Industrial flooring systems

DUROFLEX - One component, thixotropic, polyurethane sealant


Permanently flexible, thixotropic polyurethane sealant. Due to their excellent adhesion and flexibility they are applicable on both horizontal and vertical surfaces. The sealant is available in three quality versions: DUROFLEX STANDARD, DUROFLEX PRO and DUROFLEX EXPERT 60. The different technical properties are listed in the summary table.


  • Expansion and construction joints of industrial fl oors
  • To seal prefabricated concrete structures
  • Flooring of parking lots, stores, shopping malls
  • Door and window frames
  • Construction of air-conditioning, ventilation and
  • heating systems
  • Crack sealing
  • Granite and marble surfaces
  • Dilatation joint of concrete both inside and outside


  • Excellent adhesion on almost all surfaces (concrete,
  • wood, ceramic, marble, metal, gypsum board, glass)
  • Excellent weather resistance
  • High chemical resistance
  • Outstanding resistance to thermal fluctuations (remains
  • flexible between -40 and 80°C)
  • Great resistance to aging
  • Paintable
  • Concrete gray color (custom colors are available in case
  • of large quantities)


The application surface must be sufficiently solid and clean, free from dust, grease, moisture, or any antiadhesion matter. Clean the sides of grouts from laitance and other poorly adhering materials. MICROPRIMER is recommended to get perfect adhesion. Application of MICROPRIMER is highly recommended for joints with extreme weather exposure or in cases requiring high performance. The edges of joints should be covered by adhesive tape if necessary.

DUROFLEX pastes should be applied by a press pistol or compressor. In order to provide proper fl exibility, please ensure that paste sticks only to the walls but not to the base of the gap. Apply DUROFOAM filling profile to control the depth of the gap and to avoid DUROFLEX sticking to the bottom. After use the tools can be cleaned with paper towel and then acetone or xylene.


Linear meters per sausage of a 600 ml according to the gap size:

WIDTH5 mm  10 mm  15 mm  20 mm  25 mm  
5 mm24 fm14 fm
10 mm6 fm4 fm3 fm2,4 fm
15 mm1,6 fm

(If the gap width is over 10 mm, the width/depth ratio should be at least 2:1)


DUROFLEX STANDARD: In 600 ml units, 15 sausages/package.
DUROFLEX PRO: In 600 ml units, 20 sausages/package.
DUROFLEX EXPERT 60: In 600 ml units, 15 sausages/package.


It can be kept in unopened package at temperature between +10°C and +25°C for 12 months in a dry, cool place. Protect from direct sunlight and from frost.


Data sheet

Declaration of performance

Safety datasheet