Mould Hollow Plug
Product Introduction: High-Quality Mold Hollow Plugs (Brass Hexagon Socket Plugs)
In injection molds, die-casting molds, and hydraulic systems, Hollow Plugs (also known as Brass Hexagon Socket Plugs or Hydraulic Plugs) are permanent sealing components used to close machined holes, oil passages, or air ports. As a mold manufacturer that produces for our own use, we maintain extremely stringent standards for sealing reliability, pressure resistance, and installation convenience of hollow plugs. Every plug undergoes precision machining and rigorous inspection to ensure no leakage, no loosening, and no corrosion during long-term high-pressure oil or water circuit operation.
Self-Produced and Self-Used, Rigorously Selected
We are not only a supplier of mold components but also a mold producer ourselves. Through extensive practical experience in our own molds, we have repeatedly validated the material selection, thread precision, sealing type, and pressure resistance of hollow plugs. Only those with reliable sealing, convenient installation, and exceptional durability are approved for our supply system.
Premium Brass, Corrosion and Pressure Resistant
Our hollow plugs are manufactured from high-quality brass, offering excellent corrosion resistance and thermal conductivity. Brass material is resistant to rust, effectively withstanding corrosive elements in hydraulic oil, cooling water, and chemical media. The dense material structure withstands high-pressure working environments, ensuring long-term leak-free operation.
Precision Threads, Reliable Sealing
Plug threads are precision machined with complete thread profiles and smooth surfaces, ensuring tight fit with threaded holes in molds or valve bodies. We strictly control the pitch diameter tolerance and taper accuracy to achieve excellent sealing performance while ensuring smooth installation. Thread types include metric coarse, metric fine, imperial PT, NPT, and other standards, adapting to different regional and industry requirements.
Hexagon Socket Drive, Easy Installation
The plug head features a standard hexagon socket design for easy installation and removal with hex wrenches. The hexagon socket drive provides high torque transmission and is resistant to stripping, allowing easy operation even in confined spaces. Socket depth and dimensions strictly follow international standards, compatible with universal tools.
Multiple Sealing Types, Adapting to Different Operating Conditions
We offer hollow plugs with various sealing structures to meet different pressure levels and media requirements:
Standard Thread Sealing Type: Sealing achieved through precision thread fit, suitable for medium and low-pressure applications
Sealant Assisted Type: Used with thread sealant to enhance sealing effect, suitable for high-pressure applications
Combined Sealing Washer Type: With combined sealing washer at the end face, sealing achieved through end face compression, suitable for applications requiring repeated disassembly
Tapered Thread Sealing Type: Using PT or NPT tapered threads, sealing achieved through thread deformation, suitable for ultra-high-pressure applications
Pressure and Temperature Resistant, Stable Performance
Brass hollow plugs can withstand static pressure tests above 30MPa, with an operating temperature range covering -20℃ to 200℃, fully meeting the conventional working conditions of mold hydraulic systems, cooling systems, and pneumatic systems. Specially treated plugs can adapt to higher temperatures or more corrosive media.
Complete Specifications, Customized Solutions
For standard specifications, we maintain regular inventory of metric (M6×1.0 to M30×1.5), imperial PT (1/8 to 3/4), NPT, and other thread sizes for quick dispatch. For non-standard customization, based on your mold oil circuit or air circuit design requirements, we offer custom hollow plugs with special thread sizes, special lengths, special head types, and multi-stage combination plugs.
We Can Also Source for You
If you have requirements for hollow plugs or other mold components, whether standard or non-standard, we can leverage our production experience and supply chain resources to select and procure the most suitable parts for you. We know molds, and we know components.
Contact us today for samples and a quotation.
