Revised November 2006
Multipurpose Neutral Silicone Sealant
Description Sikasil-C is a single component ready for use neutral silicone sealant that is
Uses Sikasil-C is suitable for use in general purpose glazing and sealing
applications where long term reliability is required.
Sikasil-C has excellent adhesion to non-porous materials such as glass
ceramics aluminium galvanised steel and plastics. It can be used for:
???? Standard and butt glazing of frames panels and shop fronts.
???? Sealing environmental and refrigerated rooms sheet metal skylights
ventilators and air conditioning units.
???? Assembly of metal and plastic signs.
???? Weatherproofing (gutters roofs brickwork).
???? Sanitary silicone for kitchens and bathrooms.
Advantages ???? One component ready to use.
???? Fast curing.
???? Excellent adhesion to many substrates.
???? Resistant to rain snow extreme temperature changes and ultraviolet
???? Performs well in a broad temperature range.
???? Long term resistance to fungal activity.
???? Suitable for internal and external use.
Storage and Shelf Life Stored in the original sealed packaging at temperatures of between 5oC and
35oC this product will keep for at least 12 months.
Instructions for Use
Surface Preparation All surfaces must be clean sound dry and free of oil greases and surface
contaminants. Thoroughly remove all loose particles and dust.
Metallic surfaces must be free of rust scale or oxide films and should be
degreased using Sika Colma Cleaner Acetone or M.E.K.
When used in remedial work all existing sealant must be removed.
Priming No priming is required for glass epoxies polyester and polyurethane
coatings most anodised aluminium ceramics and glass coated steel.
Application Sikasil-C is easily installed direct from the cartridge with normal caulking
For neat joint edges use masking tape. This should be removed immediately
after tooling before skin forms.
Standard Glazing: a thin bead of sealant will tolerate more movement than a
thick bead. Joint width and depth should not be less than 4mm and maximum
joint width should not exceed 25mm. Depth should be half the width with a
maximum of 10mm.
Butt Glazing: the sealant bead may be as deep as the glass thickness and the
maximum 10mm depth joint recommendation does not apply.
Revised November 2006
Cleaning Clean all tools and equipment immediately after use with Sika Colma Cleaner.
Sikaflex Hand Cleaner will remove fresh and partly cured material from the
Technical Data (Typical)
Colour White Black Grey Transparent Mid Grey
Density 1.01 kg/litre approx.
Shore A Hardness 18
±?25%?of the average joint width
Full Cure Rate 5 to 7 days (10mm depth @ 25oC and 50% R.H)
Tack Free Time 15 minutes (@ 25oC and 50% R.H)
Tensile Strength 0.5 MPa approx.
Tear strength 4 N/mm
Elastic recovery >90%
Service Temperature -60oC to +160oC
Application Temperature -10oC to 40oC (application at temperatures below 0oC is permissible provided
surfaces are dry and frost free)
Packaging 310ml cartridge (15 cartridges per box)
Important Notes ???? Sikasil-C is not recommended for use on submerged joints where porous
substrates permit water to the bond interface.
???? Do not use for structural glazing.
???? Should not be used on rubber coatings where bleeding of plasticisers may
???? Do not overpaint Sikasil-C.
???? Do not use in aquarium construction or similar structures as fungicide
leaching may occur.
???? Bleeding can occur on porous substrates. Specific testing should be
carried out on sensitive substrates.
Handling Precautions ???? Avoid contact with skin and eyes.
???? Wear protective gloves and eye protection during work.
???? If skin contact occurs wash skin thoroughly.
???? If in eyes hold eyes open flood with warm water and seek medical
attention without delay.
???? A full Material Safety Data Sheet is available from Sika on request.
Important Notification The information and in particular the recommendations relating to the application and
end-use of Sikas products are given in good faith based on Sikas current knowledge
and experience of the products when properly stored handled and applied under
normal conditions. In practice the differences in materials substrates and actual site
conditions are such that no warranty in respect of merchantability or of fitness for a
particular purpose nor any liability arising out of any legal relationship whatsoever can
be inferred either from this information or from any written recommendations or from
any other advice offered. The proprietary rights of third parties must be observed. All
orders are accepted subject of our terms and conditions of sale. Users should always
refer to the most recent issue of the Australian version of the Technical Data Sheet for
the product concerned copies of which will be supplied on request.
PLEASE CONSULT OUR TECHNICAL DEPARTMENT FOR FURTHER