MasterSeal 7000 CR - The best solution for extreme wastewater challenges

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Proven durability: The concrete infras​​tructure of wastewater treatment systems is subject to complex physical and chemical attacks. MasterSeal 7000 CR is specially designed to address these challenges.


Unique Combination of Application and Performance Properties

MasterSeal 7000 CR's high resistance to abrasion and biogenic sulfuric acid corrosion are ideal to withstand the severe conditions that occur in pretreatment and aeration tanks, digesters, or sewers. Its dynamic and static crack-bridging abilities protect concrete from cracks thus prolonging the structure's life cycle.

Product properties

 Fast and easy application by rolling or spray

 Excellent curing properties, which reduce downtime

 Specific chemical resistance, including high concentrations of biogenic sulfuric acid

 Crack-bridging for gaps of up to 0.7 mm

 Maximum moisture tolerance, including application on humid substrates

Fast and Easy application – even on humid substrates

The easy application of MasterSeal 7000 CR by spray or roller, as well as its compatibility with damp substrates, suit the conditions of wastewater facilities particularly well. Downtime – which is always critical when stopping a wastewater process – is also reduced because of its fast-curing properties that allow contact with water only 24 hours after application at 20oC.

For maximum application performance do not apply at temperatures below +5°C nor above +40°C. For higher temperatures consult BASF Technical Services department.

Spray Applied 

Fast and easy application by spraying


Hand Applied 

Fast and easy application by rolling


Challenges in wastewater Treatment


1. Strong waterflow and water containing solid particles > Abrasion

2. Concrete shrinkage and steel reinforcement corrosion > Cracks, leakage and structural damage

3. Presence of chemicals and conditions for Biogenic Sulfuric Acid > Chemical attack


Increase the life cycle of the structures and reducing maintenance and repair

Fields of application

  • Urban and industrial wastewater treatment both in inflow and outflow areas
  • Biogas plants
  • Secondary containment in industry
  • Sewage effluent pipelines

Thickener tank at a wastewater treatment plant in Poznan, Poland


Secondary containment area at a wastewater treatment plant in Málaga, Spain


Chemical protection of manholes in Italy


Chemical protection of gunwales in Italy


MasterSeal 7000 CR product range

MasterSeal M 790​​​
MasterSeal P 770


MasterSeal 7000 CR - 6 Factors to Consider When Choosing the Right Waterproofing Coating

pdf (1.89 Mb)

MasterSeal 7000 CR - Waterproofing concrete in aggressive environments

pdf (2.20 Mb)

MasterSeal M 790_TDS

pdf (753.10 Kb)

MasterSeal P 770_TDS

pdf (682.63 Kb)