Product Data Sheet Show all documents

SikaSeal®-470 GG Plus

(formerly MasterSeal® 470)                                                                                                                                                                                                                                                                                                      High performance, elastomeric, non-sag, polysulphide joint sealant

SikaSeal®-470 GG Plus is a high grade, chemically curing, two component polysulphide based sealant that forms a tough, flexible, durable, rubber like material which adheres to most common construction surfaces and provides weatherproof seal in joints subject to a high degree of deformation or continuous cyclic movement.

  • Forms a tough, flexible, elastomeric, weatherproof seal
  • Excellent resistance to deterioration due to weathering, ozone, U.V. light and high climatic and in-use temperatures
  • Excellent chemical resistance
  • Durable weatherproof sealing even in joints with high levels of deformation (±25%) or repeated cyclic movement of compression and extension over a wide temperature range
  • Excellent storage stability of base and curing agent ensures excellent shelf life
  • Excellent adhesion to concrete, brickwork, metal, tiling, masonry, stone, steel and glass (check need for primer)
  • Lead free curing compounds ensure that the product is safe for handling and application
  • SikaSeal®-470 GG Plus has a unique, single container packaging eliminating mistakes in mix ratios, minimizing packaging waste and providing convenience to user
Product Data Sheet Show all documents

Usage

  • Bridges, tunnels and other civil engineering structures
  • Precast concrete paneling and high-rise buildings
  • Concrete and brick foundations, retaining walls and bridge abutments
  • Secondary containment areas
  • Wet areas such as kitchens, laundries, bathrooms and showers, beneath tiles
  • Terraces, decks and balconies
  • Floor joints subject to heavy usage and traffic
  • Industrial areas and those subject to chemical spillage
  • Remedial repairs to asphalt, concrete, fiber reinforced cement or similar slab surface
  • As a bolt hole sealant for the Waboflex REJ / Waboflex SR expansion joints
 

Advantages

  • Forms a tough, flexible, elastomeric, weatherproof seal
  • Excellent resistance to deterioration due to weathering, ozone, U.V. light and high climatic and in-use temperatures
  • Excellent chemical resistance
  • Durable weatherproof sealing even in joints with high levels of deformation (±25%) or repeated cyclic movement of compression and extension over a wide temperature range
  • Excellent storage stability of base and curing agent ensures excellent shelf life
  • Excellent adhesion to concrete, brickwork, metal, tiling, masonry, stone, steel and glass (check need for primer)
  • Lead free curing compounds ensure that the product is safe for handling and application
  • SikaSeal®-470 GG Plus has a unique, single container packaging eliminating mistakes in mix ratios, minimizing packaging waste and providing convenience to user

Packaging

Ready to mix 4 L packing (Comp. A + Comp. B)

Colour

Black and grey

Product Details

Sustainability / Certifications / Approvals

CERTIFICATES AND TEST REPORTS

  • ASTM C920, Type M, Grade NS, Class 25, Use T, M & O
  • Passes fuel ressistance acc. BS 5212: Part 1: 1990
  • BS EN ISO 11600, Type F, Class 25LM
 
Product Information

Shelf life

12 months from production date

Storage conditions

SikaSeal®-470 GG Plus shall be stored in dry conditions, where it is protected from direct sunlight and at temperatures between +5 °C and +25 °C.

Density

~1.60 kg/l (at 25°C)

Viscosity

Thixotropic paste
Technical Information

Shore A hardness

~25

Chemical resistance

Resistant to many chemicals, contact Sika Technical Department for details.

Joint design

Joint configuration
Minimum Joint width: 6 mm
Maximum Joint width: 50 mm

 

 

Width: Depth Ratio
The joint width must be designed to suit the movement capability of the
sealant. For movement joints, a width to depth ratio of approximately 2 : 1
must be maintained. For butt joint the width to depth ratio should be 1 : 1.

 

 

Minimum joint depth is recommended:

  • 6 mm for non-porous surfaces
  • 10 mm for porous surfaces
  • 20 mm for trafficked joints and joints that are exposed to hydrostatic pressure

 

 

At chamfered elements, don't fill the chamfer with sealant.

Application

Application Information

Ambient air temperature

+5°C to +45°C, min. 3°C above dew point temperature

Substrate temperature

+5°C to +45°C

Curing time

Initial cure time for light trafficFinal cure for chemical attack or water immersion
~24 h (at 25°C)
~5 h (at 40°C)		~14 days (at 25°C)
~7 days (at 40°C)

 
Application steps

SUBSTRATE PREPARATION

  • All surfaces must be clean, dry and free from any loosely adhering particles.
  • Check the joints edges for soundness and if found weak cut recess and fill up with suitable repair mortar.
  • Correct joint depth can be established by inserting closed cell polyethylene backing rod tightly into the joint.
  • When the joints have been filled with fiber filled board, this must be raked back to the required depth. Use bond breaker tape over the backer material.
  • Protect surfaces with masking tape.
 

Concrete and Masonry

  • Surfaces must be clean and dry.
  • Wire brush thoroughly and remove dust and all contaminants.

Metals

  • Remove any corrosion or millscale by grit or shotblast, wirebrush, grinder or chemical remover.
  • De-grease the surfaces with clean cloths soaked in oil-free cleansing solvent.

Wood (bare)

  • Wood surfaces must be clean and dry, cut back or abrade where necessary to sound timber.

Glass and glazed materials

  • Thoroughly clean the surfaces with clean cloths soaked in oil-free cleansing solvent.

Coating surfaces

  • Coating should be removed and the surfaces treated as above.

Priming

  • Application of Sika® Primer-101 should not be carried out below 5°C.
  • A single coat of primer should be applied by brush in accordance with the instructions on the primer tins.
  • Sika® Primer-101 must be allowed to dry to a tack free state before applying SikaSeal®-470 GG Plus.
  • SikaSeal®-470 GG Plus should be applied within 3 hours of primer, otherwise repriming will be necessary.

MIXING

  • Mix and use one complete unit at a time. Do not subdivide.
  • SikaSeal®-470 GG Plus is supplied with base and catalyst in the same single container.
  • Mix curing agent with base material for 5 - 10 minutes using a suitable paddle fitted to a 500 rpm electric drill moving the paddle completely through the mass of the material.
  • The sides and base of the container should be periodically scraped down with a palette knife to ensure all of the catalyst is completely blended with the base component.
  • Failure to mix correctly will result in uncured sealant.
  • Once mixed SikaSeal®-470 GG Plus should be used immediately.
 

APPLICATION

  • Where required, protect the surface with masking tape.
  • Sealant is formulated to be applied using a sealant gun but may be applied by trowel if required.
  • Sealant guns are fitted with conical nozzles which can be cut to suit the joint width.
  • The sealant should be gunned into the joint using uneven trigger pressure, cleaning the nozzle occasionally to avoid contamination.
  • Deep joints should be filled in two or more runs, to prevent air entrapment.
  • When applying the sealant to a vertical joint, start application at the bottom of the joint so as to continuously support the sealant.
  • Applied sealant should be tooled to a smooth finish.
  • A minimum of surface lubricant such as dilute soap solution may be used to assist the process.
  • Any masking tape should be removed immediately after tooling.

CLEANING OF EQUIPMENT

  • Application equipment should be cleaned immediately with Sika® Colma Cleaner, acetone or any suitable cleaning solvent after use.
  • Hardened / cured material can only be mechanically removed.
 

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