


A Hollow Hex Plug may seem like a simple component, but it plays a critical role in sealing off and protecting threaded pipe ends in high-pressure systems. Designed with a hexagonal recessed head (usually for Allen keys), this plug is ideal for compact installations where external wrenching space is limited. Its “hollow” body makes it lightweight, cost-effective, and easy to install or remove without compromising strength or sealing integrity.
Whether used in hydraulic systems, chemical processing lines, instrumentation setups, or gas pipelines, the hollow hex plug ensures a tight, leak-proof closure, safeguarding systems from contamination, pressure loss, or damage. Manufactured from durable materials like Stainless Steel, Brass, or Carbon Steel, these plugs offer high corrosion resistance and exceptional longevity—even under demanding conditions.
Perfect for industries that prioritize performance and space optimization, the Hollow Hex Plug is proof that big reliability can come in small packages.
Product Data
- Recessed Hex Design: Allows easy installation and removal using Allen (hex) keys, ideal for confined spaces.
- Compact & Space-Saving: Fits in tight assemblies where external hex head plugs may not be practical.
- Leak-Proof Seal: Provides a reliable and tight closure for threaded pipe openings.
- Robust Construction: Made from durable materials like SS 304, SS 316, Brass, or Carbon Steel.
- Corrosion & Pressure Resistant: Withstands harsh environments and high-pressure conditions.
- Versatile Thread Options: Available in NPT, BSPT, and BSPP threads for global compatibility.
- Available in Multiple Sizes: Wide range from 1/8” to 2” or more, with custom sizing available.
- Smooth Finish: Enhances appearance and protects against rust or surface degradation.
Technical Information :
- Material Options : SS 304, SS 316, SS 316L, Brass, Carbon Steel, Copper, Gunmetal . Bronze, other material on request
- Thread Types : NPT, BSPT, BSPP, Metric Threads (on request)
- Size Range : 1/8″ through 2″
- Working Pressure: up to 7500 psi
- Temperature Range: -65°F to 250°F (-54°C to 121°C) or even up to 1200°F (650°C) for some stainless steel types
Applications of Hollow Hex Plug
- Hydraulic and pneumatic systems
- Instrumentation and control panels
- Oil & gas pipelines
- Chemical processing equipment
- Water treatment and plumbing systems
- Automotive and aerospace fluid systems