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Single-component Silicone Weather Sealant

Common Product
MasterFormat 07 92 00 Joint Sealants

This information reflects our best understanding of product composition in 2022.

Silicone sealants include both one-part and two-part products. This Common Product covers one-component silicone sealants used in a variety of weatherproofing applications such as perimeter sealing of doors and windows. They can be applied to a...

More about Single-component Silicone Weather Sealant

Silicone sealants include both one-part and two-part products. This Common Product covers one-component silicone sealants used in a variety of weatherproofing applications such as perimeter sealing of doors and windows. They can be applied to a variety of substrates including glass, various plastics, aluminum, steel, stone, brick, and concrete, and generally can be used for both structural and nonstructural glazing applications. They typically do not require the use of a primer, although primers may be used for some substrates. 

Silicones do not absorb ultraviolet (UV) radiation, so they do not degrade like other materials when subjected to sunlight. Thus, they are used in exterior applications requiring high resistance to UV radiation. Silicone weatherproofing sealants are also resistant to ozone, rain, snow, and extreme temperatures and humidity. These sealants are composed of reactive siloxanes and silanes that cure upon contact with moisture in the air. Silicone sealants can be classified as acid-cure (acetoxy) or neutral-cure (alkoxy). Both types release condensation products upon curing, but acid cure silicone sealants release acetic acid, which can be corrosive to some substrates. This CP covers neutral-cure sealants, which release less corrosive chemicals, such as methanol, upon curing. 

Name % Weight Whole Function GS Score Sources
Siloxanes and Silicones, di-Me, hydroxy-terminated
70131-67-8
36.30% Polymer Subscribe to view
Limestone
1317-65-3
33.09% Filler Subscribe to view
Dimethicone
63148-62-9
9.78% Plasticizer Subscribe to view
Aquafil
112945-52-5
7.10% Filler Subscribe to view
Methyltrimethoxysilane
1185-55-3
5.52% Crosslinker Subscribe to view
Titanium dioxide
13463-67-7
3.31% Pigment Subscribe to view
3-(2-(2-Aminoethyl)ethylamino)propyltrimethoxysilane
35141-30-1
1.10% Adhesion Promoter Subscribe to view
Stearic acid
57-11-4
1.10% Dispersant Subscribe to view
Diisopropoxytitanium bis(ethyl acetoacetate)
27858-32-8
0.88% Catalyst Subscribe to view
Carbon black
1333-86-4
0.61% Pigment Subscribe to view
Quartz
14808-60-7
0.61% Residual Subscribe to view
Octamethylcyclotetrasiloxane
556-67-2
0.61% Monomer Subscribe to view
Name % Weight Part % Weight Whole Function GS Score Sources
Siloxanes and Silicones, di-Me, hydroxy-terminated
70131-67-8
36.30% 36.30% Polymer Subscribe to view
Limestone
1317-65-3
33.09% 33.09% Filler Subscribe to view
Dimethicone
63148-62-9
9.78% 9.78% Plasticizer Subscribe to view
Aquafil
112945-52-5
7.10% 7.10% Filler Subscribe to view
Methyltrimethoxysilane
1185-55-3
5.52% 5.52% Crosslinker Subscribe to view
Titanium dioxide
13463-67-7
3.31% 3.31% Pigment Subscribe to view
3-(2-(2-Aminoethyl)ethylamino)propyltrimethoxysilane
35141-30-1
1.10% 1.10% Adhesion Promoter Subscribe to view
Stearic acid
57-11-4
1.10% 1.10% Dispersant Subscribe to view
Diisopropoxytitanium bis(ethyl acetoacetate)
27858-32-8
0.88% 0.88% Catalyst Subscribe to view
Carbon black
1333-86-4
0.61% 0.61% Pigment Subscribe to view
Quartz
14808-60-7
0.61% 0.61% Residual Subscribe to view
Octamethylcyclotetrasiloxane
556-67-2
0.61% 0.61% Monomer Subscribe to view

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Known or Potential Residuals

Known or Potential Residuals for Chemical
CASRN NAME GS SCORE TYPE FREQUENCY % Weight Chemical % Weight Product SOURCE
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Other Process Chemicals

CASRN NAME GS Score TYPE FREQUENCY % WT CHEM % WT PRODUCT SOURCES
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HBN Resources (3)

HBN Resources for Product
TYPE TITLE
Report Making Affordable Multifamily Housing More Energy Efficient: A Guide to Healthier Upgrade Materials
Tool Sealant Hazard Spectrum
Tool HBN's Transformation Targets: A Framework for Driving Market Change

Sources

Sources for Common Product Data
Source Uploaded Document Linked Document
CN108977164A
D4 Env Canada
Dispersing Agent
Dow WO2020263762A1
Dowsil 795 SDS
Dowsil 795 TDS
Dynasylan VTMO
Momentive US8217107B2
SCS2000 SDS
SCS2000 TDS
Sikasil WS-295 FPS Manufacturer Inventory
Sikasil WS-295 SDS
Sikasil WS-295 TDS
Silicon Compounds - Ullmanns
Silicones - Ullmanns
Tremsil 400 LEED Letter
Tremsil 400 SDS
Tremsil 400 TDS
Ullmann's - Sealing Materials
White 2010