CRL Limestone Grainy Textured Polyurethane Construction Sealant - Cartridge

CRL M66 is an advanced one-part, moisture-curing polyurethane sealant ideal for construction applications, offering primerless adhesion on most surfaces, including KYNAR® coated metals.
AAMA approved and VOC compliant with only 9 g/L, it provides durable, flexible performance in moving joints.
This eco-friendly, UV-resistant formula is perfect for sealing joints in concrete, masonry, and metal, ensuring a watertight installation in both storefront and curtain wall applications.
Compatible with insulating glass sealants, CRL M66 withstands temperatures from -75°F to 300°F, remains flexible over time, and is paintable within two hours, making it an excellent choice for both exterior and interior use.