Product Information

Dow Corning® 795

Silicone Building Sealant

FEATURES Neutral, one-part silicone sealant

• Suitable for most new construction
and remedial sealing applications APPLICATIONS
• Versatile – high performance struc- • Structural and nonstructural glazing
tural glazing and weathersealing • Structural attachment of many panel systems
from a single product • Panel stiffener applications
• Available in 11 standard colors; • Weathersealing of most common construction materials including glass,
custom colors also available aluminum, steel, painted metal, EIFS, granite and other stone, concrete,
brick and plastics
BENEFITS
TYPICAL PROPERTIES
• Excellent weatherability – virtually
Specification Writers: Please contact your local Dow Corning sales office or your Global
unaffected by sunlight, rain, snow,
Dow Corning Connection before writing specifications on this product.
ozone and temperature extremes of
-40°F (-40°C) to 300°F (149°C) Method Test Unit Result
• Excellent unprimed adhesion to a As Supplied
wide variety of construction mater- ASTM C 679 Tack-Free Time, 50% RH hours 3
ials and building components, Curing Time
including Kynar ®1 and anodized at 25°C (77°F) and 50% RH days 7-14
and coated aluminum2 Full Adhesion days 14-21
• Ease of application – ready to use ASTM C 639 Flow, Sag or Slump inches (mm) 0.1 (2.54)
as supplied Working Time minutes 20-30
• Ease of use – all-temperature As Cured – After 21 days at 25°C (77°F) and 50% RH
gunnability, easy tooling and low- ASTM D 2240 Durometer Hardness, Shore A points 35
odor cure byproduct ASTM C 794 Peel Strength lb/in (kg/cm) 32 (5.7)
• Meets global standards (Americas, ASTM C 1135 Tensile Adhesion Strength
Asia and Europe) at 25% extension psi (MPa) 45 (0.310)
at 50% extension psi (MPa) 60 (0.414)
COMPOSITION ASTM C 719 Joint Movement Capability percent ±50
• Neutral, one-part silicone sealant ASTM C 1248 Staining (granite, marble, lime-
stone, brick and concrete) None

As Cured – After 21 days at 25°C (77°F) and 50% RH followed by 10,000 hours in a
QUV weatherometer, ASTM G 53
ASTM C 1135 Tensile Adhesion Strength
at 25% extension psi (MPa) 35 (0.241)
at 50% extension psi (MPa) 50 (0.345)

DESCRIPTION original joint dimension when install-

®
Dow Corning 795 Silicone Building ed in a properly designed weatherseal
Sealant is a one-part, neutral-cure, joint. In a properly designed structur-
architectural-grade sealant that easily ally glazed joint, the sealant is strong
extrudes in any weather and cures enough to support glass and other
quickly at room temperature. panel materials under high windload.

This cold-applied, non-sagging silicone SPECIFICATIONS

material cures to a medium-modulus Dow Corning 795 Silicone Building
silicone rubber upon exposure to atmos- Sealant meets the requirements of:
1
pheric moisture. The cured sealant is • Federal Specification TT-S-
Kynar is a trademark of Atofina Chemicals Inc.
2
Contact your local Dow Corning sales office for durable and flexible enough to accom- 001543A (COM-NBS) Class A for
specifics. modate ±50 percent movement of silicone building sealants
• Federal Specification TT-S-00230C HANDLING PRECAUTIONS This product is neither tested nor
(COM-NBS) Class A for one- PRODUCT SAFETY INFORMATION represented as suitable for medical or
component building sealants REQUIRED FOR SAFE USE IS NOT pharmaceutical uses.
• ASTM Specification C 920 Type S, INCLUDED IN THIS DOCUMENT.
Grade NS, Class 25, Use NT, M, G, BEFORE HANDLING, READ HEALTH AND
A and O PRODUCT AND MATERIAL ENVIRONMENTAL
• ASTM Specification C 1184 for SAFETY DATA SHEETS AND INFORMATION
structural silicone sealants CONTAINER LABELS FOR SAFE
• Canadian Specification CAN2- To support customers in their product
USE, PHYSICAL AND HEALTH safety needs, Dow Corning has an
19.13-M82 HAZARD INFORMATION. THE extensive Product Stewardship organ-
MATERIAL SAFETY DATA SHEET ization and a team of Product Safety
COLORS IS AVAILABLE FROM YOUR and Regulatory Compliance (PS&RC)
Dow Corning 795 Silicone Building DOW CORNING REPRESEN- specialists available in each area.
Sealant is available in 11 colors: black, TATIVE, OR DISTRIBUTOR, OR
white, gray, limestone, bronze, sand- BY CALLING YOUR GLOBAL For further information, please see
stone, adobe tan, dusty rose, rustic DOW CORNING CONNECTION. our website, www.dowcorning.com,
brick, blue spruce and charcoal. or consult your local Dow Corning
Custom colors may be ordered to USABLE LIFE AND representative.
match virtually any substrate. STORAGE
When stored at or below 27°C (80°F), LIMITED WARRANTY
HOW TO USE Dow Corning 795 Silicone Building INFORMATION – PLEASE
Please consult the Dow Corning Sealant has a shelf life of 12 months READ CAREFULLY
Americas Technical Manual, Form No. from the date of manufacture. Refer to The information contained herein is
62-1112, for detailed information on product packaging for “Use By Date.” offered in good faith and is believed to
state-of-the-art application methods
be accurate. However, because con-
and joint design. Please contact your PACKAGING
local Dow Corning sales office for ditions and methods of use of our
Dow Corning 795 Silicone Building products are beyond our control, this
specific advice. Sealant is supplied in 10.3-fl oz (305- information should not be used in
mL) disposable plastic cartridges that substitution for customer’s tests to
Preparation fit ordinary caulking guns, 20-fl oz ensure that Dow Corning’s products
Clean all joints, removing all foreign (590-mL) sausages and 2- and 4.5-gal are safe, effective, and fully satis-
matter and contaminants such as (7.5- and 17-L) bulk containers. factory for the intended end use.
grease, oil, dust, water, frost, surface Suggestions of use shall not be taken
dirt, old sealants or glazing LIMITATIONS as inducements to infringe any patent.
compounds and protective coatings. Dow Corning 795 Silicone Building
Sealant should not be used: Dow Corning’s sole warranty is
Application Method • In structural applications without that the product will meet the
Install backing material or joint filler, prior review and approval by Dow Corning sales specifications
setting blocks, spacer shims and tapes. Dow Corning Technical Service in effect at the time of shipment.
Mask areas adjacent to joints to ensure • In below-grade applications
neat sealant lines. Primer is generally • When surface temperatures exceed Your exclusive remedy for breach of
not required on non-porous surfaces, 50°C (122°F) during installation such warranty is limited to refund of
but may be necessary for optimal seal- • On surfaces that are continuously purchase price or replacement of any
ing of certain porous surfaces. A test immersed in water product shown to be other than as
placement is always recommended. • On building materials that bleed warranted.
Apply Dow Corning 795 Silicone oils, plasticizers or solvents that
Building Sealant in a continuous oper- may affect adhesion DOW CORNING SPECIFICALLY
ation using positive pressure. (The • On frost-laden or wet surfaces DISCLAIMS ANY OTHER
sealant can be applied using many • In totally confined joints (the EXPRESS OR IMPLIED
types of air-operated guns and most sealant requires atmospheric WARRANTY OF FITNESS
types of bulk dispensing equipment.) moisture for cure) FOR A PARTICULAR PURPOSE
Before a skin forms (typically within • If the sealant is intended to be OR MERCHANTABILITY.
15 minutes), tool the sealant with light painted (paints do not typically
pressure to spread the sealant against DOW CORNING DISCLAIMS
adhere to most silicone sealants)
the backing material and joint LIABILITY FOR ANY INCIDEN-
• To surfaces in direct contact with
surfaces. Remove masking tape as TAL OR CONSEQUENTIAL
food or other food-grade
soon as the bead is tooled. DAMAGES.
applications

Printed in USA Dow Corning is a registered trademark of Dow Corning Corporation.

Form No. 61-885H-01 AGP6146 ©2000, 2002 Dow Corning Corporation. All rights reserved.