Rubber-Seal 2K Medallion Rapid Production 2.1 VOC Urethane Primer Surfacer, 1Gallon, Hardener included. RS-796 2.1 V.O.C. 2K Acrylic Urethane Primer is a high build, versatile two component system that can be utilized as a primer surfacer and a sealer. RS-796 2.1 V.O.C. 2K Acrylic Urethane Primer dries fast and sands easily without loading the sandpaper. This primer can be sprayed on the backside of properly cleaned e-coated panels without sanding. Formulated with corrosion resistant properties eliminates selfetch primer on cut through and other small bare metal areas. RS-796 2.1 V.O.C. 2K Acrylic Urethane Primer has excellent adhesion and solvent resistance with all topcoat paint systems. 4:1 Mixing ratio. RS-796