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Brass Cap 3/8" FPT – OEM Replacement Fitting

Original price $4.35 - Original price $4.35
Original price
$4.35
$4.35 - $4.35
Current price $4.35

Part Number: 2350
Category: Pressure Washer Parts → Fittings & Adapters → Brass Caps & Plugs
Type: Brass Pipe Cap


The Brass Cap 3/8" FPT (Part #2350) is a durable OEM replacement fitting designed to securely seal unused male-threaded ports in pressure washer systems, pumps, plumbing assemblies, pneumatic equipment, and industrial fluid transfer applications. Featuring a 3/8-inch Female Pipe Thread (FPT) connection, this brass cap provides a reliable, leak-resistant seal while protecting system components from contamination, moisture, and debris.


Key Features & Benefits

  • Genuine OEM replacement fitting
  • 3/8" Female Pipe Thread (FPT) connection
  • Durable brass construction
  • Corrosion-resistant material
  • Leak-resistant sealing design
  • Protects unused threaded ports
  • Helps prevent contamination and debris entry
  • Suitable for pressure, fluid, and air systems
  • Compact and space-saving design
  • Long service life and dependable performance
  • Easy installation and removal

Technical Specifications

Part Number: 2350
Product Type: Brass Pipe Cap
Connection Size: 3/8" FPT
Thread Type: Female Pipe Thread (FPT)
Material: Brass
OEM Replacement: Yes
Application: Port Sealing and System Protection


Common Applications

  • Pressure washer systems
  • Pump assemblies
  • Water supply systems
  • Plumbing installations
  • Pneumatic and compressed air systems
  • Pressure gauge ports
  • Chemical application equipment
  • Industrial fluid transfer systems
  • Agricultural equipment
  • Wash-down systems
  • General maintenance and repair projects

Performance Benefits

  • Provides a secure leak-resistant seal
  • Protects unused threaded connections
  • Helps maintain system pressure integrity
  • Prevents dirt, moisture, and contaminants from entering the system
  • Corrosion-resistant for long service life
  • Durable construction for demanding environments
  • Simplifies maintenance and future system modifications
  • Reliable performance in fluid and air applications

Signs Replacement May Be Needed

Replace the cap if you notice:

  • Damaged or stripped threads
  • Visible corrosion or deterioration
  • Fluid or air leaks
  • Cracked fitting body
  • Difficulty maintaining a proper seal
  • Excessive wear from repeated installation
  • Physical damage from impact or over-tightening

Installation Notes

  1. Shut off system pressure before servicing.
  2. Inspect the male-threaded port for wear or damage.
  3. Apply appropriate thread sealant or PTFE thread tape if required.
  4. Thread the cap onto the fitting by hand.
  5. Tighten securely using the proper tool if necessary.
  6. Avoid overtightening to prevent thread damage.
  7. Pressurize the system and inspect for leaks.

Important: Verify compatibility with your system's thread size, pressure requirements, and application before installation.


Maintenance Recommendations

  • Inspect capped ports regularly for leaks.
  • Check threaded connections during routine maintenance.
  • Replace damaged or worn caps promptly.
  • Keep threads clean and free from debris.
  • Verify proper sealing after servicing.
  • Inspect fittings periodically for corrosion or damage.

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