Spirax Sarco 3749081 Stem Seal Set PTFE Kit MKII NSMP is a PTFE-based replacement kit for Spirax Sarco MKII NSMP stem seals, sized for 1-1/4" to 2". The kit provides PTFE seal components designed to replace worn stem seals. It is intended for MKII NSMP installations requiring a stem seal replacement to restore sealing performance.
