Hylosil 103 Translucent RTV Silicone Technical Data Sheet

HYLOSIL 103
Amine curing RTV silicone sealant
Description
Hylosil 103 is a non-corrosive, low odour (when compared with Acetoxy based sealants), Room
Temperature Vulcanising (RTV) silicone compound. It is a high performance engineering grade which
is used in the automotive industry and for general manufacturing. It can also be used for a variety of
applications and is particularly suitable for high strength applications.
Hylosil 103 has good resistance to oils and aqueous anti-freeze agents
Unlike general-purpose silicone sealants, Hylosil 103 contains no solvents and does not give off acetic
acid during cure.
Typical Properties, Uncured Product
Colour Transparent
Consistency Non- Slump Paste
Cross Linking System Amine
Specific Gravity (g/ml) DIN 53479 1.02
Extrusion Rate 3mm orifice @ 60 psi 45 g/min
Skin Time (Minutes) @ 55% RH 10
Cure Rate @ 25°C and 60% RH 3mm per 24 hours
Cured Product
Tensile Strength (N/mm2) DIN 53505, S3A. 2.5
Elongation at Break (%) DIN 53504, S3A 350
Modulus at 100% Elongation DIN 53504, 1.1 N/mm2
S3A. 
Hardness (Shore A) DIN 53505 25
Tear Strength (N/mm2) ASTM D 624, Form B 7
Typical temperature Range -50°C to 180°C unaltered.
                           Usable to 240°C
Information given in this publication is based upon technical data gained in our own and other Laboratories and is believed to be true. However the material is used in
conditions beyond our control thus we can assume no liability for results obtained or damages incurred through the application of the data present herein.
Hylomar Ltd, Cale Lane, Wigan WN2 1JT UK
Tel: +44 (0) 1942 617000
Fax: +44 (0) 1942 617001
Revision date
Product name
02.06.2010
Page 1
Hylosil 103 silicone sealant Issue 5
of 2
Dielectric Properties
Volume Resistivity Ohm.cm DIN 53482
determined dry at 23°C 5 (x1014)
determined wet at 60°C 9 (x1013)
Dielectric Strength (kv/mm) DIN 53481 17
Tracking Resistance DIN 53480 KA 3 c
Dielectric Constant (epilson) at room 3.0 - 2.9
temperature in a frequency range of 
50Hz to 5MHz DIN 53483 
Dissipation Factor (tan) at room 0.01 - 0.005
temperature in a frequency range of 50Hz 
to 5Mhz DIN 53483 
Instructions for Use
Ensure both surfaces to be bonded are dry and free from contamination such as oil or grease.
Apply a bead directly onto one surface. Once applied, the joint should be assembled without
delay.
Care should be taken to ensure any excess compound does not extrude internally and foul any
internal oil-ways or other channels and cause blockages.
Any excess external product can be wiped away with a damp cloth.
Typical Applications
Due to its good resistance to oils, Hylosil 103 is ideal for use as a flexible gasket or flange sealant,
for use in automotive and general engineering applications.
Handling and Safety
Xi Irritant – Risk Phrases = R36, R38. Safety Phrases = S26, S28, S36/37, S39.
Hylosil 103 is available in 100ml tubes, 300ml cartridges and 17 litre kegs.
The shelf life of Hylosil 103 is: 12 months in tubes.
18 months in cartridges
6 months in standard 17 L kegs
12 months in 17 L US export kegs.
To achieve the above shelf lives the product must be stored in the original unopened containers
between 5°C to 25°C in dry conditions out of direct sunlight.
Packaging
Hylosil 103 is available in 100ml tubes, 300ml cartridges and 17 litre kegs.