RectorSeal No. 5 is a premium-grade, multi-purpose pipe thread sealant designed for creating strong, leak-proof joints. It applies smoothly, won’t harden or crack, and is suitable for use on metal, PVC, CPVC, and ABS threaded connections. Ideal for plumbing, HVAC, gas lines, and general piping applications. NSF-approved and trusted for reliable sealing performance.