SS-157 Product Description
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SS-157 is a fast curing, high strength, 1-part acetoxy silicone RTV
adhesive rubber product engineered for highly demanding aerospace applications. SS-157 offers greatly accelerated adhesion and quicker development of physical properties as compared to conventional silicone RTV's. When cured, the elastomer resists weathering, ozone, moisture,
UV and high temperatures. SS-157 works well in manual and automatic
dispensing equipment.
Product Features
Fast R.T. cure
Accelerated onset of adhesion
Thixotropic paste
Excellent unprimed adhesion to plastic, metal and glass
Convenient, heat accelerated
instant cure capability
Typical Applications
Assembly line adhesive
Form in place gaskets
Adhesive Sealant
Heat Accelerated Curing
Typical utilization involves dispensing in open air and ambient humidity to
result in a high strength adhesive rubber. However, cure speed can be accelerated
with hot air to nearly instant cures exhibiting very fast adhesion. A one
minute hot air stream exposure, followed by a one minute cool down in a humid
environment, results in cured elastomer condition exhibiting outstanding adhesion.
Method of Application
Dispense dressing onto gasket and flange surface. Install component and tighten
fasteners to the manufacturer’s torque specifications, thus sealing
all surface irregularities with the fastener clamping force.
Chemical cure system
Oxime cure system
High Strength Fast Cure Aerospace Adhesive Sealant
Typical Properties
UNCURED |
SS-157 |
| Color Gray | |
| Viscosity, cps | 500,000 |
| Specific Gravity | 1.12 |
| Consistency | thixotropic paste |
| Working time, mins | 4 |
| Tack Free Time, mins. | 12 |
| Application Rate | 250 |
| 90 PSI, g/min. | |
| 3mm orifice @ 0.6 MPa | |
| CURED - R.T. | |
| Max. Operating Temp. | 250 C |
| Physical properties: Tensile Strength, PSI 1000 Elongation, % 850 Durometer, Shore A 38 Peel Strength, PPI 50 Tear Strength, PPI 100 Lap Shear Strength,PSI 330 Dielectric Strength, V/mil >500 Dielectric Constant 2.8 Dissipation Factor 0.001 Volume Resistivity 2.0 X 1014 Thermal conductivity 0.0005 Coefficient of Thermal Expansion 20 x 10-5 |
|
Method of Application
Dispense sealant onto part and mate parts. Do not squeeze all of the product
out of flange assembly. Allow to cure.
Chemical cure system
Acetoxy cure system
Solids
98% solids, contains no solvents
Adhesion
Primerless adhesion to most plastics, metals and typical substrates.
Limitations
Do not use product on head gaskets, fuel or solvent immersion applications.
Allow sealant to fully cure before putting assembly into service. Ensure enough
product remains between flanges to be effective in an assembly.
Packaging
SS-157 is available in 10.3 oz. cartridges, 40 lb. pails and 400
lb. drums. This product is also available in customer defined packaging sizes,
upon request.
Handling and safety
For maximum shelf life, keep containers sealed when not in use. Keep out of
the reach of children. Uncured sealant irritates eyes and skin. Refer to MSDS.
Shelf-life
Sealed containers are guaranteed for 1 year from the ship date when stored
in a cool dry area below 70 F.
Limited warranty
All recommendations, statements and technical data herein are based on tests
we believe to be reliable and correct, but accuracy and completeness of said
tests are not guaranteed and are not to be construed as warranty, either expressed
or applied. User shall rely on his own information and tests to determine
suitability of the product for the intended use, and the user assumes all
risk and liability resulting from the use of this product. Manufacturer’s
sole responsibility shall be to replace that portion of product of the manufacturer
proves to be defective. Manufacturer shall not be liable to the buyer or any
third party for injury, loss or damage directly or indirectly resulting from
the use of, or inability to use, the product.
Recommendations or statements other than those contained in a written agreement
signed by an officer of the manufacturer shall not be binding by the manufacturer.
This product has not been tested for, and is therefore not recommended for,
uses for which prolonged contact with mucous membranes, abraded skin, or blood
is intended; or for uses which implantation within the human body is intended.