Monofrax LLC is part of SEFPRO manufacturing network, and is a manufacturer of fused cast refractories and mortars located in Falconer, New York, United States. SEFPRO is the only refractory group worldwide fully dedicated to and streamlined for offering top-of-the-line refractory solutions specifically to the glass industries. For nearly a hundred years, SEFPRO has played a key role in the evolution of the refractory offer available to glassmakers over the world.