MasterSeal NP1 Medium Bronze – 10 pack


Due to a lack of availability of NP1, CRS suggests another alternative to this product called DuraLink 35 by Chemlink.  Click ‘here’ to see the colors available through CRS Inc!

Out of stock

SKU: NP1MB Category: Tags: ,


MasterSeal NP1 Medium Bronze

MasterSeal NP-1 Caulk is a versatile moisture-curing high performance polyurethane sealant with permanent elasticity.

NP-1 Caulk is great for active, vertical and horizontal interior, exterior joints. Other uses for NP-1 include expansion wall joints, floor and pavement joints, curtain walls, panel walls, precast walls, window frames, structural components, dams, spillways and storm-water drains. Substrates include concrete, masonry, aluminium and wood.


  • Ready to use Requires no mixing; reduces labor costs
  • Joint movement capability ±35% Provides excellent flexibility for keeping moving joints tight
  • Easy to gun and tool Speeds application and makes neater joints
  • Available in cartridges, Reduces jobsite waste, lowers disposal costs 20 ounce ProPaks, and in bulk
  • Gray Caulk color Matches common substrates
  • No primer required for most Lowers installation costs construction materials
  • Weather resistant Produces long-lasting weather-tight seals • Wide temperature-application range Suitable for all climates
  • Compatible with nonrigid coatings May be painted
  • Superior holding power Long-lasting roof tile instalation
  • UL listed Passes 4 hour, 4 inch, fire and hose stream test when used with Ultra Block
  • Suitable for water immersion Documented performance in wet areas
  • Low VOC content Meets VOC requirements in all 50 states

Additional information

Weight 11 lbs


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.