ORFS blanking plugs

Internal thread plug designed for blanking external threads. 

The category includes plugs with internal ORFS thread. Plug for external threads - this type of plug allows blanking fittings with external threads or hose tails with external threads ( K21 / AORFS hose tails ). The plug inside the nut has a flat surface , which achieves an ideal connection with the flat face and O-ring used in ORFS fittings. ORFS threads are most commonly found in Western construction equipment ( koparki CAT, JCB ) and new agricultural equipment ( JOHN DEERE ). Execution : zinc-plated free-cutting steel. Alternative designation : RK2050 plug

ORFS plugs for hydraulic connectors

ORFS plugs are used for closing and protecting connections made in the ORFS standard used in power hydraulics. They allow blanking an unused port, hose end, or connection point during construction, modernization, and maintenance of hydraulic installations.

The ORFS standard, or O-Ring Face Seal, utilizes a face seal with an O-ring. For this reason, when selecting a plug, attention should be paid not only to the thread size but also to the element's compatibility with the ORFS connection geometry.

What are ORFS plugs used for?

ORFS plugs are used to close free connections in hydraulic systems. They can be used as both permanent and temporary elements, for example, during maintenance work, system reconstruction, or protecting an unused section of the installation.

A properly selected plug helps protect an open connection from dirt and reduces the risk of contaminants entering the hydraulic system.

ORFS - O-Ring Face Seal

ORFS connections utilize a flat face surface and sealing via an O-ring. As a result, the method of achieving tightness differs from solutions used in JIC, BSP, or NPT, among others.

A plug should not be selected solely based on a similar thread diameter. Proper fit is determined by the entire connection standard, including the geometry of the sealing surface.

Where are ORFS plugs used?

• in power hydraulic systems,
• in mobile hydraulics,
• in agricultural and construction machinery,
• in industrial equipment,
• during system repairs and modernizations,
• to close unused ORFS connections.

How to choose the right ORFS plug?

Before purchasing, the connection standard and its size must be correctly identified. In the case of ORFS, it is important to check the thread and the face surface mating with the seal.

• confirm the ORFS connection standard,
• check the thread size,
• verify the sealing surface,
• choose the plug for the correct connection variant,
• check the technical parameters of the specific product,
• evaluate the condition of the mating surfaces before installation.

ORFS plugs vs JIC, BSP, and NPT

ORFS, JIC, BSP, and NPT are different hydraulic connection standards. JIC uses a 37° cone, ORFS uses an O-ring face seal, while BSP and NPT have different thread geometries and connection methods. For this reason, plugs from different systems should not be used interchangeably.

If you need other variants, also check hydraulic plugs and caps and other hydraulic fittings available at HYDRON.

FAQ - ORFS plugs

What is an ORFS plug used for?

It is used to close and protect the corresponding ORFS connection in a hydraulic installation.

How is an ORFS connection sealed?

ORFS utilizes a face seal with an O-ring placed on a properly prepared connection surface.

Can an ORFS plug be used for a JIC connection?

No. JIC and ORFS use different sealing surfaces and are distinct connection standards.

How to choose the ORFS plug size?

Identify the connection standard and size, and then select the corresponding ORFS plug variant.