Print | Products > Aerospace Coatings, Pretreatments, Cleaners > Commercial / Civil Aviation > Specialty Products > PR-186, Adhesion Promoter Specialty Products PR-186, Adhesion Promoter PR-186 is designed to prepare metallic or painted substrates before application of sealants such as PR-1828. This material is highly recommended for applications between polythioether materials and manganese/dichromate cured polysulfide sealant. Safety Data Sheet (SDS) Technical Data Sheet Aerospace Adhesives Aerospace Sealants Aerospace Transparencies Transparent Armor and Specialty Products Aerospace Coatings, Pretreatments, Cleaners Commercial / Civil Aviation Military Specialty Coatings Surface Solutions Chemical Management Engineered Materials Semco® Packaging Aerospace Academy Aerospace Sealants - Preformed PPG Livery Lab℠ Find Products Find Products Help Terms & Conditions