MasterSeal 912 - Swelling gasket in paste form

Formerly Masterflex 612


MasterSeal 912 is a one component, moisture curing pre-polymer which is reswellable when in contact with water, suitable for the permanent sealing of construction joints in concrete structures.

Where is MasterSeal 912 applied?

  • Construction joints of every kind
  • Connecting joints in sheet pilings or diaphragm walls
  • Sealing of bell butt joints
  • Wall penetration for metal, plastic and concrete pipes, cable bushing
  • Bonding of MasterSeal 910 swelling waterstops on very uneven or rough surfaces. MasterSeal 910 swelling waterstops are pressed strongly into the paste bead
  • Surrounding steel reinforcement bars on pile heads

What are the advantages of MasterSeal 912?

  • Simple use
  • High swelling capacity in contact with water
  • Highly resistant to chemicals and saline liquids (see chemical resistance table)
  • Good adhesion to dry and moist surfaces (concrete, steel and plastics) Reversible swelling process

Product Information

Technical Data Sheet

Info & price request

Midrand: +27112032405 Westonaria: +27117541343
Coastal Regions: +27112032405


MasterSeal 912 TDS

pdf (80,74 Kb)
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