The Maestrini CR (DZR) Brass Plug is designed to securely cap open male-threaded lines in marine plumbing systems. Made of dezincification-resistant brass (commonly called CR or DZR brass), this plug withstands harsh saltwater environments, offering long-term reliability for through-hull blanks, auxiliary lines, or plumbing modifications.FeaturesCR / DZR Brass Material – resists corrosion and dezincification in marine conditionsTapered Plug Design – threads into female BSP/BSPT fittings, providing a tight sealSolid Construction – delivers durability and maintenance-free serviceVersatile Use – ideal for capping off pump outputs, unused lines, or temporary plumbing closuresSpecificationsMaterial: CR / DZR BrassPlug Type: Tapered male threadThread Options: BSP / BSPT, various sizesApplication: Blanking open ends of piping, plumbing systems