Permlastic is a polysulfide, condensation-cured, elastomeric impression material in three viscosities. Heavy body is used whenever a stiffer material is indicated Regular body is used for partial- or full denture impressions because it has a high degree of flow that will register the finest detail ad Regular body can also be used with light body for crown and bridge impressions and will not tear when being removed from undercuts Light body syringe material is used for inlay and fixed bridge impressions Light body bonds completely with both regular and heavy bodies, resulting in impressions with great accuracy and fine definition