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COMPANY NEWS

2025-08-28

Unidirectional seal compensator, bidirectional seal compensator

Unidirectional seal compensator, bidirectional seal compensator, unidirectional stuffing box compensator, bidirectional stuffing box compensator



The inner sleeve of the one-way seal compensator is connected to the pipeline.

Adopting the principle and structure of high-performance self-pressurizing dynamic seals

It can freely slide within the casing along with the expansion and contraction of the pipe.

It can adapt to the sealing requirements of any pipeline.

The outer shell and the inner sleeve are sealed with a new type of synthetic material

It can withstand high temperatures, is anti-corrosive and anti-aging, 

and is suitable for temperatures ranging from -40 to 150 degrees Celsius. In special circumstances, it can reach up to 350 degrees.

It can not only ensure axial sliding but also prevent the leakage of the medium inside the pipe.


The one-way seal compensator is designed with an anti-pull device, which can ensure that it will not be pulled apart when it expands to the limit position.

This greatly enhances the safety of the entire pipeline network operation.."


The one-way seal compensator is suitable for medium engineering pressure ≤2.5MPa and medium temperature ranging from -40℃ to 600℃.


The unidirectional seal compensator adopts a new type of sealing material, flexible graphite ring.

It features high strength and a low coefficient of friction (0.04 to 0.10).

It features no aging, good effect and convenient maintenance.


The service life of the one-way seal compensator is long, and its fatigue life is comparable to that of the pipeline.

The sliding surface has been specially treated and has good corrosion resistance in environments such as salt water and salt solutions.

It is more than 50 times higher than austenitic stainless steel.

Meanwhile, when the sealing effect weakens due to wear and tear after many years,

The flange can be tightened again to enhance the sealing performance, or the bolts can be loosened.

Remove the pressure ring, then install one or two layers of sealing rings, press the pressure ring tightly, and continue to use it.


The one-way seal compensator has no requirement for the content of chloride ions.

It is particularly suitable for systems where the medium or surrounding environment has excessive chloride ions.