720 Paintable Silicone Sealant is a non-acidic, MS based
silicone sealant. 720 Paintable Silicone Sealant is designed to be painted at
any time after application with regular acrylic paints
Highly flexible +/- 25% of original joint width.
resistance to weathering and UV radiation, resists yellowing
formation when curing
high build, flexible emulsion coatings
Does not sag or
slump in joints up to 30mm
Will not corrode
concrete or metals
sealing where over painting is required
where a level of chemical resistance is required.
(Californian South coast air quality management rule 1168) is 30g per liter.
Concrete, Cement sheet, Cement sheeting, Ceramic, Masonry,
Plastics (pretest), Plasterboard, ABS, Steel, Aluminium, Timber, Glass
Specific Gravity: 1.45
Sag: Nil @ 25 oC
Skin time: 2-4 hours
Cure Rate: 3 mm / day @ 23 oC / 50% RH
Full Cure: Dependant upon thickness
Shore A Hardness: 25
Service Temperature: -40 oC to 90 oC Modulus 0.54
Application temperature 5 oC to 35oC
Coverage 400g cartridge will give approximately 13 lineal
meters of a 5mm bead. Surface Preparation All surfaces must be clean, dry,
sound and free of dust, oil, old sealant or other contamination. Lightly
contaminated surfaces should be wiped with Isopropyl Alcohol (IPA) using the
2-rag wipe method. Apply IPA to a clean lintfree cloth and wipe onto the
surface to be cleaned to solubilise and remove the majority of the contaminant.
A clean dry cloth should then be applied to remove remaining
contamination and dry the surface. Ensure wet cleaner is
not allowed to dry on surface. For more heavily contaminated surfaces or where
the IPA does not remove the contaminant, a generic wax and grease remover
should be applied using the same 2- rag wipe method. Once this has been
completed the surface should be given a final clean with IPA using the 2-rag
wipe method to ensure the surface is adequately prepared. Adhesion to metals
and some surface finishes can be further improved by light abrasion prior to
cleaning with IPA using the 2 rag-wipe method. For glazing applications IPA
should be used to clean and prepare the surface. Manufacturers of plastics
should be consulted about suitable cleaning solvents. Adhesion to plastics
should be pre-tested. Mask either side of joint to produce a neat finish. Use a
suitable sized foam backing rod or polyethylene bond breaker tape to prevent
three sided joint contact impeding the free and even deformation of the sealant
in a cyclic joint.
Cut tip off cartridge. Angle cut nozzle to desired size.
Screw nozzle onto cartridge. Apply sealant in a steady, continuous flow by
pushing the sealant ahead of the nozzle so that it completely fills the joint
and is in contact with both sides. Immediately after application, tool the
sealant using a spatula. The use of water / soap solutions is not recommended.
Avoid contact with alcohol other solvent cleaners during cure. Remember to
remove the masking tape before the sealant skins.
Flexible, acrylic-based emulsion coatings are best over
720 paintable silicone. Less flexible interior coatings are likely to crack due
to their inflexibility. Oil based coatings and coatings containing a solvent
are likely to remain tacky for an extended period when used over 720 paintable
Resistant to water, salt water, grease, oils, fuels,
defrosting liquid, detergents, aliphatic fats, mildew, weak acids and bases
(pre testing required).
Best results are obtained by masking prior to sealing to
avoid the necessity for clean up. If sealant is applied to areas where it is
unwanted, clean up using white spirits.
Avoid exposure to
high levels of chlorine.
Do not use in
joints deeper than 20 mm
Avoid contact with
alcohol and other solvent cleaners during cure phase.
required on Marble or other highly porous stone - finish may be affected.
coatings may remain tacky.
Do not use on
Do not use on
materials that bleed oil and plasticisers or solvents, as this will affect
adhesion (e.g. most rubbers)
Not a fire rated
or glazing sealant. Not suitable for glazing with glass, acrylic or
Not suitable for
permanent immersion e.g. swimming pools, aquariums or hot tubs.
Not for sealing polycarbonate sheeting or other sheeting
with high thermal expansion
Not for food or
drinking water contact
Not suitable for floor applications or foot traffic areas.
This product is not considered to be hazardous according
to criteria of NOHSC. Avoid contact with skin and eyes. Store in a dry place
below 30 oC. Keep out of reach of children