CEMproof CEM 423

CEM 423 is one component sealant for floor and connecting joints .It is a one-part, elastic poly-urethane sealant that cures upon exposure to at-mospheric moisture. It is use according to IVD Instruction Sheet No. 1 (IVD = German Sealant Manufacturers’ Association).

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Manufaturer: BPA

Areas of Application

Sealing of interior and exterior expansion and connecting joints, e.g. in warehouses, underground car parks, manufacturing plants, parking garages, entrance halls, staircases. Sealing of joints in concrete, cast plaster floors, natural stones, sewage plants, etc.

Application

Adhesion surfaces must be dry, sound and free of dust and release agents. Compatibility with the substrate must be tested. Excellent adhesion on most common substrates.

  • tear-resistant,
  • resistant to chemicals and mechanical cleaning
  • excellent workability
  •  does not form bubbles during curing.

 

ITEM

SPECIFICATION

 

Density approx.

1.3 g/cm3 DIN EN ISO 10563

Application temperature

+5 °C to +40 °C

Service temperature

-40 °C to +80 °C DIN 52455-4

Hardness shore A

Approx. 35

Modulus at 100 % Extension

0.6 N/mm2, at 50 % 0.4 N/mm2 DIN EN 28340

Movement accommodation

Max. 25 %

Viscosity

Non-sagging

Skin formation time

Approx. 1 to 2 hours

Cure rate

Approx. 2 mm / 24 h

Elastic recovery

>80 %

Change in volume

Approx. -6 %

 

 

 

 

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