The Sikaflex Primer 173 is compatible with a wide range of Sikaflex sealants, including Sikaflex NP 1, Sikaflex TX 1, Sikaflex NP 2, Sikaflex CR 195, Sikaflex SL 1, Sikaflex SL 2, Sikaflex HY 35, Sikaflex HY 100, and Sikaflex HY 150 series sealants. This primer ensures proper adhesion for these specific sealant types.