Masterseal NP 150 Sealant, ALUMINUM GRAY, 300ML (10.1OZ) - Masterseal NP 150 (formerly Sonolastic 150 VLM), ALUMINUM GRAY Color, Very Low Modulus / High Movement Capable Sealant. 300 ml Tube. Price/Tube.
Masterseal NP 150 Sealant, ALUMINUM GRAY, 300ML (10.1OZ)
$20.58 SALE $12.99
(Savings: $7.59)
  Order Options:  
  Add To Cart  
  Add To Saved Cart  


MasterSeal NP 150 (formerly Sonolastic 150 VLM), ALUMINUM GRAY Color, Very Low Modulus / High Movement Capable Sealant. 300 ml Tube. Price/Tube.

Ordering Notes:

  • Shipping leadtime: 1-2 business days.


MasterSeal NP 150 (formeraly Sonolastic 150 VLM) is a premium grade, 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. Elongation of 800-1000%, 140-180 PSI tensile and +50/-50% joint movement to keep moving joints weather-tight. USDA Food service rated. Paintable.


  • Exceptional adhesion to most materials including difficult surfaces such as glass, EPDM, and metal. Very UV resistant. Acoustic properties.
  • Recommended for: Houseboats, Trailers, RV windows and roofs, Wood frame windows, Food Service Areas, Exterior/Interior, EPDM Roofing, Metal Roofing (not suitable for Kynar or siliconized painted). Dissimilar materials with high expansion interfaces. Concrete, wood, grout, metal, glass. Sound control / Acoustic Dampening / Acoustic walls. Low odor.


  • Skins: tack free in about 1 hour at 75F
  • Service temperature range: -40 to 220° F
  • Expected service life: Up to 25 years
  • Shrinkage: None
  • Paintable: Yes


  • ASTM C 920, Type S, Grade NS, Class 100/50, Use NT, M, A, G, and O.
  • Federal Specification TT-S-001543A, Type II, Class A, Type Non-sag.
  • Federal Specification TT-S-00230C, Type II, Class A.
  • Corps of Engineers CRD-C-541, Type II, Class A.
  • USDA compliant for use in areas that handle meat and poultry.
  • ASTM C 1382 for use with EIFS wall systems.

More Product Information:


Email us at or
Call us at 1-800-474-7570 or 602-272-8128
You'll get a prompt reply!

similar product terms: masterseal np150, np150, np 150 sealant, sonolatic 150 sausage, Sonolastic, sonolastic 150, basf sonolatic, chemrex sonolastic, degussa sonolastic, polyurethane sealant, tripolymer sealant, high movement joint sealant, high performance sealant, polyether sealant, high performance caulk

  Associated Items:  
Duralink 50 Sealant, ALUMINUM-GRAY Color, 10.1 Oz Tube
ALUMINUM-GRAY Color Duralink 50 Sealant. High-Performance Super-Adhesion, 100% Solids Polyether Sealant with +/- 50% Joint Movement. 10.1 oz. Tube. Price/Tube. (24 tubes/case. Order full cases for extra discounts)
$9.00 $7.49
Quantity:     Add to Cart
MasterSeal P 179 Primer, 1-Pint (ground shipment only)
MasterSeal P 179 (formerly branded as Sonolastic Primer 2000). A clear primer for use with Polyether Sealants and Porous Surfaces. 1-pint Can. Price/Can. (Flammable, UPS Ground shipment only)
$71.05 $44.99
Quantity:     Add to Cart

A CSG Group Company

Shop with
Peace of Mind!