A Split Flange Plug is a hydraulic fitting designed to block or plug the open end of a split flange connection when a split flange adapter or split flange flangehead is not installed. It is commonly used in hydraulic systems for temporary or permanent sealing purposes.

They’re made of high-quality materials such as steel or stainless steel, which gives it high strength, durability, and resistance to corrosion and wear. It is designed to fit securely into the open end of a split flange connection, forming a tight seal to prevent fluid leakage.

Now, NJ offers flange plugs in light and heavy type, such as 4FL, 4FLH , which are ranging from 1/2” to 3”. They’re manufactured in compliance with SAE J518, and designed to withstand high-pressure systems and can handle pressure ratings of up to 6000 PSI.