ASTM C1518-02

Standard Specification for Precured Elastomeric Silicone Joint Sealants

SCOPE
1.1 Precured Elastomeric Silicone Joint Sealants, hereinafter referred to as seal, are manufactured in flat, cured, extruded shapes and are primarily used to span joint openings in construction. This specification describes the properties of applied, flat shaped precured elastomeric Silicone Joint Sealants, hereinafter referred to as applied seal, that bridge joint openings and are adhered to joint substrates utilizing a liquid applied silicone adhesive sealant, specified by the manufacturer, hereinafter referred to as adhesive to construction substrates, to seal building openings such as panel joints, metal flashing joints, or other building openings in place of conventional liquid applied sealants.
1.2 Seals are applied in three different configurations:
1.2.1 As a bridge joint, the seal is applied flat on the surface to cover a joint opening. See Fig. 1.
1.2.2 As a beveled bridge joint, the seal is applied on the beveled edge of a substrate to bridge a joint opening. See Fig. 2.
1.2.3 As a U-joint, the seal is applied in a U-configuration within a joint. See Fig. 3.
1.3 This specification is for a flat extruded shape. A three-dimensional shape used at a joint cross section or termination is being considered for future inclusion in the specification.
1.4 An applied seal meeting the requirements of this specification shall be designated by the manufacturer as to movement class and tear class as described in Section 5.
1.5 The values stated in SI units are to be regarded as the standard. The values given in parenthesis are for information only.

General Information

• Status: Historical
• Publication Date: 09-Jan-2002
• ICS: 83.060 - Rubber
• Technical Committee: C24 - Building Seals and Sealants
• Drafting Committee: C24.10 - Specifications, Guides and Practices

Relations

• Replaced By: ASTM C1518-04 - Standard Specification for Precured Elastomeric Silicone Joint Sealants
• Effective Date: 01-May-2004
• Referred By: ASTM C1472-16(2022) - Standard Guide for Calculating Movement and Other Effects When Establishing Sealant Joint Width
• Effective Date: 10-Jan-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C 1518 – 02
Standard Specification for
Precured Elastomeric Silicone Joint Sealants
This standard is issued under the fixed designation C 1518; 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.
1. Scope 2. Referenced Documents
1.1 Precured Elastomeric Silicone Joint Sealants, hereinaf- 2.1 ASTM Standards:
ter referred to as seal, are manufactured in flat, cured, extruded C 717 Terminology of Building Seals and Sealants
shapes and are primarily used to span joint openings in C 1523 Test Method for Determining Modulus, Tear and
construction. This specification describes the properties of Adhesion Properties of Precured Elastomeric Joint Seal-
applied, flat shaped precured elastomeric Silicone Joint Seal- ants
ants, hereinafter referred to as applied seal, that bridge joint D 1566 Terminology Relating to Rubber
openings and are adhered to joint substrates utilizing a liquid G 113 Terminology Relating to Natural and Artificial
applied silicone adhesive sealant, specified by the manufac- Weathering Tests of Nonmetallic Materials
turer, hereinafter referred to as adhesive to construction sub- G 151 Practice for Exposing Nonmetallic Materials in Ac-
strates, to seal building openings such as panel joints, metal celerated Test Devices That Use Laboratory Light
flashing joints, or other building openings in place of conven- Sources
tional liquid applied sealants. G 154 Practice for Operating Fluorescent Light Apparatus
1.2 Seals are applied in three different configurations: for UV Exposure of Nonmetallic Materials
1.2.1 As a bridge joint, the seal is applied flat on the surface G 155 Practice for Operating Xenon Arc Light Apparatus
to cover a joint opening. See Fig. 1. for Exposure of Nonmetallic Materials
1.2.2 As a beveled bridge joint, the seal is applied on the
3. Terminology
beveled edge of a substrate to bridge a joint opening. See Fig.
3.1 Definitions:
2.
1.2.3 As a U-joint, the seal is applied in a U-configuration 3.1.1 Refer to Terminology C 717 for definitions of the
following terms used in this specification: cohesive failure,
within a joint. See Fig. 3.
adhesive failure, elastomeric, elongation, joint, modulus,
1.3 This specification is for a flat extruded shape. A three-
dimensional shape used at a joint cross section or termination primer, seal, sealant, substrate.
3.1.2 Refer to Terminology G 113 for definitions related to
is being considered for future inclusion in the specification.
1.4 An applied seal meeting the requirements of this speci- artificial weathering.
3.1.3 Refer to Terminology D 1566 for tear.
fication shall be designated by the manufacturer as to move-
ment class and tear class as described in Section 5.
4. Significance and Use
1.5 The values stated in SI units are to be regarded as the
4.1 This specification describes several classifications of
standard. The values given in parenthesis are for information
applied seals as described in Section 5. The purchaser or design
only.
professional shall recognize that not all materials meeting this
This specification is under the jurisdiction of ASTM Committee C24 on
Building Seals and Sealants and is the direct responsibility of Subcommittee C24.10 Annual Book of ASTM Standards, Vol 04.07.
on Specifications, Guides and Practices. Annual Book of ASTM Standards, Vol 09.01.
Current edition approved Jan. 10, 2002. Published April 2002. Annual Book of ASTM Standards, Vol 14.04.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C1518–02
subjecting joint specimens to each of the following: three joint
specimens to frozen temperature conditioning as described in
Test Method C 1523 (8.2.3) for 24 h; three joint specimens to
heat conditioning as described in Test Method C 1523 (8.2.4)
for 24 h; and three joint specimens to Artificial Weathering in
Accordance with Practice G 151 and Practice G 154, or Prac-
tice G 155 as described in Test Method C 1523 (8.2.5) for 2500
h. After each type of conditioning, the specimen shall with-
stand a strain and the holding time at that strain for one hour to
FIG. 1 Bridge Joint Configuration
X % elongation, where X is 12.5 % or greater, in increments of
12.5 % to max 200 %. (Test Method C 1523, 9.1)
5.1.2 Immediately following 5.1.1 the same specimen shall
withstand 10 movement cycles of X % elongation where X is
the percentage used in 5.1.1 and relaxation to 0 %.
5.2 Tear Class NT, PT and Class T—Immediately following
5.1.2 the same specimen shall be tested for tear propagation as
described in Test Method C 1523 (9.4).
6. General Requirements
6.1 Stability—A seal when stored in the original package at
temperatures not exceeding 50°C (122°F) shall be capable of
FIG. 2 Beveled Bridge Joint Configuration
meeting the requirements of this specification for at least
twelve months after the date of manufacture.
6.2 Color and Texture—The color and texture of the ex-
posed seal surface shall be the color and texture that was
agreed upon between the purchaser and supplier.
6.3 Application—The seal system is intended for applica-
tion to cl
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