MasterSeal NP 474 - Versatile single component elastomeric polyurethane sealant and adhesive

Formerly Masterflex 474


MasterSeal NP 474 is a single component, gun grade, elastomeric polyurethane joint sealant and adhesive.

Where is MasterSeal NP 474 applied?

MasterSeal NP 474 is recommended for internal and external sealing of construction and expansion joints in both vertical and horizontal situations, on a variety of substrates such as concrete and metals. It is also suitable for movement joints in submerged areas. 

Application areas include: 

  • Parking decks 
  • Warehouse, production area floors and pavements 
  • Reservoirs 
  • Window perimeter 
  • Weather proofing joints in curtain walls
  • Precast parapet panels in bridges and flyovers
  • Bonding tiles and ridge tiles
  • Joining and sealing in the steel construction industry 

MasterSeal NP 474 is not recommended for use on weak substrates such as the insulating panels used in EIFS, please consult your local BASF Construction Chemicals SA Technical Services Department for advice.

What are the advantages of MasterSeal NP 474?

  • High modulus and hardness makes MasterSeal NP 474 tough and resistant to mechanical loads
  • Excellent movement accommodation of ± 25% helps maintaining moving joints airtight and watertight 
  • UV resistant – suitable for external applications
  • Wide service temperature range – suitable for all climatic conditions
  • Can be over painted – enables aesthetic finishing
  • Easy extrudability – easy to apply 
  • Adheres, on a majority of substrates, without primer (cement, earthenware, metals, wood, etc.)

Product Information

Technical Data Sheet

Info & price request

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


MasterSeal NP 474 TDS

pdf (107,67 Kb)
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