Flex-Seal Utility Sealant from Sealing Systems is a plural component aromatic urethane with 800 percent elongation and a tensile strength of 3,200 psi. It is designed to prevent inflow and infiltration and provide corrosion protection at the grade adjustment ring section or joint section. It provides an ideal seal and will pass a vacuum test according to ASTM standards. 800-478-2054; www.ssisealingsystems.com; Booth 3504.