High-quality Brass/Copper Alloy PU Bulk Head Assemblies designed for durable, corrosion-resistant, and leak-proof performance in pneumatic and fluid systems. Precision-machined with smooth internal surfaces and strong forged construction for secure panel-mounted tube connections, vibration resistance, and reliable sealing. Widely used in HVAC, refrigeration, hydraulic, marine, and industrial applications, with OEM customization in sizes, threads, and branding.