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STZ Industries 4 in. MIP each Galvanized Malleable Iron Plug
STZ Industries 4 in. MIP each Galvanized Malleable Iron Plug
STZ Industries 4 in. MIP each Galvanized Malleable Iron Plug

STZ Industries 4 in. MIP each Galvanized Malleable Iron Plug

The STZ Industries 4 in. MIP Galvanized Malleable Iron Plug is designed to seal 4-inch male iron pipe connections with enduring strength and reliable corrosion resistance. Crafted…

Stz Industries MPN 351P-4
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This product isn’t sold on our website — see your local hardware store.

Typical Store Price i
Typical store price: low $24.99, average $28.99
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About Product Overview

The STZ Industries 4 in. MIP Galvanized Malleable Iron Plug is designed to seal 4-inch male iron pipe connections with enduring strength and reliable corrosion resistance. Crafted from durable malleable iron and finished in galvanized coating, this plug is built to stand up to demanding piping environments while keeping contaminants out of your system.

  • Material: Malleable iron with a galvanized finish for long-lasting resistance to rust and moisture.
  • Connection: 4 in. MIP end, ready to thread securely into compatible piping.
  • Lead content: Lead-free construction for safer use in a variety of piping applications.
  • Maximum pressure: 300
  • Maximum temperature: 150
  • Packaging: Bagged to protect the plug during storage and handling
  • Product type: Plug

Use cases and applications:

  • Cap unused or temporarily out-of-service 4-inch pipe runs in commercial, industrial, or residential projects.
  • Seal plumbing or process lines in basements, mechanical rooms, or outdoor installations where moisture exposure is a concern.
  • Create a safe, leak-tested closure in transportable equipment or temporary testing setups that rely on robust, threaded connections.

Installation tips and best practices:

  • Prepare threads with appropriate sealant or PTFE tape designed for metal-to-metal piping connections. This ensures a clean seal and easier future removal.
  • Thread the plug clockwise into the 4 in. MIP pipe until snug, then tighten to the point of resistance without forcing the fit to avoid thread damage.
  • Periodic inspection is recommended in damp or outdoor environments; replace if threads show corrosion or the seal integrity diminishes.

Why this plug stands out:

  • Galvanized finish provides corrosion resistance in challenging environments, extending service life where moisture or humidity is present.
  • Lead-free construction supports safer handling and suitability for a range of piping systems, including those in commercial or light industrial settings.
  • The combination of a 4 in. MIP end and durable malleable iron gives you a надежный, reusable closure that can be relied on for both temporary and more permanent sealing needs.

Who benefits most from the STZ Industries 4 in. MIP Galvanized Malleable Iron Plug?

  • Professional plumbers, HVAC and facility managers, and industrial pipe technicians who require a dependable, lead-free plug for 4-inch threaded piping.
  • Project teams needing a robust, ready-to-use closure with a protective galvanized surface to resist corrosion in mixed environments.

The Details Specifications

Brand Stz Industries
SKU 4289906
UPC 019442150488
Unit 0
Case Pack Quantity 6 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 5 × 5 × 2
Weight 3 lbs
Cubic Feet 0.03933 ft³
Country of Origin VIETNAM
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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