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CEL Plug M26X1,5 18L

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CEL Plug M26x1,5 18L

The CEL M26x1,5 18L plug is a hydraulic blanking plug designed for closing hydraulic line ends and other compatible connectors terminated with a nut. The product belongs to the light series L and works with connections in size 18L, equipped with a metric thread nut M26x1,5. Sealing is achieved through the clamping pressure of properly matched conical surfaces during nut tightening.

The blanking plug belongs to the TN 296 group of elements, referred to in English documentation as Blanking Plug for Tube Ends. It is used in hydraulic systems utilized in agriculture, orcharding, forestry, construction, and industry. It enables the closure of the appropriate line termination during assembly, repair, maintenance, or modernization of the hydraulic system.

Technical parameters of the CEL M26x1,5 18L plug

Product type: hydraulic plug for blanking line ends.
Product type: CEL.
Connection size: 18L.
Connection series: L – light.
Matching nut thread: M26x1,5.
Nominal thread diameter: 26 mm.
Thread pitch: 1,5 mm.
Sealing type: conical, compression during tightening.
Designation according to Ermetto: ROV 18-L.
Designation according to Rastelli-Raccordi: TS296-18L.
Designation according to Cast: 108009.1.
Designation according to Vitillo: ATME18L.1.
Catalog type: TN 296.
English name: Blanking Plug for Tube Ends.
Intended use: blanking ends of hydraulic lines and compatible connectors terminated with a nut.

Application of the CEL 18L plug in power hydraulics

The CEL M26x1,5 18L plug is used for blanking the ends of hydraulic lines equipped with a suitable coupling nut. It can be used when disconnecting lines from hydraulic system elements, replacing components, maintenance work, and closing unused line ends.

The product is used in the hydraulics of agricultural machinery, orcharding equipment, forestry equipment, construction machinery, and industrial installations. A properly selected plug enables closing a compatible line end without the need for permanent modification of its construction.

Light series L – connection size 18L

The 18L designation identifies the variant belonging to the light series L. The CEL M26x1,5 plug is designed to work with appropriately selected line ends of this series. When assembling hydraulic fittings, check the compatibility of the nut, connection size, and sealing surface geometry.

Light series L blanking plugs should not be automatically replaced with heavy series S elements. Individual designs may differ in dimensions and the construction of matching parts. Thread matching alone does not guarantee a proper seal of the connection.

Conical compression seal – principle of operation

The CEL M26x1,5 18L plug uses a seal achieved through mechanical pressure of matched conical surfaces. The blanking element is placed in the appropriate line end and then pressed using a matching nut. Tightening creates a clamping force that enables the hydraulic connection to be closed.

Proper tightness depends on the compatibility of the plug and line end geometry, the condition of the matching surfaces, and correct assembly. Scratches, dirt, and deformations of the conical surfaces can cause leaks. The CEL plug is not a universal plug intended for direct screwing into any threaded hole.

M26x1,5 thread – connection parameters

The M26x1,5 designation specifies a metric thread with a nominal diameter of 26 mm and a pitch of 1,5 mm. In the case of the CEL plug, this dimension refers to the thread of the matching nut, which is responsible for pressing the blanking plug into the line end.

When selecting, both the M26x1,5 thread and the 18L size, as well as the type of sealing surface, must be considered. Compatibility of the thread alone does not mean the plug will be suitable for every hydraulic connection.

Catalog designations Ermetto, Rastelli-Raccordi, Cast, and Vitillo

The CEL M26x1,5 18L plug can be identified based on the designations used by hydraulic fittings manufacturers. According to Ermetto, it appears as ROV 18-L, according to Rastelli-Raccordi as TS296-18L, according to Cast as 108009.1, while according to Vitillo as ATME18L.1.

Catalog designations help identify the correct variant when searching for spare parts, comparing technical documentation, and completing hydraulic connections. Before using a replacement, verify the compatibility of its construction and dimensions with the requirements of the specific line end.

Blanking plug for hydraulic line ends TN 296

The TN 296 designation refers to the type of blanking plug designed for closing tube ends. The English name Blanking Plug for Tube Ends defines its function as a plug for appropriate hydraulic line ends.

The blanking plug is pressed by the nut located at the end of the line. Therefore, it must be distinguished from plugs intended for direct screwing into threaded ports of valve bodies, valve blocks, and other hydraulic elements.

Securing lines during repair and maintenance

During service work, it may be necessary to disconnect a line from a cylinder, valve, or other component. A properly selected CEL 18L plug enables closing the line end equipped with a compatible nut. It helps limit the entry of contaminants and the outflow of oil residue during work on a depressurized system.

If the plug is to remain installed while the system is operating under pressure, the permissible parameters of the complete connection must be confirmed beforehand. The light series L designation alone does not constitute confirmation of a specific working pressure.

Selecting the CEL M26x1,5 plug for a line end

Before choosing a plug, check the line end type, the matching nut thread, and the connection series. In the case of the CEL M26x1,5 18L plug, a compatible light series L end with the appropriate nut and matched conical surfaces is required.

When replacing an existing blanking plug, the designations ROV 18-L, TS296-18L, 108009.1, and ATME18L.1 are helpful. They allow for a more accurate identification of the correct variant and reduce the risk of confusing the plug with elements of other sizes.

Installation of the CEL M26x1,5 18L plug and tightness check

Before starting assembly, turn off the device and safely depressurize the hydraulic system. Then, clean the line end, check the condition of the conical surfaces and the nut thread. The plug should be placed in the correct position and pressed using a compatible nut.

Tightening should be done in accordance with the requirements of the connection system used. Do not attempt to eliminate leaks by over-tightening damaged elements. After installation is complete, check for tightness and ensure the complete connection meets the operating conditions of the system.

Technical specification of the CEL 18L plug

Parameter	Value
Product name	CEL Plug M26x1,5 18L
Type	CEL / TN 296
Nut thread	M26x1,5
Nominal thread diameter	26 mm
Thread pitch	1,5 mm
Series	18L – light
Sealing	Conical, compression
Ermetto designation	ROV 18-L
Rastelli-Raccordi designation	TS296-18L
Cast designation	108009.1
Vitillo designation	ATME18L.1
English name	Blanking Plug for Tube Ends
Application	Blanking ends of hydraulic lines

Frequently Asked Questions (FAQ)

What is the CEL M26x1,5 18L plug used for?

The plug is used for blanking the ends of hydraulic lines and compatible connectors terminated with a nut. Sealing is achieved by pressing the appropriate conical surfaces.