product: acryrub firestop is a one-part acrylic latex caulk designed for sealing around through penetrations in fire-rated wall and floor assemblies to return those assemblies to their fire-rating. characteristics: permanent color, uv resistant, non-yellowing, very good adhesion on many materials, very easy application. applications: sealing through penetrations through fire rated wall and floor assemblies. color: red. packaging: 10.1 fl. oz. cartridges. surfaces: type: all usual building surfaces state of surface: clean, dry, free of dust and grease. preparation: no primer required for porous surfaces. we recommend a preliminary compatibility test, especially on pvd and non-porous materials.