High performance, elastomeric joint sealant, (Gun Grade)
MasterSeal GG 470 is a high grade, polysulphide
based sealant possessing outstanding resistance
to deterioration due to weathering, ozone, ultra-
violet light and attack by chemicals present in
industrial atmospheres. It has the ability to
withstand repeated cycles of compression and
extension over a wide temperature range, and has
excellent adhesion properties to all materials
commonly employed in building and construction
of 3 litre sealed units for sealing horizontal and
vertical joints where pronounced cyclical
movement is expected and where the service
conditions would be harsh for most common
sealants. It is ideal for use in expansion joints in
reinforced concrete structures such as bridges,
reservoirs, water treatment works, sea walls and
roads, etc. It can also be used in floor joints
subject to heavy usage where a high resistance to
damage is required.
Slump Gun Grade
5°C to 40°C
Transverse ±25% M.A.F.
2 pack units, a total of 3 litres
ASTM C 920-02
Type M, Class 25
BS 5212 : Part 1 : 1990 Compliance
BS EN ISO 11600
Type F, Class 25LM
ESTIMATED SET AND CURE TIMES
Property 25°C 40°C
Joint size may range from a minimum of 5mm to a
maximum of 50mm wide. Joints with cyclic
movements should have a width:depth ratio 2:1
and designed so total movement does not exceed
the 25% M.A.F. related to the joint width. Sealant
depth shall not exceed joint width except joints
subject to total immersion where joint profile
should be 1:1.
Minimum sealant depth recommended:
5mm for metals, glass and other impervious
5mm below flush for joints exposed to traffic.
Surfaces must be clean and dry.
Wire brush thoroughly and remove
dust and all contaminants.
Remove any corrosion or millscale
grinder or chemical remover. De-
grease the surfaces with clean
cloths soaked in oil-free cleansing
Wood surfaces must be clean and
dry, cut back or abrade where
necessary to sound timber.
Thoroughly clean the surfaces with
clean cloths soaked in oil-free
Coating should be removed and the
surfaces treated as above.
Where required, a bond breaking tape should be applied
The correct primer must always be used.
MasterSeal P 101
Porous surfaces (such as concrete and masonry)
Non-porous surfaces (such as metals, glass and
A single coat of primer should be applied by
the primer tins. The primer must be allowed to
dry to a tack free state before applying
MasterSeal GG 470.
3 hours of primer, otherwise repriming will be
MasterSeal GG 470 should be applied when the
ambient temperature is between 4°C and 50°C.
When the temperature is below 10°C storage at
room temperature for several hours will ease
mixing and application.
Mix and use one complete unit at a time. Do
Mix for 5 - 10 minutes using a suitable paddle
paddle completely through the mass of the
its container and mix thoroughly, into the base
using a palette knife.
throughout the base compound will result in
uncured sealant. Once mixed
MasterSeal GG 470 should be used
applied using a sealant gun but may be
applied by trowel if required.
which can be cut to suit the joint width.
The sealant should be gunned into the joint
nozzle occasionally to avoid contamination.
Deep joints should be filled in two or more
runs, to prevent air entrapment.
Once the sealant has been applied, a small
be used to compact the sealant into the joints
and to achieve a smooth polished finish. Any
masking tape which has been applied should
be removed before the sealant cures.
Mixing and application equipment should be
per 1 litre of material)
Depth of joint
Width of joint mm
10 15 20 25 30
Store under cover out of direct sunlight and protect
from extremes of temperature. In tropical climates
the product must be stored in an air conditioned
environment. Shelf life is at least 12 months when
stored between 5°C and 35°C.
The components and mixed sealant should not be
left in contact with skin for prolonged periods.
Gloves should be worn and the use of a barrier
cream is strongly recommended. Solvent must
not be used for cleaning the hands. Use an
industrial cleaner and wash with soap and water.
For further information including disposal
instructions refer to the Material Safety Data
The technical information and application advice given in this BASF publication are based on the present state of
our best scientific and practical knowledge. As the information herein is of a general nature, no assumption can be
made as to a product's suitability for a particular use or application and no warranty as to its accuracy, reliability or
completeness either expressed or implied is given other than those required by law. The user is responsible for
checking the suitability of products for their intended use.
Field service where provided does not constitute supervisory responsibility. Suggestions made by BASF either
orally or in writing may be followed, modified or rejected by the owner, engineer or contractor since they, and not
BASF, are responsible for carrying out procedures appropriate to a specific application.
BASF Construction Chemicals UAE LLC
P.O. Box 37127, Dubai, UAE
Tel: +971 4 8090800, Fax: +971 4 8851002
Disclaimer: the LRQA mark relates
to certified management system and
not to the product mentioned on this
Field service, where provided, does not constitute
supervisory responsibility. For additional
information contact your local BASF
BASF reserves the right to have the true cause of
QUALITY AND CARE
All products originating from BASF’s Dubai, UAE
facility are manufactured under a management
system independently certified to conform to the
requirements of the quality, environmental and
occupational health & safety standards ISO 9001,
ISO 14001 and OHSAS 18001.
* Properties listed are based on laboratory controlled tests.
= Registered trademark of the BASF-Group in many countries.