Taper Pipe Taps • NPTF Dryseal taper pipe taps produce threads where a tight seal is achieved during assembly by metal-to-metal contact. Used for applications requiring a tight seal without the use of thread sealants. • Interrupted Thread taper pipe tap reduce friction, increase chip capacity and enhanced coolant flow to the cutting teeth for reduced chance of torn threads and improved thread quality. Recommended for a wide variety fo materials, especially soft ductile materials and materials producing long continuous chips.