Tru-Seal Pipe Thread Sealing Nut

The Miller Tru-Seal is the original sealing locknut for threaded pipe connections. 

Tru-Seal can be found throughout the world preventing leaks and saving money. 

On pipe sizes up to 3", the Tru-Seal is available in pipe thread or straight thread in yellow zinc dichromate finished steel or stainless steel.

Here are a few typical Tru-Seal Applications: 

Hydraulic Valves 

Use Tru-Seals to prevent leaks in hydraulic systems. 

Shown here at a valve port, the Tru-Seal is effective up to 10,000 psi on 1/8" thru 1/2" pipe sizes, 5000 psi on 3/4" thru 11/4" pipe sizes, and 3000 psi on 11/2" and larger pipe sizes. 

The PTFE insert, impervious to virtually all fluids, recedes into the port to achieve the leakproof seal. 

Fuel Pump 

The Tru-Seal can be used to seal flammable liquids. 

At any threaded connections, the Tru-Seals will seal under severe corrosion, vibration and pressure conditions, as well as temperatures from -100° F to 500° F. 

Miller Tru-Seals save time in assembly and disassembly of piping. 

Position the component and use the Tru-Seal to tighten down the connection illustrated in diagram below). 

PTFE tape and pipe dope can shred or crumble and contaminate a system - the Tru-Seal is especially useful in these operations. 

Tru-Seals are found in many gas, water, steam vacuum and chemical piping systems today, as well as fluid power. 

Cylinder Ports 

A natural fit in every cylinder operation, the Tru-Seal is great insurance against costly leaks when mounting valves, switches, or piping. 

The Tru-Seal’s rounded corner design reduces the danger of over torquing these components.