For over 30 years, NUCO Inc. has been actively improving human safety in commercial, residential, and public buildings by developing industry-first passive fire protection products. Under the Self-Seal® Firestopping Products brand, we introduced the first ULC tested and listed systems for intumescent firestopping sealants in Canada, developed low profile collars, and specialize in 100% silicone sealants,. At NUCO, we value an easy-to-understand firestopping package with a strong focus on training and installation competence. Visit our website to use our online firestop submittal generation tool and get more information on our passive fire protection capabilities.