MasterSeal 595: Rapid-setting water-stop mortar

Formerly: Emaco Plug

How does MasterSeal 595 work?

MasterSeal 595 is a cement-based, water-stop mortar. It will stop running and seeping water through cracks in concrete under hydrostatic pressure. It can also be used to provide a watertight seal in pipes, tanks, manholes, and a variety of other locations.

Recommended uses:

  • Stopping running water through seeping cracks under hydrostatic water pressure
  • Providing watertight seals at manhole inlet, outlet, and invert connections
  • Providing watertight seals at joints in sewer lines
  • Providing watertight seals in concrete pipes, tanks, wet wells
  • Patching construction faults in precast and cast-in-place structures
  • Grouting anchors and bolts
  • Forming water-resistant coves at the junction of floors and walls

What are the features of MasterSeal 595?

  • Sets in 45 – 90 seconds
  • Controlled set behavior with no flash set
  • Very rapid strength gain
  • Forms watertight seals
  • Freeze/thaw resistant
  • One-component

What are the benefits of MasterSeal 595?

  • Stops running water
  • Reliable strength gain
  • Resistant to washout
  • Stops infiltration or exfiltration
  • Suitable for cold, wet environments
  • Just add water before using

US / Canada Product Information

Data Guide

Safety Data Sheet

Direct contact

Master Builders Solutions Technical Support

Construction Systems


Safety Data Sheet (SDS)

Find all available safety data sheets for this product.

Product Certifications

Generate a free certificate of conformance for a specific BASF construction product.

Related Literature

Data Guide

pdf (246.66 Kb)