Pneumatic Hex Socket Blanking Plug | Nickel-Plated Brass Port Seal (1/8" to 1/2")

Flush and Secure Port Sealing When building custom pneumatic circuits or modifying air manifolds, you often end up with unused air ports that need to be completely sealed to maintain system pressure. The Pneumatic Hex Socket Blanking Plug is the professional solution. Unlike bulky hex-head bolts, this plug features an internal hex drive. This allows the plug to sit completely flush with the surface of your manifold or solenoid valve, saving valuable space in tight control cabinets and preventing accidental snagging. Premium Nickel-Plated Brass Durability Air compressors generate moisture, which can quickly rust standard steel plugs, making them impossible to remove later. These blanking plugs are constructed from high-density brass and finished with a premium pearl nickel plating. This combination provides the ultimate defense against rust, corrosion, and the high-pressure stress of industrial pneumatic systems. 💡 Pro Tip from Our Technicians "To ensure a 100% airtight seal, you must wrap the threads of these plugs with 2 to 3 layers of Teflon tape (plumber's tape) before installation. Always use the correct size Allen key (hex wrench) to tighten them—using the wrong size can strip the internal socket! If you are repairing a machine and aren't sure if your port is 1/8", 1/4", 3/8", or 1/2", don't guess. Bring your manifold directly to our Sham Shui Po store. Our team at Sun Cheong Computer Co. Ltd. will use our digital calipers to test-fit the exact plug you need on the spot."