Permatex Spray Sealant Leak Repair is a convenient, sprayable sealer that quickly forms a durable rubber barrier to stop leaks. Its wicking action allows it to seal hard-to-reach leaks without requiring disassembly or part removal. It's designed for low-pressure leaks in a variety of applications, including hoses, oil pans, differentials, transmission pans, fluid reservoirs, and plastic, PVC, and metal pipes and their connections. Unlike liquid additive sealers, it won't swell or foul internal seals. It resists common shop fluids. Multiple coats may be required to fully seal some leaks.