Midland Industries 6900O68 Straight Swivel Adapter

Product Description

The MIDLAND INDUSTRIES 6900O68 is a straight swivel adapter designed for hydraulic line connections requiring a 3/8-inch Male O-Ring Boss (ORB) on one end and a 1/2-inch Female NPSM swivel on the other. Built from steel, this adapter handles a maximum operating pressure of 3600 psi and is rated for temperatures up to 375 degrees F. The swivel end allows the mating hose or fitting to rotate freely during installation, reducing assembly torque and minimizing line twist. Hydraulic technicians and plumbing mechanics use this fitting to transition between ORB-ported components and NPSM-threaded lines in industrial and mobile hydraulic systems.

The 6900O68 belongs to the 6900 Series of Male O-Ring to Female NPSM swivel adapters. It is suited for use in hydraulic circuits found in industrial machinery, mobile equipment, and fluid power systems where high-pressure steel fittings are required. The 9/16-18 thread on the ORB end mates directly with SAE O-Ring Boss ports, while the 1/2-14 NPSM swivel thread accommodates standard NPSM-threaded hose ends and components.

Key Features

• Straight configuration with a free-rotating female NPSM swivel end for easier assembly and reduced line stress
• Maximum operating pressure of 3600 psi for demanding hydraulic applications
• Rated to 375 degrees F for use in high-temperature fluid systems
• Steel construction for durability in industrial and mobile hydraulic environments
• 9/16-18 Male O-Ring Boss thread mates with SAE ORB-ported valves, pumps, and manifolds
• 1/2-14 Female NPSM swivel thread provides a leak-resistant connection to mating hose ends

Compatibility

Designed for hydraulic systems requiring a 3/8-inch Male O-Ring Boss to 1/2-inch Female NPSM swivel straight adapter; part of the MIDLAND INDUSTRIES 6900 Series Steel Pipe Swivel Adapters line.

Installation Notes

Installation should be performed by a qualified hydraulic technician or pipefitter. Depressurize and bleed the hydraulic system fully before removing or installing any fittings. Inspect the O-ring seating surface on the ORB port for nicks or debris before threading the adapter in, as surface defects will cause leaks. Do not use thread sealant tape on the ORB end; the O-ring provides the primary seal.