Putties
Putties

Nexa Mastic PU

Nexa Mastic PU

NEXA MASTIC PU is a low-modulus elastic sealant designed for active expansion joints. It is specially formulated to prevent bubble formation during curing, even under high temperature or high humidity conditions. The product exhibits excellent thixotropy, making it suitable for large expansion joints. It cures with ambient humidity, forming an elastic sealant with a 50% movement accommodation factor and exceptional adhesion and bonding properties. It performs well on problematic surfaces such as aluminum, iron, and polycarbonate. UV-resistant versions are available (non-UV-resistant versions also available).