Profile: Leak Sealers Environmental delivers on-line steam process and VOC leak sealing services. Our on-stream leak sealing capabilities include specialty custom fabrications, operable valve enclosures, 90 elbows, line enclosures and flange clamps. We offer clamp reclamation program, steam loss abatement program, bolt torquing service and valve & concrete repair services. We render services for liner coatings, as well as non-slip coatings and preventative maintenance pipe integrity coatings for external corrosion or corrosion under insulation.