The PPG Commerical Coatings Delfleet 2.1 VOC Fast Dry Urethane Sealer, No. F4943, is lead- and chromate-free and fully compatible with all Delfleet Evolution primers. F4943 is designed to provide high gloss holdout and fast dry times. It can be topcoated in as little as 15 minutes, the company says. The advanced sealer also offers an improved pot life of up to three hours and a recoat window of three days. F4943 works with Delfleet Evolution's F4933 Fast Dry Hardener and is available in black, white and gray.