Fitting Plug 1/8"" Square Head

Fitting Plug 1/8"" Square Head

This is a 1/8" square head pipe plug, designed to provide a secure, reliable seal for unused female NPT threaded ports. It is commonly used in the hydraulic, fuel, and water systems of concrete mixers and other heavy machinery to prevent leaks and protect internal components from contamination. Made from materials like steel, stainless steel, or brass, these plugs are essential for maintenance and repair, allowing technicians to cap off lines or ports during service or when a feature is not in use. The tapered NPT (National Pipe Taper) threads create a tight seal that can be enhanced with thread sealant.

Key Features

• 1/8"-27 NPT male threads for compatibility with standard pipe fittings.
• External square head for easy installation and removal with a wrench.
• Used to seal unused ports in hydraulic, water, and pneumatic systems.
• Tapered thread design creates a mechanical seal.
• Available in various materials including steel, stainless steel, and brass for corrosion resistance.

Fits These Mixers

McNeilus, Terex, Con-Tech. This is a general-purpose fitting plug used across multiple systems on concrete mixer trucks from manufacturers like McNeilus, Con-Tech, and Terex. It is commonly found sealing unused ports on hydraulic manifolds, water pumps, gearboxes, and air system components.

All measurements ± standard manufacturing tolerance.

Product descriptions are drafted with automated tools and reviewed as time allows. While we work to keep them accurate, specifications and fitment should be confirmed with a Customer Service specialist at 800-745-3414 before purchase. Found an error? Let us know and we’ll fix it.