TECHNICAL DATA SHEET
Mirror
NON-DESILVERING SEALANT FOR MIRRORS
TECHNICAL DATA SHEET
SMART ADVANTAGES
-
ACID FREE
DOES NOT DESILVER MIRROR BACKINGS
NON CORROSIVE TO METALS
DESCRIPTION
Bostik Mirror is a high quality neutral-curing silicone based adhesive that
provides a strong permanent flexible bond for mirrors to painted
surfaces, plaster, metal or wood. It has a low odour and does not
release acid during curing making it non-corrosive to metals, mirror
backings and suitable for use on alkaline materials such as concrete,
cement, mortar, masonry and plaster. It has a non-sag rheology and
can be applied to vertical surfaces.
APPLICATIONS


Designed for mirror installations - bonding mirrors to painted
surfaces, plaster, metal or wood.
Suitable for emergency sealing and bonding tasks in and around the
house, such as sealing around bathroom and kitchen fittings,
bonding up signboards, insulating appliances, fixing leaking plumbing, etc.
ADHESION
Exhibits excellent primerless adhesion to glass and mirror backings, and alkaline surfaces such as concrete, fibrous
cement, mortar and plaster. It also offers excellent adhesion to many other non-porous materials e.g. ceramics,
enamel, porcelain, coated wood, painted surfaces, canvas, some rubber, most metals (mild steel, stainless steel,
aluminium, copper, tin, galvanized iron, brass or zinc) and some plastics acrylics (epoxide, acrylics, polyester,
polyacrylate, polycarbonates, polystyrene, formica, fiberglass, polycarbonates and rigid PVC).
LIMITATIONS
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
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May become discoloured in contact with some organic elastomers, which tend to bleed oil or solvents into the
silicone, e.g. EPDM, APTK, Neoprene and Bituminous surfaces.
Not suitable for contact with natural stone i.e. marble, granite, quartzite as it may discolour the surfaces.
Will not adhere to some plastics such as polyethylene, polypropylene and Teflon.
NOT SUITABLE FOR FISH TANKS (contains a fungicide).
Do not apply sealant when relative humidity is below 10% - cure rate will be affected.
SAFETY INSTRUCTIONS
Bostik Mirror is non-toxic, however it is advisable to wear gloves in order to avoid direct skin contact. In the event
of skin or eye contact, rinse thoroughly and immediately with water. Seek medical assistance if irritation or
discomfort persists. Avoid breathing in vapours. Always work in a well ventilated area. Keep out of reach of
children! Cured silicone rubber can be handled without any health risk. Refer to our Safety Data Sheets for
further toxicological information and comprehensive handling instructions.
PJ/D181/issue 05/May 2016/Mirror
Next Revision: May 2021
Technical Data Sheet
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TECHNICAL DATA SHEET
SURFACE PREPARATION
Ensure surfaces are clean, dry and free of loose materials, dust, grease, rust and other contaminants. Surfaces
such as metals and glass should be degreased with a solvent e.g. acetone. Plastics should be lightly abraded with
emery paper. Soaps or detergents used to clean the surface must be rinsed away thoroughly with clean water to
ensure that all traces of the soaps are removed before sealing. Poor surface preparation may result in the
delamination of the silicone.
HOW TO USE
1.
2.
3.
4.
5.
6.
Ensure that surfaces are prepared as above.
Remove cap from tube and pierce film with reverse side of cap to break seal.
Apply silicone in narrow vertical beads (4mm bead size with 3 – 5cm spacing)
After applying the adhesive, press the mirror firmly onto the surface within
15 minutes before skin formation occurs on the silicone.
Ensure that the mirror is firmly fixed in place on the surface.
Support blocks or adhesive tape must be used to provide initial support until
the silicone is fully cured (approximately 48 hours). Very large mirrors may
require the use of permanent mechanical support in addition to Bostik Mirror.
3 – 5 cm spacing
between silicone
beads
APPLICATION PRECAUTIONS
Never apply a perimeter bead of silicone around the mirror and never apply the silicone in large blobs (typically
one at each corner). These application techniques will prevent the silicone from curing fully, risking catastrophic
failure as well as increase the risk of discolouration occurring and showing through on the mirror face. Avoid
getting silicone on the front face of the mirror.
CLEANING

Uncured silicone can be removed from the hands or tools using a clean solvent soaked cloth, e.g. turpentine or
paraffin. If removing uncured silicone from clothing, check fabric colour fastness before applying solvents.

Cured silicone must be removed mechanically with a sharp knife or chemically with Bostik Silicone Stripper.
STORAGE STABILITY
Bostik Mirror has a shelf life of at least 12 months if stored in a cool (below 25°C), dry place in its original
moisture-tight container. If the material is kept beyond the recommended shelf life, it is not necessarily unusable,
but a check should be performed to observe whether the product is still workable, apply-able and uncured. To
maximize the shelf life of the opened cartridge, we recommend that the nozzle be removed and a piece of plastic
placed over the cartridge tip after which the nozzle must be screwed back on. A large screw inserted into the
nozzle tip also helps
PRODUCT PACKAGING

90ml tube
PJ/D181/issue 05/May 2016/Mirror
Next Revision: May 2021
Technical Data Sheet
Page 2 of 3
TECHNICAL DATA SHEET
PRODUCT CHARACTERISTICS
Type
Appearance
Density (g/cm³)
TYPICAL PERFORMANCE DATA
Application temperature
Skin over time
Curing time
Coverage
Chemical resistance
Temperature resistance
Water resistance
Tear strength
Tensile strength
Modulus at 100% elongation
Elongation at break
Movement accommodation factor
Shore A hardness
Neutral cure
Homogenous non sag paste – clear
1.03g/cm3 at 23°C [ISO 1183]
5°C to 40°C
Approx. 15 minutes [ISO 7390, Profile U20]
Approx. 24 hours per 2mm
5 linear meters (4mm x 4mm joint)
Resistant to most diluted mineral and organic acids, alkalis
and salts at normal temperatures
– 40°C to 120°C
Waterproof
4.0 N/mm² [ISO 34 Method C]
0.6 N/mm² [ISO 8339]
0.36 N/mm² [ISO 8339]
300% [ISO 8339]
25% [ISO 11600]
18 [ISO 868]
DISCLAIMER
The above information is only offered as a guide to the use of this product. Furthermore, users should satisfy
themselves that it is suitable for their needs. Since we have no control over the conditions under which it is used,
we cannot accept responsibility for the problems caused by the use and/or application of this product.
Head Office: +27(0)21 555 7400
Beverley Close, Montague Gardens, 7441
PO Box 37008, Chempet, 7442
www.bostik.co.za
PJ/D181/issue 05/May 2016/Mirror
Next Revision: May 2021
Technical Data Sheet
Page 3 of 3
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