Polyurethane Saw-Cut Loop Sealant with 3/16” Flat Sealant Tip. Flat sealant tips allow installers to seal the loop in one pass, from the bottom up. Every case of BD-LG comes with a free Sealant Saver! Tough, durable polyurethane resin sealant designed to encapsulate, protect and insulate inductance loops for door, gate, and parking applications. Effectively seals out moisture and provides chemical resistance to de-icing salts, antifreeze, gasoline, motor oil, hydraulic brake fluid and other hydrocarbons. Application does not require mixing or heating. Permits vehicular traffic immediately after application with no need for lane closure. DOT APPROVED by most States. Available in gray or black.