elastomeric Sealants

Standard Test Method for Extrusion Rate and Application Life of Elastomeric Sealants

SIGNIFICANCE AND USE
The results obtained by this test method are simply a measure of the time required to extrude a known volume of sealant through a known orifice under a predetermined pressure.
This test method is not considered a measure of cure rate.
SCOPE
1.1 This test method covers two laboratory procedures for determining the extrusion rate and application life (or "pot life") of elastomeric chemically curing sealants for use in building construction.
Note 1—These sealants are supplied with various rheological properties ranging from pourable liquids to nonsagging pastes. Single-component sealants are supplied ready for use upon opening the container, and their rate of cure is determined by the climatic conditions to which they are exposed. Multicomponent sealants are supplied as a base component and a curing agent separately packaged. After mixing the two parts, the sealant is ready for application, and curing begins immediately.
1.2 The values stated in SI units are to be regarded as the standard. The values given in brackets are provided for information only.
1.3 There is no known ISO equivalent to this test method.
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Apr-2004
ICS
83.060 - Rubber
91.100.50 - Binders. Sealing materials
Technical Committee
C24 - Building Seals and Sealants
Drafting Committee
C24.20 - General Test Methods
Current Stage
Ref Project

Relations

Replaces
ASTM C603-90(1997)e1 - Standard Test Method for Extrusion Rate and Application Life of Elastomeric Sealants
Effective Date
01-May-2004
Replaced By
ASTM C603-04(2008) - Standard Test Method for Extrusion Rate and Application Life of Elastomeric Sealants
Effective Date
01-May-2008
Referred By
ASTM C1369-19 - Standard Specification for Secondary Edge Sealants for Structurally Glazed Insulating Glass Units
Effective Date
01-May-2004
Referred By
ASTM C1184-23 - Standard Specification for Structural Silicone Sealants
Effective Date
01-May-2004
Referred By
ASTM C1021-08(2023) - Standard Practice for Laboratories Engaged in Testing of Building Sealants
Effective Date
01-May-2004
Referred By
ASTM C1193-16(2023) - Standard Guide for Use of Joint Sealants
Effective Date
01-May-2004

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ASTM C603-04 - Standard Test Method for Extrusion Rate and Application Life of Elastomeric SealantsASTM C603-04 - Standard Test Method for Extrusion Rate and Application Life of Elastomeric Sealants
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ASTM C603-04 - Standard Test Method for Extrusion Rate and Application Life of Elastomeric Sealants
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C603–04
Standard Test Method for
Extrusion Rate and Application Life of Elastomeric
1
Sealants
This standard is issued under the fixed designation C 603; 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 (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.
1. Scope 4. Significance and Use
1.1 This test method covers two laboratory procedures for 4.1 The results obtained by this test method are simply a
determining the extrusion rate and application life (or “pot measure of the time required to extrude a known volume of
life”) of elastomeric chemically curing sealants for use in sealant through a known orifice under a predetermined pres-
building construction. sure.
4.2 This test method is not considered a measure of cure
NOTE 1—These sealants are supplied with various rheological proper-
rate.
ties ranging from pourable liquids to nonsagging pastes. Single-
componentsealantsaresuppliedreadyforuseuponopeningthecontainer,
5. Apparatus
and their rate of cure is determined by the climatic conditions to which
they are exposed. Multicomponent sealants are supplied as a base
5.1 Caulking Gun, 177-mL [6-fl oz] capacity, air-powered.
component and a curing agent separately packaged. After mixing the two
5.2 Polyethylene Cartridge, 177-mL[6-fl oz], with the front
parts, the sealant is ready for application, and curing begins immediately.
end having an inside diameter of 13.7 6 0.05 mm [0.540 6
1.2 The values stated in SI units are to be regarded as the 0.002 in.].
standard. The values given in brackets are provided for 5.3 Air Supply, providing 345 kPa [50-psi] pressure and
information only. having the necessary connection fittings for attachment to the
1.3 There is no known ISO equivalent to this test method. air-powered caulking gun.
1.4 This standard does not purport to address all of the 5.4 Timing Device (clock or watch), calibrated in seconds.
safety concerns, if any, associated with its use. It is the 5.5 500-mL [1-pt] Container
responsibility of the user of this standard to establish appro-
6. Standard Test Conditions
priate safety and health practices and determine the applica-
6.1 Unless otherwise specified by those authorizing the
bility of regulatory limitations prior to use.
tests, standard conditions for both tests are room temperature
2. Referenced Documents
of 23 6 2°C [73.4 6 3.6°F] and 50 6 5 % relative humidity.
2
2.1 ASTM Standards:
7. Procedure
C 717 Terminology of Building Seals and Sealants
7.1 Extrusion Rate of Single-Component Sealant—First
3. Terminology
condition the unopened container for at least 16 h at standard
3.1 Definitions—For definitions of terms used in test conditions. Then place a sufficient amount of sealant into the
method, see Terminology C 717. 177-mL[6-fl oz] cartridge to fill it completely with the plunger
in place, fully retracted. Using no nozzle on the cartridge, gun
the sealant at 345 kPa [50-psi] pressure into the 500-mL [1-pt]
container, measuring the time in seconds required to empty the
1
ThistestmethodisunderthejurisdictionofASTMCommitteeC24onBuilding
cartridge.
Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on
General Test Methods.
NOTE 2—When the printed instructions of the sealant manufacturer so
Current edition approved May 1, 2004. Published May 2004. Originally
e1
recommended, heat the sealant before extruding it into the container.
approved in 1969. Last previous edition approved in 1997 as C 603 - 90 (1997) .
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7.2 Extrusion Rate or Application Life or both, of Mixed
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Multicomponent Sealant—First condition the unopened con-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. tainers of both sealant and curing agent for at least 16 h at
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C603–04
standard conditions. Then mix 400 g of the sealant with the 8.1.1 The trade name (or other identification) of the sealant.
proper amount of curing agent, stirring the mixture by hand for
8.1.2 The time, in seconds, required to empty the cartridge
5 min. Place a sufficient amount of the mixed compound into
(the extrusion rate), and
the 177-mL [6-fl oz] cartridge to fill it completely with the
8.1.3 Any variation, specified or otherwise, from the above
plunger in place, fully retracted, and set th
...

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5.1 It is known that solar radiation contributes to the degradation of sealants in exterior building joints. The use of a laboratory accelerated weathering machine with actinic radiation, moisture and heat appears to be a feasible means to give indications of early degradation by the appearance of sealant cracking. However, simulated weather factors in combination with extension may produce more severe degradation than weather factors only. Therefore, the effect of the weathering test is made more sensitive by the addition of the bending of the specimen at cold temperature.
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1.1 This specification covers nonvulcanized (uncured) rubber sheet made of EPDM (ethylene-propylene-diene terpolymer) or CR (polychloroprene) intended for use as watertight roof flashing exposed to the weather.  
1.2 The tests and property limits used to characterize these flashing materials are specific for each classification and are minimum values to make the product fit for its intended purpose.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
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1.5 The following precautionary caveat pertains to the test methods portion only, Section 8, of this specification: 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.  
1.6 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.

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