Product Information
Silicone
Sealants
FEATURES
• Odorless, non-corrosive cure
system
• Cures to form an extremely tough
elastomeric rubber ensuring
adurable, flexible, watertight bond
BENEFITS
• Excellent weatherability and high
resistance to ultraviolet radiation,
heat and humidity, ozone and
temperature extremes
• Excellent mechanical properties
• Successfully tested for use in
protective glazing applications
• Excellent unprimed adhesion to
wide range of substrates including
coated, enameled and reflective
glasses, anodized and polyester
coated or painted aluminum profiles
including most fluoropolymerbased
paints such as Kynar™
• Meets global standards for
structural glazing (American,
China, Europe)
COMPOSITION
• One-part, neutral-cure elastomeric
sealant
Dow Corning® 995 Silicone
Structural Glazing Sealant
High ultimate tensile strength sealant ideally suited for structural
bonding and protective glazing applications
APPLICATIONS
• Silicone structural glazing and protective glazing applications
TYPICAL PROPERTIES
Specification Writers: Please contact your local Dow Corning Sales Application Engineer or
Dow Corning Customer Service before writing specifications on this product.
Method Test Unit Result
As Supplied
Color Black, gray, white
MIL-S-8802 Tack-Free Time, 50% RH minutes 65
Curing Time 25ºC (77ºF) at 50% RH days 7-14
Full Adhesion days 14-21
Flow, Sag or Slump inches 0.1
Working Time minutes 10-20
Specific Gravity 1.339
VOC Content1 g/L 30
As Cured – After 7 days at 25ºC (77ºF), 50% RH
ASTM2 D2240 Durometer Hardness, Shore A points 40
ASTM D0412 Ultimate Tensile Strength psi (MPa) 350 (2.41)
Ultimate Elongation % 525
ASTM D0624 Tear Strength, die B ppi 49
ASTM C0794 Peel Strength ppi 40
As Cured – After 21 days at 25ºC (77ºF), 50% RH
ASTM C1135 Tensile at 25% Elongation psi (MPa) 43 (0.30)
ASTM C1135 Tensile at 50% Elongation psi (MPa) 65 (0.43)
Ultimate Tensile Strength psi (MPa) 170 (1.17)
ASTM C719 Joint Movement Capability % ±50
1Based on South Coast Air Quality Management District of California. Maximum VOC is listed both inclusive and
exclusive of water and exempt compounds. For a VOC data sheet for a specific sealant color, please send your
request toproduct.inquiry@dowcorning.com.
2ASTM: American Society for Testing and Materials.
DESCRIPTION
Dow Corning® 995 Silicone Structural
Glazing Sealant is a one-component
neutral curing silicone sealant
designed specifically for structural
bonding applications of glass and
metal in factory or field situations.
The rate of surface cure and cure-indepth
of most one-component RTV
silicone sealants is affected by the temperature
and humidity of the environment.
However, an environment of
high temperatures in combination
with high humidity may slow the
surface cure rate of Dow Corning 995
Silicone Structural Glazing Sealant.
Colors
This product is available in black,
gray and white. Please contact your
local Dow Corning Sales Application
Engineer for local color range
availability.
APPROVALS/
SPECIFICATIONS
Dow Corning 995 Silicone Structural
Glazing Sealant has been internally
tested and is designed to meet or
exceed the test requirements of:
• Federal Specification TT-S-
001543A (COM-NBS) Class A for
silicone building sealant
• Federal Specification TT-S-00230C
(COM-NBS) Class A for onecomponent
building sealant
• ASTM Specification C-920 Type S,
Grade NS, Class 50, Use NT, G and A
• ASTM C1184 Standard
Specification for Structural
Silicone Sealant
• Chinese specification GB 16776
for structural glazing
• SNJF VEC
Dow Corning 995 Silicone Structural
Glazing Sealant exhibits a high level
of physical properties and adhesive
performance, which are retained even
after aging as detailed by EOTA ETAG
002 and prEN 13022 European
Standards.
HOW TO USE
Complete design and installation
guidelines are contained in the
Dow Corning Americas Technical
Manual, Form No. 62-1112. Specific
advice is available from your local
local Dow Corning Sales Application
Engineer.
Preparation
Clean all joints and glazing pockets,
removing all foreign matter and contaminants
such as grease, oil, dust,
water, frost, surface dirt, old sealants,
or glazing compounds and protective
coatings.
Application Method
Install back-up material or joint filler,
setting blocks, spacer shims and tapes.
Mask areas adjacent to joints to ensure
neat sealant lines. Primer is generally
not required on non-porous surfaces,
but may be necessary for optimal sealing
of certain porous surfaces. A test
placement is always recommended.
Apply Dow Corning 995 Silicone
Structural Glazing Sealant in a continuous
operation using a positive
pressure. (The sealant can be applied
using many types of air-operated guns
and most types of bulk dispensing
equipment). Before a skin forms
(typically within 10 minutes), tool the
sealant with light pressure to spread
the sealant against the backing material
and joint surfaces. Remove masking
tape as soon as the bead is tooled.
HANDLING PRECAUTIONS
PRODUCT SAFETY INFORMATION
REQUIRED FOR SAFE USE IS NOT
INCLUDED IN THIS DOCUMENT.
BEFORE HANDLING, READ PRODUCT
AND MATERIAL SAFETY
DATA SHEETS AND CONTAINER
LABELS FOR SAFE USE, PHYSICAL
AND HEALTH HAZARD INFORMATION.
THE MATERIAL SAFETY
DATA SHEET IS AVAILABLE ON
THE DOW CORNING WEBSITE AT
WWW.DOWCORNING.COM, OR
FROM YOUR DOW CORNING
SALES APPLICATION ENGINEER,
OR DISTRIBUTOR, OR BY CALLING
DOW CORNING CUSTOMER
SERVICE.
USABLE LIFE AND
STORAGE
When stored at or below 30ºC (86ºF)
in the original unopened containers,
this product has a usable life of 18
months from the date of manufacture.
PACKAGING
This product is available in 305- and
310-mL (10.3- and 10.5-fl oz) disposable
cartridges, 7.5-L (2-gal) pails,
17-L (4.5-gal) bulk containers and
170-L (45-gal) drums, depending on
location of purchase. Please contact
your local Dow Corning Sales
Application Engineer for packaging
availability.
LIMITATIONS
Dow Corning 995 Silicone Structural
Glazing Sealant should not be applied:
• To building materials that bleed
oils, plasticizers or solvents –
materials such as impregnated
wood, oil-based caulks, green or
partially vulcanized rubber gaskets
or tapes
• In totally confined spaces as the
sealant requires atmospheric
moisture for cure
• When surface temperatures exceed
60ºC (140ºF)
• Where painting of the sealant is
required, as the paint film may
crack and peel
• To surfaces in contact with food –
this sealant does not comply with
Federal Food and Drug
Administration food-additive
regulations
• In below-grade applications
• For use as an interior penetration
fire stop sealing system
• In horizontal floor joints where
abrasion and physical abuse are
likely to be encountered
• To frost-laden or damp surfaces
• For continuous immersion in water
This product is neither tested nor
represented as suitable for medical or
pharmaceutical uses.
Dow Corning shall not be held liable
for any possible claims arising from
structural glazing use of this product
for projects that have not been
specifically approved by Dow Corning.
HEALTH AND
ENVIRONMENTAL
INFORMATION
To support customers in their product
safety needs, Dow Corning has an
extensive Product Stewardship organization
and a team of Product Safety
and Regulatory Compliance (PS&RC)
specialists available in each area.
For further information, please see
our website,www.dowcorning.com,
or consult your local Dow Corning
Sales Application Engineer.
LIMITED WARRANTY
INFORMATION – PLEASE
READ CAREFULLY
The information contained herein is
offered in good faith and is believed to
be accurate. However, because conditions
and methods of use of our
products are beyond our control, this
information should not be used in
substitution for customer’s tests to
ensure that Dow Corning’s products
are safe, effective, and fully satisfactory
for the intended end use. Suggestions
of use shall not be taken as inducements
to infringe any patent.
Dow Corning’s sole warranty is that
the product will meet the Dow Corning
sales specifications in effect at the
time of shipment.
Your exclusive remedy for breach of
such warranty is limited to refund of
purchase price or replacement of any
product shown to be other than as
warranted.
DOW CORNING SPECIFICALLY
DISCLAIMS ANY OTHER EXPRESS
OR IMPLIED WARRANTY OF FITNESS
FOR A PARTICULAR PURPOSE
OR MERCHANTABILITY.
DOW CORNING DISCLAIMS LIABILITY
FOR ANY INCIDENTAL
OR CONSEQUENTIAL DAMAGES.
Printed in USA Dow Corning is a registered trademark of Dow Corning Corporation.
All other trademarks are the property of their respective owners.
Form No. 62-1260C-01 AGP8409 ©2000-2006 Dow Corning Corporation. All rights reserved.