Midland Industries SS6404-16-16 1 in Forb X Mnptf Adapter

Product Description

The MIDLAND INDUSTRIES SS6404-16-16 is a straight pipe adapter machined from 316 stainless steel, connecting a 1-inch Female O-Ring Boss (FORB) port to a 1-inch Male NPTF thread. At 2.22 inches in length, it provides a compact, leak-resistant transition between hydraulic and pipe thread systems. The O-Ring Boss end seals against a seated O-ring for a positive, pressure-tight connection, while the NPTF thread provides a dry-seal mechanical fit on the pipe side. Licensed plumbers, pipefitters, and fluid-power technicians are the primary installers of this fitting in industrial and commercial piping assemblies.

This adapter is suited for high-temperature and corrosive-environment applications where carbon steel or brass fittings are not appropriate. The 316 stainless steel construction handles operating temperatures up to 1,000 degrees F, making it appropriate for steam lines, chemical process piping, marine plumbing, and food-grade fluid systems. It is part of the SS6404 Series, which covers FORB-to-MNPTF configurations in a range of port sizes.

Key Features

• 316 stainless steel construction for corrosion resistance in aggressive media and marine environments
• 1-inch Female O-Ring Boss inlet provides a positive, leak-free seal without thread sealant on the ORB side
• 1-inch Male NPTF outlet forms a dry-seal mechanical fit with compatible female pipe threads
• Rated for operating temperatures up to 1,000 degrees F
• Compact 2.22-inch body length for tight installation clearances
• Thread designations: 1-5/16 - 12 (ORB side) x 1 - 11-1/2 (NPTF side)

Compatibility

Designed as an OEM-style replacement or direct-install fitting for hydraulic, process, and industrial piping systems requiring a Female O-Ring Boss to Male NPTF transition in 1-inch port size. Part of the Midland Industries SS6404 Series.

Installation Notes

Installation should be performed by a licensed pipefitter or fluid-power technician following applicable piping codes. De-energize and fully depressurize the system before removing or installing any fitting. Apply thread sealant or PTFE tape to the NPTF threads only - the ORB end seals via its O-ring seat and does not require thread sealant. Verify the O-ring is properly seated and undamaged before torquing the connection.