MasterSeal M 689 AS
MasterSeal M 689 AS is a solvent free, two component waterproofing membrane with antistatic properties to prevent sudden electrostatic discharges. Especially suitable for areas where a high degree of chemical and mechanical resistance is required, for example in secondary containment areas or where flammable or explosive substances (DF 1 and DF 2 accor. EN 13529) are stored or handled.
MasterSeal M 689 AS is highly reactive and must be applied by two-component spray equipment which initiates a quick reaction and ensures the rapid and safe application of the membrane.
Fast hardening: Sets in seconds and is ready for pedestrian traffic or recoating after 30 minutes. Full exposure to chemicals after 24 hours.
MasterSeal M 689 AS demonstrates a high resistance to a range of chemicals (tested according EN 13529 and certified according to WHG, the German Federal Water Resources Act) maintaining its tightness even when liquids are pressurized. Yellowing or discoloration at outdoor use does not reduce performance.
High abrasion and impact resistance. Can be directly exposed to vehicular traffic.
Extraordinary crack-bridging and elastic properties.
Remains elastic even at low temperatures. (Class A3 @-20ºC).
Antistatic properties to prevent sudden electrostatic discharges by dissipating the accumulated electric potential from the surface through the floor to the earthing point.