Product Information

Adhesives Dow Corning®

3165 Fast Tack RTV Adhesive
FEATURES
Sealant
• Non-flowing
• Fast tack free RT cure Gray, non-flowing adhesive, fast tack free with good green
• Good green strength strength and good flame resistance
• UL 94V-0 Flammability Rating
APPLICATIONS
BENEFITS • Sealing openings in modules and housings
• Adding mechanical stability to individual components
• No mixing required • Assembly of components on PWBs
• RT cure, no ovens required • Sealing in and around wired and electrical leads
• Faster in-line processing at RT with • Yoke assembly
option for heat acceleration
• Can be considered for uses requiring
added flame resistance TYPICAL PROPERTIES
Specification Writers: These values are not intended for use in preparing specifications.
COMPOSITION Please contact your local Dow Corning sales office or your Global Dow Corning
Connection before writing specifications on this product.

• 1-Part
Property Unit Value
• Polydimethylsiloxane adhesive
Extrusion Rate g/min 212

APPLICATION METHODS Specific Gravity (Cured) - 1.35

• Automated or manual needle dispense Tack-Free Time at 25ºC minutes 5

systems
Tensile Strength psi 125
MPa 0.9
kg/cm2 9

Unprimed Adhesion - Lap Shear to psi 200

Aluminum MPa 1.4
N/cm2 138

Durometer Shore A - 35

Durometer Shore 00 - 83

Shelf Life at 25ºC months 12

UL Flammability Classification NA 94 V-0

DESCRIPTION (1-, 8-, 40- and 440-lb) containers, to determine minimum cure time or
Dow Corning one-part moisture cure net weight. Not all products may be can detect the presence of surface
adhesives are generally cured at room available in all packages and some contaminants such as mold release
temperature and in an environment of additional packages, such as a bladder agents, oils, greases and oxide films.
30 to 80 percent relative humidity packs or tubes, may be available for
eliminating the need for curing ovens certain package sizes. ADHESION
and the associated costs of energy and Dow Corning silicone adhesives are
capital. Greater than 90 percent of USABLE LIFE AND specially formulated to provide
full physical properties should be STORAGE unprimed adhesion to many reactive
attained within 24 to 72 hours and For best results, Dow Corning RTV metals, ceramics and glass, as well as
varies according to product. Faster adhesives should be stored at or to selected laminates, resins and
manufacturing throughput can be below the storage temperature listed plastics. However, good adhesion
achieved since the adhesive and on the product label. Special cannot be expected on non-reactive
component can be handled in much precautions must be taken to prevent metal substrates or non-reactive
shorter times of about 10 to 120 moisture from contacting these plastic surfaces such as Teflon®,
minutes, depending on the adhesive materials. Containers should be kept polyethylene or polypropylene.
selected and the amount applied. tightly closed with head or air space Special surface treatments such as
These adhesives are not typically minimized. Partially filled containers chemical etching or plasma treatment
used in highly confined spaces or should be purged with dry air or other can sometimes provide a reactive
where a deep section cure is required gases, such as nitrogen. Shelf life is surface and promote adhesion to
as they generally cure from the indicated by the “Use Before” date these types of substrates. Dow
exposed surface inward at a rate of found on the product label. Corning® brand Primers can be used
0.25 inch per seven days. Cure to increase the chemical activity on
progresses from the outer exposed difficult substrates. Poor adhesion
surface and is dependent on the PREPARING SURFACES may be experienced on plastic or
moisture in the air. Working time is All surfaces should be thoroughly rubber substrates that are highly
generally a few minutes to an hour cleaned and/or degreased with Dow plasticized, because the mobile
for these products until a surface skin Corning® brand OS Fluids, naphtha, plasticizers act as release agents.
begins to form. Mild heat below 60°C mineral spirits, methyl ethyl ketone Small-scale laboratory evaluation of
(140°F) may be used to increase (MEK) or other suitable solvent. all substrates is recommended before
through-put by accelerating the cure. Solvents such as acetone or isopropyl production trials are made.
Dow Corning silicone adhesives alcohol (IPA) do not tend to remove
retain their original physical and oils well, and any oils remaining on
electrical properties over a broad the surface may interfere with USEFUL TEMPERATURE
range of operating conditions which adhesion. Light surface abrasion is RANGES
enhance the reliability of and service recommended whenever possible, For most uses, silicone elastomers
life of electronic devices. The stable because it promotes good cleaning should be operational over a
chemistry and versatile processing and increases the surface area for temperature range of -45 to 200°C (-
options of these adhesives offer bonding. A final surface wipe with 49 to 392°F) for long periods of time.
benefits for a variety of electronics acetone or IPA is also useful. Some However, at both the low- and high
needs from increasing component cleaning techniques may provide temperature ends of the spectrum,
safety and reliability, reducing total better results than others; users behavior of the materials and
cost or increasing the performance should determine the best techniques performance in particular applications
envelope of devices or modules. for their particular applications. can become more complex and
Underwriters Laboratory (UL) 94 require additional considerations. For
recognition is based on minimum SUBSTRATE TESTING low-temperature performance,
thickness requirements. Please Due to the wide variety of substrate thermal cycling to conditions such as
consult the UL Online Certifications types and differences in substrate -55°C (-67°F) may be possible, but
Directory for the most accurate surface conditions, general statements performance should be verified for
certification information. on adhesion and bond strength are your parts or assemblies. Factors that
impossible. To ensure maximum may influence performance are
bond strength on a particular configuration and stress sensitivity of
PACKAGING components, cooling rates and hold
RTV Adhesives are typically substrate, 100 percent cohesive
failure of the adhesive in a lap shear times, and prior temperature history.
packaged in 100 ml syringes and 330 At the high-temperature end, the
ml cartridges, 1 kg tubs and pails (18 or similar adhesive strength test is
desired. This ensures compatibility of durability of the cured silicone
- 25 kg). In general, Dow Corning elastomer is time and temperature
adhesives/sealants are supplied in the adhesive with the substrate being
considered. Also, this test can be used dependent. As expected, the higher
nominal 0.45-, 3.6-, 18- and 200-kg
the temperature, the shorter the time HEALTH AND specifications in effect at the time of
the material will remain useable. ENVIRONMENTAL shipment. Your exclusive remedy for
breach of such warranty is limited to
INFORMATION refund of purchase price or
SOLVENT EXPOSURE To support Customers in their
When liquid or vapor solvent or fuel replacement of any product shown to
product safety needs, Dow Corning be other than as warranted.
exposure can occur in an application, has an extensive Product Stewardship
the silicone adhesive discussed in this organization and a team of Product
brochure is intended only to survive DOW CORNING SPECIFICALLY
Safety and Regulatory Compliance DISCLAIMS ANY OTHER
splash or intermittent exposures. It is (PS&RC) specialists available in each
not suited for continuous solvent or EXPRESS OR IMPLIED
area. For further information, please WARRANTY OF FITNESS FOR
fuel exposure. Testing should be see our website,
done to confirm performance of the A PARTICULAR PURPOSE OR
www.dowcorning.com or consult MERCHANTABILITY.
adhesives under these conditions. your local Dow Corning
representative. DOW CORNING DISCLAIMS
HANDLING LIABILITY FOR ANY
PRECAUTIONS LIMITATIONS INCIDENTAL OR
PRODUCT SAFETY This product is neither tested nor CONSEQUENTIAL DAMAGES.
INFORMATION REQUIRED represented as suitable for medical or
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