Stainless Steel Hex Plug Supplier in Saudi Arabia

Hex Plug

Our Hex Plugs are high-strength threaded fittings designed to provide a permanent or temporary seal for female threaded ports. Manufactured from premium SS 304 and SS 316L, these plugs feature a solid hexagonal head for easy installation with standard wrenches. Available in 150# Investment Cast and 3000# Forged configurations, they offer a reliable, leak-proof termination for Schedule 10 and Schedule 40 B2B industrial piping and pressure vessels.

SKU SC-FIT-032 Category

Product Overview

The Hex Plug is a fundamental component used to “plug” or terminate the end of a female threaded pipe fitting, valve, or manifold. Unlike round plugs or square head plugs, the hexagonal design allows for maximum mechanical advantage, ensuring the fitting can be tightened sufficiently to prevent leaks in high-vibration or high-pressure environments.

Reliable Tapered Seal

Our hex plugs utilize precision-machined NPT or BSP tapered threads. When threaded into a matching female port, the wedge-action of the tapered threads creates a metal-to-metal seal. When combined with industrial thread sealants or PTFE tape, these plugs provide a bubble-tight closure that is essential for maintaining system pressure and safety.

Industrial Grade Performance

To suit varying process requirements, we offer two distinct pressure classes:

  1. 150# Investment Cast: The standard choice for commercial plumbing, food processing, and low-pressure water treatment.

  2. 3000# Forged: A heavy-duty, high-integrity fitting designed to ASME B16.11 standards. This version is built for high-pressure steam, hydraulic oil, and aggressive chemical processing where wall thickness and metallurgical strength are paramount.

Superior Corrosion Resistance

Fabricated from AISI 304 or 316L Stainless Steel, these plugs are built to survive harsh environments. The 316L variant is particularly suited for chemical refineries and offshore applications where exposure to saltwater or acidic media would cause standard steel plugs to fail.

Technical Specifications

Technical Parameter 150# Class (Cast) 3000# Class (Forged)
Material Grade ASTM A351 CF8 (304) / CF8M (316L) ASTM A182 F304 / F316L
Thread Type Male NPT (ANSI B1.20.1) / BSP Male NPT (ANSI B1.20.1) / BSP
Design Standard ISO 4144 / MSS SP-114 ASME B16.11 / BS 3799
Head Style Solid Hexagonal Head Solid Hexagonal Head
Max Working Pressure 300 PSI @ Ambient Temp 3000 PSI / 6000 PSI
Size Range 1/8″ to 4″ (NPS) 1/4″ to 4″ (NPS)
Manufacturing Investment Casting Forged & CNC Machined

Applications

  • Pipeline Termination: Safely sealing off unused ports in water, gas, or chemical distribution headers to allow for future expansion.

  • Pressure Vessel Clean-outs: Providing a removable, high-pressure seal for drainage and inspection ports on stainless steel tanks and reactors.

  • Manifold Plugging: Terminating branch ports on instrument manifolds and chemical dosing blocks when not in use.

  • High-Pressure Hydraulics: Using 3000# forged hex plugs to securely seal hydraulic test ports and reservoir connections in industrial machinery.

  • Steam & Thermal Systems: Reliable termination of high-temperature condensate return lines and steam trap headers.

  • Oil & Gas Maintenance: Plugging bypass lines and vent ports in refinery piping during scheduled maintenance or system reconfigurations.

  • Marine & Offshore Utilities: Durable, corrosion-resistant termination of seawater cooling lines and ballast system ports on offshore platforms.