MasterSeal NP 100 is formulated with unique BASF polymers that allow for versatile adhesion to a variety of substrates while accommodating high movement and providing long term durability. MasterSeal NP 100 is a high performance, low modulus, high movement, non-sag, fast curing, ready-to-use hybrid sealant. It combines the best qualities of organic and silicone sealants to keep moving joints weathertight.