Description
This brass plug features 1/8" MPT (Male Pipe Thread) threading designed to seal 1/8" MPT openings typically located on spa heater tubes. The threaded opening matches standard pressure switch port dimensions, measuring approximately 3/8" in diameter across the threads or hole opening. Constructed from durable brass material for reliable sealing performance in hot tub heating systems. Important: Apply teflon pipe tape to threads before installation to ensure a proper watertight seal.
