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Master Builders MasterSeal NP1 Tan 10oz Cartridge 50428972

Master Builders MasterSeal NP1 Aluminum Grey ProPak 20oz Sausage 50433596

Master Builders MasterSeal NP1 Aluminum Grey ProPak 20oz Sausage 50433596

Master Builders MasterSeal NP 1 White 10oz Cartridge 50426722


MasterSeal NP1 is a one-component, high-performance, non-priming, gun-grade, elastomeric polyurethane sealant. It requires no mixing and typically requires no priming to bond to many materials, including concrete and masonry.

  • Weather resistant for long-lasting weather tight seals
  • Joint movement capability ±35% provides excellent flexibility
  • Compatible with non-rigid coatings and can be painted
Availability: In stock ( 30 Available )
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MasterSeal NP 1 is a high-performance, one-component, polyurethane sealant offering exceptional versatility and reliability. This product is specifically designed for a wide range of sealing and caulking applications in active exterior and interior joints. Its unique formula allows for durable adhesion to most construction materials, making it an ideal choice for both commercial and residential projects. MasterSeal NP 1's key features include its weather-resistant properties, flexibility, and ease of application, ensuring long-lasting protection and a flawless finish in a variety of environments.

Engineered to meet stringent industry standards, MasterSeal NP 1 boasts impressive technical specifications. The sealant has a tensile strength of 250 psi, with a high elongation capability of up to 800%, ensuring it maintains integrity and functionality under movement and weathering. Its application temperature range is between -40°F to 180°F, making it suitable for various climatic conditions. The product cures to a durable rubber that is resistant to weathering with an estimated service life of up to 20 years under normal conditions.

Interior and exterior
Above and below grade
Immersed in water
Expansion joints
Panel walls
Precast units
Aluminum and wood window frames
Vinyl siding
Store front assemblies

One-component formula requires no mixing, helping to reduce labor costs. Joint movement capability ±35% provides excellent flexibility for keeping moving joints weathertight. Easy to gun and tool, speeding up application and making neater joints. No primer required for most construction materials lowering installation costs. Weather resistant for long-lasting weather tight seals. Compatible with non-rigid coatings and can be painted. Superior holding power for long-lasting roof tile installation. See datasheet for more information.

More Information
Brand Master Builders
Color White
Size 10oz
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