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The HOLO-KROME 12010 is an alloy steel socket pressure plug designed to seal threaded ports in hydraulic, pneumatic, and fluid-system assemblies. With a 1/2-14 thread size and an overall length of 17/32 inches, this compact plug installs using a 3/8-inch hex key and seats with a 7/8-inch-per-foot taper to create a secure, leak-resistant closure. Alloy steel construction gives the plug the strength and hardness needed to withstand the pressure demands common in industrial and mechanical service environments. Plumbers, pipefitters, and mechanical technicians working on fluid distribution systems, test ports, and service access points are the typical installers.
This socket pressure plug is suited for use in hydraulic circuits, pneumatic systems, and general fluid-power assemblies where a threaded port must be capped and sealed against pressure. The tapered thread design engages the fitting bore to form a tight mechanical seal without requiring additional sealant compounds in many standard applications. Its small form factor makes it practical in tight-clearance installations where conventional hex-head plugs would not fit.
Designed as an OEM-style replacement or service plug for threaded pressure ports using 1/2-14 pipe thread in hydraulic, pneumatic, and fluid-system assemblies.
Installation is performed by pipefitters, hydraulic technicians, or mechanical service professionals. Depressurize and isolate the system completely before removing or installing any pressure plug. Use a calibrated 3/8-inch hex key and tighten to snug engagement without overdriving, which can damage the threaded port. Follow applicable industry codes and equipment manufacturer guidelines for thread sealant use with tapered pipe-thread fittings.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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