​MasterSeal NP​ 150

Low-modulus, non-sag, elastomeric, hybrid sealant

Former​ly: Sonolastic​ 150 VLM

How does MasterS​eal NP 150 work?

MasterSeal NP 150 is a high performance, very low-modulus, high-movement, non-sag, fast-curing, hybrid sealant.

Recommended uses:

  • Vertic​​al or horizontal
  • Exter​ior or interior
  • Above grade
  • Joints with high movement
  • In place of silicone sealants
  • Store front systems
  • Expansion joints
  • Panel walls
  • Precast units
  • Aluminum, vinyl and wood window frames
  • Fascia
  • Parapets
  • Sanitary applications

What are the un​​ique features of MasterSeal NP 150?

  • Wide temperature application range
  • Non-staining formula for use on stone and other sensitive substrates
  • Available in ProPaks to reduce jobsite waste and lower disposal costs
  • Meets all state and federal VOC regulations

What are the benefit​s of MasterSeal NP 150?

  • Superior adhesion results in a long-lasting bond, helping to reduce call backs
  • Low modulus to accommodate for joint movement (100% extension in EIFS joints with little stress on bond line)
  • Can be painted with elastomeric coatings soon after installation
  • Easy to gun and tool, speeding up application
  • Weather resistant for long-lasting weather tight seals
  • Fast-curing helps to speed up jobsite production

US / Canada​ Product Information

Data​​​ Guide

Data Guide (French)

Certification Letter


LEED Letter

LEED v4 Letter

Technical Bulletin

Color Reference - MasterSeal NP 150

Color Reference - MasterSeal Single Component

Safety D​​​ata Sheets (SDS):

MasterSea​​l NP 150

MasterSeal NP 150 - Aluminum Gray

MasterSeal NP 150​ - Black

MasterSeal NP 150 - Limest​​one

MasterSeal NP 150 -​​​ Medium Bronze

MasterSeal NP 150 - O​ff-White

MasterSeal NP 150​​​ - Redwood Tan

MasterSeal NP 150 - Special ​​Bronze

MasterSeal NP 150 -​ Stone

MasterSeal NP 1​​50 - Tan

MasterSeal NP 150 - W​​hite

MasterSeal NP 150 -​​​​ Part B

USA - English

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

Certification Letter

pdf (55.38 Kb)

Color Reference

pdf (92.48 Kb)

Data Guide

pdf (270.46 Kb)

Data Guide (French)

pdf (367.36 Kb)

Guide Spec

doc (113.69 Kb)

Joint Sealants Brochure - Spanish

pdf (749.31 Kb)

LEED Letter

pdf (107.34 Kb)

LEED v4 Letter

pdf (69.96 Kb)

MasterSeal NP 150 Tech Bulletin

pdf (288.46 Kb)


zip (56.75 Kb)