Parker 318P-6PP Polypropylene Pipe Plug Mpt Black

Product Description

The PARKER 318P-6PP is a 3/8-inch polypropylene pipe plug used to seal off pipe openings in fluid-handling systems. Manufactured from black polypropylene, this plug threads into female pipe thread ports using standard male pipe thread (MPT) end connections. It meets FDA and NSF-51 certifications, making it suitable for use in food-contact and potable water applications. Licensed plumbers and pipefitters install this plug during system testing, decommissioning, or wherever a port must be capped off cleanly. The polypropylene construction offers resistance to corrosion and many common chemicals, reducing long-term maintenance concerns in wet or chemically active environments.

This plug is suited for residential and light commercial plumbing, irrigation, food processing, and water treatment applications where a reliable, code-compliant pipe closure is needed. Its 3/8-inch MPT thread size covers a common port diameter found on valves, manifolds, tees, and other threaded fittings. The black color and plastic construction make it appropriate where metal plugs could cause galvanic corrosion or where weight reduction is a factor. This SKU ships as a single plug with a minimum order quantity of 5 units.

Key Features

• 3/8-inch MPT thread for direct installation into female pipe thread ports
• Polypropylene construction resists corrosion and common chemicals
• FDA and NSF-51 certified for food-contact and potable water system use
• Black color indicates polypropylene material for quick field identification
• Lightweight plastic body eliminates galvanic corrosion risk in mixed-metal systems

Compatibility

Designed as a standard 3/8-inch MPT pipe plug compatible with female pipe thread (FPT) ports on valves, manifolds, tees, and fittings in plumbing, irrigation, and fluid-handling systems requiring FDA or NSF-51 compliant components.

Installation Notes

Installation is performed by licensed plumbers or pipefitters. Depressurize and drain the line before removing any existing fitting or installing this plug. Apply an appropriate thread sealant tape or compound rated for plastic fittings. Hand-tighten first, then snug with a strap wrench — avoid pipe wrenches that can crack polypropylene bodies. Verify the system holds pressure before returning to service.