Midland Industries 591200C Dot Push-to-connect Plug 3/4 in

Product Description

The MIDLAND INDUSTRIES 591200C is a D.O.T.-rated push-to-connect plug designed for use in compressed air and pneumatic brake line systems where quick, reliable port sealing is required. The plug features a 3/4-inch plug-in stem and a composite plastic body built to meet Department of Transportation specifications. It is used to cap or seal open ports in push-to-connect fittings without tools, making it a practical component for fleet maintenance, trailer air systems, and related pneumatic plumbing work. Technicians handling air brake or pneumatic line repairs will find this plug straightforward to install and remove.

This plug is suited for commercial vehicle air systems, trailer pneumatic circuits, and shop air plumbing where a D.O.T.-compliant push-to-connect termination is required. The composite plastic body keeps weight low while maintaining the pressure and vibration resistance needed in mobile or stationary compressed air applications. It is appropriate for use in both shop environments and field service scenarios where quick port closure is needed.

Key Features

• D.O.T.-rated construction meets Department of Transportation requirements for air brake and pneumatic systems
• 3/4-inch plug-in stem fits standard push-to-connect port openings in that size range
• Composite plastic body resists corrosion and keeps component weight minimal
• Tool-free push-to-connect installation and removal speeds service time
• Compact profile at approximately 2.15 inches in length and 0.9 inches in height

Compatibility

Designed as an OEM-style replacement or service plug for D.O.T. composite body push-to-connect pneumatic fittings with a 3/4-inch plug-in stem connection.

Installation Notes

Installation is performed by qualified technicians servicing pneumatic or air brake systems. Before servicing any air line fitting, depressurize the system completely and verify zero line pressure. Push the stem firmly into the receiving port until it seats and the retaining collar engages. Follow all applicable D.O.T. and FMCSA regulations when servicing air brake system components on commercial vehicles.