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Technical Data Sheet

Silcoset 153
1-Part Adhesive Sealants

Introduction Property Test Method Value


Silcoset 153 is a ready-to-use adhesive sealant paste that Uncured Product
cures on exposure to air to a resilient silicone elastomer. Colour: Translucent
Its combination of ease of application, excellent adhesion, Appearance: Thixotropic
durability, versatility and good electrical properties has paste
established Silcoset 153 for applications in every type of Tack Free Time: 4 minutes *
industry. 3mm Cure Through: 7 hours *
Extrusion Rate: 304g / minute
Key Features * measured at 23+/-2°C and 65% relative humidity.

• Good Electrical Insulation. Cured Elastomer


(after 7 days cure at 23+/-2°C and 65% relative humidity)
• Resistance to ageing, weathering, ozone and corona. Tensile Strength: BS903 Part A2 2.32 MPa
• Resistance to oxidation and many oils, chemicals and Elongation at Break : BS903 Part A2 280 %
solvents. Youngs Modulus: 0.65 MPa
• Excellent bonding to a wide range of substrates. Modulus at 100% Strain: BS903 Part A2 0.91 MPa
• Flexibility from -60°C to +225°C. Tear Strength: BS903 Part A3 5.50 kN/m
• UL recognised file number E334038 Hardness: BS903 Part A26 39° IRHD
Specific Gravity: BS 903 Part A1 1.05
Linear Shrinkage: <1.0%
Compression Set: 45 %
Use and Cure Information Peel Strength: 14.2 N/mm
How to Use Thermal Conductivity: 0.20 W/mK
Coefficient of Thermal
Surfaces to be bonded should be dry and free from grease, Expansion:
oil, dust, release agents, etc. Non-porous surfaces, Volumetric 876 ppm / °C
including that of cured silicone rubber, should be Linear 292 ppm / °C
degreased with solvent, e.g. trichlorethylene, toluene or Min. Service Temperature: -60 °C
white spirit. Glass is best degreased with MEK (methyl Max. Service Temperature: AFS 1540B 250 °C
ethyl ketone). Mild steel surfaces should be prepared by
the use of a n abrasive disc. Loose debris should be Electrical Properties
removed before application. For increased adhesion
contact ACC Silicones for information on primers. Volume Resistivity: ASTM D-257 4.70x10
14

Ω.cm
Application and Cure Surface Resistivity: ASTM D-257 7.77x10 Ωm
15

Dielectric Constant at 1MHz: ASTM D-150 3.2


On exposure of the applied Silcoset 153 to atmospheric Dissipation Factor at 1MHz: ASTM D-150 1.2x10
-3
moisture, the curing process begins with the formulation of
surface skin and progresses right though the material with
Adhesion Testing
the elapse of time.
Good unprimed adhesion to many substrates including glass
Cure rate is dependent on humidity and temperature but
stainless steel, aluminium and most plastics.
under normal conditions a tack free surface will be obtained
Customers are advised to carry out their own tests on clean,
in 10 to 20 minutes and a 4 mm thickness will be cured
degreased substrates to ensure satisfactory adhesion is
within 24 hours. The maximum thickness to be cured in
achieved.
one operation should not be greater than 12 mm if only one
surface is exposed to atmosphere.
All values are typical and should not be accepted as a
specification.
The rate of cure can be increased by heating, but
temperatures in excess of 80°C should not be used with
Silcoset 153 thickness greater than 0.3 mm. It should be
Health and Safety - Material Safety Data Sheets available on
noted that conditions of high temperature and low humidity request.
during cure can adversely affect the adhesion and physical
properties of Silcoset 153. Packages – 75ml and 310 ml cartridges, 20 litre pails.
Arrangements can be made to supply in other bulk containers.
Silcoset 153 liberates traces of acetic acid during the curing
process. Under normal conditions the acetic acid is rapidly Storage and Shelf Life – Expected to be 24 months in
dispersed, but in confined situations it may be necessary to original, unopened containers below 40°C.
provide supplementary ventilation. Silcoset 153 is
odourless and taint-free when fully cured. Revision Date: 05.10.11

The information and recommendations in this publication are to the best of our knowledge reliable. However nothing herein is to be construed as
a warranty or representation. Users should make their own tests to determine the applicability of such information or the suitability of any products
for their own particular purposes. Statements concerning the use of the products described herein are not to be construed as recommending the
infringement of any patent and no liability for infringement arising out of any such use is to be assumed.

ACC Silicones Ltd, Amber House, Treco S.R.L., Via Romagna N.8,
Showground Road, Bridgwater, Somerset, UK 20098 Sesto Ulteriano (MI), Italia.
Tel. +44(0)1278 411400 Fax. +44(0)1278 411444 Tel. 39/02/9880913 Fax. +39/02/98280413
www.acc-silicones.com

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