For a liquid tight seal, UNISEAL is the world's best product. UNISEALS provide more versatility than a traditional bulkhead, handling irregularities and curvatures with ease and is manufactured with Sarlink 4165 for the best results. The UNISEAL offers longevity, easy installation and a reduction in labor and material costs. It is made to withstand pressure and suction as well as oils, greases, sewage, waste, heat and cold. To achieve optimal results in straight or curved applications, the UNISEAL is the only choice to meet your sealing needs.