Dow Corning 732 is a general purpose, one-component silicone adhesive/sealant that cures at room temperature when exposed to moisture. It adheres well to many substrates and remains flexible from -60°F to 356°F. The sealant offers good dielectric properties, complies with military and FDA standards, and cures within 24 hours to a tough, flexible rubber. It can be used for general industrial sealing and bonding applications.

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Product Information
DOW CORNING® 732
Multi-Purpose Sealant
General purpose silicone adhesive/sealant (specified)
FEATURES
APPLICATIONS
" One-component adhesive/sealant " General industrial sealing and bonding applications.
" Cures at room temperature when exposed " Complies with MIL-A-46106 and FDA 177.2600.
to moisture in the air
" Acetoxy cure system
" Non-sag, paste consistency TYPICAL PROPERTIES
" Easy to apply Specification writers: These values are not intended for use in preparing specifications.
" Cures to a tough, flexible rubber Please contact your local Dow Corning sales representative prior to writing specifications on
" Good adhesion to many substrates this product.
" Stable and flexible from
-60ºC (-76ºF) to +180ºC (356ºF), with CTM* ASTM* Property Unit Value
short peaks up to +205ºC (401ºF)
" Black version: stable and flexible from As supplied
-60ºC (-76ºF) to +205ºC (401ºF), with 0176 Appearance Non-slump paste
short peaks up to +230ºC (446ºF) Color(s) White, black or
" Excellent dielectric properties clear
" Complies with MIL-A-46106
0364 Extrusion rate1 g/minute 350
" Complies with FDA 177.2600
" Available in white, black or clear 0098 Skin-over time minutes 7
0095 Tack-free time minutes 20
Mechanical properties, cured 7 days in air at 25ºC (77ºF) and
50% relative humidity
0097B D1475 Specific gravity 1.04
0099 D2240 Durometer hardness, Shore A 25
0137A D412 Tensile strength MPa 2.3
0137A D412 Elongation at break % 540
0420 Volume coefficient of thermal 1/K 1.12x10-3
expansion
Electrical properties, cured 7 days in air at 25ºC (77ºF) and
50% relative humidity
0114 D149 Dielectric strength kV/mm 21.6
0112 D150 Dielectric constant at 100Hz/100kHz 2.8
0112 D150 Dissipation factor at 100Hz/100kHz 0.0015
0112 D150 Volume resistivity Ohm.cm 1.5x1015
1. Extrusion rate: 3.2mm orifice at 0.62MPa.
* CTM: Corporate Test Method, copies of CTMs are available on request.
ASTM: American Society for Testing and Materials.
HOW TO USE Unprimed adhesion may be obtained
Substrate preparation on many substrates such as glass,
All surfaces must be clean and dry. metals and most common engineering
Degrease and wash off any plastics. Substrates to which good
contaminants that could impair adhesion is normally not obtained
adhesion. Suitable solvents include include PTFE, polyethylene,
isopropyl alcohol, acetone or methyl polypropylene and related materials.
ethyl ketone.

2. However, for maximum adhesion, the HANDLING PRECAUTIONS For further information, please see our
use of DOW CORNING® 1200 OS Product safety information required for website, www.dowcorning.com or
Primer is recommended. After solvent safe use is not included. Before consult your local Dow Corning
cleaning, a thin coat of handling, read product and safety data representative.
DOW CORNING 1200 OS Primer is sheets and container labels for safe use,
applied by dipping, brushing or physical and health hazard information. LIMITED WARRANTY
spraying. Allow primer to dry for 15 to The material safety data sheet is INFORMATION - PLEASE
90 minutes at room temperature and a available on the Dow Corning website READ CAREFULLY
relative humidity of 50% or higher. at www.dowcorning.com. You can also The information contained herein is
obtain a copy from your local offered in good faith and is believed to
How to apply Dow Corning sales representative or be accurate. However, because
Apply DOW CORNING 732 Multi- Distributor or by calling your local conditions and methods of use of our
Purpose Sealant to one of the prepared Dow Corning Global Connection. products are beyond our control, this
surfaces, then quickly cover with the information should not be used in
other substrate to be bonded. USABLE LIFE AND substitution for customer's tests to
STORAGE ensure that Dow Corning's products are
On exposure to moisture, the freshly When stored at or below 32ºC (90ºF) in safe, effective, and fully satisfactory
applied material will "skin-over". Any the original unopened containers, this for the intended end use. Suggestions
tooling should be completed before this product has a usable life of 27 months of use shall not be taken as
skin forms. The surface is easily tooled from the date of production. inducements to infringe any patent.
with a spatula. The Adhesive/Sealant
will be tack-free in less than As DOW CORNING 732 Multi- Dow Corning's sole warranty is that the
45 minutes. Purpose Sealant cures by reaction with product will meet the Dow Corning
moisture in air, keep the container sales specifications in effect at the time
Cure time tightly sealed when not in use. A plug of shipment.
After skin formation, cure continues of used material may form in the tip of
inward from the surface. In 24 hours a tube or cartridge during storage. This Your exclusive remedy for breach of
(at room temperature and 50% relative is easily removed and does not affect such warranty is limited to refund of
humidity) DOW CORNING 732 the remaining contents. purchase price or replacement of any
Multi-Purpose Sealant will cure to a product shown to be other than as
depth of about 3mm. Very deep PACKAGING warranted.
sections, especially when access to This product is available in a variety of
atmospheric moisture is restricted will container sizes. Contact your local DOW CORNING SPECIFICALLY
take longer to cure completely. Cure Dow Corning sales representative for DISCLAIMS ANY OTHER
time is extended at lower humidity information about container sizes EXPRESS OR IMPLIED
levels. available in your area. WARRANTY OF FITNESS FOR A
PARTICULAR PURPOSE OR
Before handling and packaging bonded LIMITATIONS MERCHANTABILITY.
components, users are advised to wait a This product is neither tested nor
sufficiently long time to ensure that the represented as suitable for medical or DOW CORNING DISCLAIMS
integrity of the adhesive seal is not pharmaceutical uses. LIABILITY FOR ANY
affected. This will depend on many INCIDENTAL OR
factors and should be determined by HEALTH AND CONSEQUENTIAL DAMAGES.
the user for each specific application. ENVIRONMENTAL
INFORMATION WE HELP YOU INVENT THE
Compatibility To support Customers in their product FUTURE."
DOW CORNING 732 Multi-Purpose safety needs, Dow Corning has an
Sealant releases a small amount of extensive Product Stewardship
www.dowcorning.com
acetic acid during cure. This may cause organization and a team of Product
corrosion on some metallic parts or Safety and Regulatory Compliance
substrates, especially in direct contact (PS&RC) specialists available in each
or when the cure is carried out in a area.
totally enclosed configuration which
would not allow cure by-products to
escape.
DOW CORNING 732 Multi-Purpose Sealant WE HELP YOU INVENT THE FUTURE. is a trademark of Dow Corning Corporation.
2 15/05/2002 DOW CORNING is a registered trademark of Dow Corning Corporation.
Ref. no. 10-1096F-01 DC 3395 ©1997-2002 Dow Corning Corporation. All rights reserved.