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Sonolastic 150 VLM (MasterSeal NP 150)

Part of the Sonolastic (MasterSeal) series

Sonolastic 150 VLM (MasterSeal NP 150)

Sonolastic® 150 with VLM Technology

is a premium, very low-modulus, high movement, non-sag, fast-curing, ready to- use, silyl-terminated polyether sealant. It combines the best qualities of organic and silicone sealants to keep moving joints weather tight.



  • For sealing a variety of building joints, particularly in EIFS, against water and air intrusion

  • Joints with extreme movement

  • In place of silicone sealants

  • Curtain wall construction

  • Expansion joints

  • Panel walls

  • Precast units

  • Aluminum, vinyl, and wood window frames

  • Fascia

  • Parapets

  • Sanitary applications


  • Vertical or horizontal

  • Exterior or interior

  • Above grade


  • EIFS

  • Stucco

  • Aluminum

  • Concrete

  • Masonry

  • Wood

  • Stone

  • Glass

  • Vinyl

  • Fiber cement siding

Related Products

Product Description
Closed Cell Backer Rod and Soft Cell Backer Rod Sonolastic® Closed-Cell Backer-Rod is a closed-cell, polyethylene foam joint-filler and backing for elastomeric sealants.
MasterSeal® NP 100™ MasterSeal® NP 100™ is a high performance hybrid sealant.
Primer 733/766 (MasterSeal P 173/176) SONOLASTIC® PRIMER 733 AND PRIMER 766 Primers for Sonolastic® sealants.
Sikaflex®-15 LM Sikaflex®-15 LM is a High-performance, low-modulus elastomeric sealant.

Products in this Series

Product Description
NP 2/SL 2 Color Pack (MasterSeal 900) Sonolastic NP 2 Color Pack is a product used for tinting Sonolastic multi-component sealants.
NP2/SL2 Accelerator (MasterSeal 905) Sonolastic NP 2 Accelerator is a product used in Sonolastic Multi-component sealants.
Primer 733/766 (MasterSeal P 173/176) SONOLASTIC® PRIMER 733 AND PRIMER 766 Primers for Sonolastic® sealants.
SL 2 Self Leveling/ Slope Grade (MasterSeal SL 2) SONOLASTIC® SL 2™ Multi-component self-leveling polyurethane sealant.
Sonolastic 150 VLM (MasterSeal NP 150) SONOLASTIC® 150 with VLM Technology Very low-modulus, nonsag, elastomeric, silyl-terminated polyether (hybrid) sealant.
Sonolastic Clear 25 (MasterSeal NP 125) SONOLASTIC® CLEAR 25™ One-component, clear, elastomeric, gun-grade thermoplastic roofing sealant and tile adhesive.
Sonolastic NP 1 (MasterSeal NP 1) MasterSeal® NP 1™ is a one-component, high-performance, non-priming, gun-grade, elastomeric polyurethane sealant manufactured by BASF.
Sonolastic NP 2 (MasterSeal NP 2) SONOLASTIC® NP 2™ Multiple-component high-performance polyurethane sealant.
Sonolastic Primer 770 (MasterSeal P 220) Sonolastic Primer 770 is a primer used with the Sonoguard Traffic Coating System.
Sonolastic Primer 772 (MasterSeal P 222) Sonolastic Primer 772 is a primer used with the Sonoguard Traffic Coating Systems
Sonolastic SL 1 (MasterSeal SL 1) SONOLASTIC® SL 1™ is a One-component elastomeric, self-leveling polyurethane sealant.
Sonolastic TX-1 (MasterSeal TX 1) SONOLASTIC® TX 1 One-component, texturized, moisture-curing, gun-grade elastomeric polyurethane sealant