Permatex Form-A-Gasket Sealant 2 is a flexible, slow-drying black paste sealant that creates a reliable, leak-proof seal for flanges, fittings, and flexible assemblies. Its non-hardening film enhances gasket longevity and maintains a secure seal under vibration and thermal cycling. Ideal for use in automotive and industrial maintenance, especially where disassembly may be required. Available in an 11 oz tube for convenient application.