Mark 3020 Calcium zinc Crompton-Witco Heat stabilizer for PVC plastisols >> Calcium / Zinc Polyvinyl Chloride (PVC) SEALANT >> Pre-formed tape / Gasket MARK ® 3020 NON TOXIC PVC STABILIZER Mark 3020 is a modified, non-toxic zinc stabilizer intended for the stabilization of flexible PVC compounds that must be sanctioned by the FDA.* Mark 3020 is primarily recommended as a heat stabilizer for refrigerator gaskets requiring excellent heat stability coupled with very low taste and odor. It can, however, be used for other flexible applications requiring excellent heat stability. Refrigerator Gaskets - Low levels of Mark 3020 used in conjunction with Drapex 6.8 epoxidized soy bean oil will provide excellent overall heat stability during processing. * Cleared by FDA under 21 CFR 178.2010, 184.1 Non-toxic calcium/zinc stabilizer for stabilization of flexible PVC compounds. Primarily used as a heat stabilizer for refrigerator gaskets. Provides very good heat stability, very low taste and odor.