Midland Industries SS6405-20-20 Stainless Adapter 1-1/4 in

Product Description

The MIDLAND INDUSTRIES SS6405-20-20 is a straight pipe adapter machined from 316 stainless steel, designed to connect a 1-1/4-inch Male O-Ring Boss (ORB) port to a 1-1/4-inch Female NPTF thread. The part measures 2.129 inches in length and carries a thread specification of 1-5/8-12 on the ORB end and 1-1/4-11-1/2 on the NPTF end. It is rated to 1,000 degrees F operating temperature, making it suitable for high-heat fluid and gas transfer applications. Plumbers, pipefitters, and industrial maintenance technicians install this fitting where a hydraulic or pneumatic O-Ring Boss port must transition to a standard tapered pipe thread connection.

This adapter is used in hydraulic systems, pneumatic lines, fuel and lube oil plumbing, and industrial fluid transfer installations where a leak-free transition between ORB and NPTF threaded connections is required. The 316 stainless steel construction makes it appropriate for corrosive environments, marine installations, chemical processing lines, and high-temperature service. It fits standard 1-1/4-inch ORB boss ports found on pumps, manifolds, valves, and actuators.

Key Features

• 316 stainless steel construction for corrosion resistance in harsh and marine environments
• 1-1/4-inch Male O-Ring Boss to 1-1/4-inch Female NPTF configuration for common hydraulic-to-pipe transitions
• 1,000 degrees F operating temperature rating for high-heat service
• Compact 2.129-inch body length for tight installation spaces
• Part of the SS6405 Series - Male O-Ring to Female NPT adapter line

Compatibility

Designed as an OEM-style replacement or new-installation fitting for hydraulic, pneumatic, and industrial fluid systems requiring a 1-1/4-inch Male ORB to 1-1/4-inch Female NPTF stainless steel adapter.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified hydraulic technician. Depressurize and drain the system fully before removing or installing any fittings. Apply thread sealant compatible with 316 stainless steel on the NPTF threads; the O-Ring Boss end seals via the O-ring and does not require thread sealant. Follow applicable plumbing and piping codes, including IPC and ASME B31 standards, for the specific system type.