Totally enclosed air lift bag is one kind of cylindrical totally sealed type underwater lifting bags, known as salvage pontoon, inflatable buoyancy units, or buoyancy bags.

Totally enclosed air lift bags can be used for buoyancy support and refloatation operation in shallow water and on the surface, support/salvage pontoons for bridges, floating platforms, dock gates, sunken objects or military equipment. Totally enclosed air lifting bags offer an effectual method of reducing the draught of vessel and floating underwater structures. Then also provide an ideal system of buoyancy for cable or pipeline and static buoyancy support.

Totally Enclosed Type air lift bags are cylindrical shaped units, fabricated from heavy duty polyester cloth coated with P.V.C, completely equipped including the appropriate quantity of automatic air relief valves, certified heavy duty polyester webbing with shackles (with safe working factor 6:1), and air inlet stainless/brass ball valves.