Microsoft Word basf-masterseal-gg-470-tds

TYPICAL PROPERTIES*

 

 

Colour Grey 

Solid content 

97% 

Viscosity Thixotropic 

paste 

Tack free at 25°C 

24 hours 

Staining Generally 

non-staining 

Slump Gun Grade 

Nil 

Shore A Hardness 

20-25 

Application 

temperature 

5°C to 40°C 

Recommended 

movement 

Transverse ±25% M.A.F. 

(Movement Accommodation 

Factor) 

 

PACKAGING

 

Gun Grade: 

2 pack units, a total of 3 litres 

 

STANDARDS

 

ASTM C 920-02 

Type M, Class 25 

BS 5212 : Part 1 : 1990  Compliance 

BS EN ISO 11600 

Type F, Class 25LM 

TT-S-00227E General 

compliance 

 

ESTIMATED SET AND CURE TIMES

 

 

Property 25°C  40°C 

Pot life 

2 hrs 

45 min 

Initial set 

24 hrs 

5 hrs 

Full cure 

2 weeks 

7 days 

 

JOINT SIZE

 

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 

surfaces. 



 

10mm for all porous surfaces. 



 

20mm for joints exposed to hydrostatic 

pressures. 



 

5mm below flush for joints exposed to traffic. 

 

APPLICATION PROCEDURE

 

 

JOINT PREPARATION SURFACE 

TREATMENT

 

 

Concrete & 

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. 

Where required, a bond breaking tape should be applied 

before priming. 

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