Compare Piston rod shaft seal with DSH piston seal ring
 Sep 23, 2020|View:300

The oil cylinder in hydraulic mechanical equipment is composed of a cylinder block, piston, piston rod, cylinder head, and sealing ring. However, the piston seal is the sealing principle between the cylinder block and the piston. If the sealing is not good, the performance of the oil cylinder will be affected. The sealing groove is opened on the piston. The piston rod shaft seal ring refers to the seal between the piston rod and the cylinder head. If the sealing is not good, the oil leakage will occur, and the sealing groove is opened on the hole.

The sealing groove opened on the shaft should be hole sealing, that is to say, it is a piston seal. Therefore, a dual-purpose sealing ring with a DSH hole and shaft should be used. If the sealing groove is opened on the hole, it should be the function of the sealing rod, that is to say, piston rod shaft seal. Therefore, a shaft seal should be used.

Piston rod shaft seal ring

A typical compressor stuffing box is composed of a series of sealing rings. Each ring is used to prevent or restrict the airflow into the atmosphere or isolation chamber. Each set of sealing rings is installed in a separate packing box. Each sealing ring is clamped on the piston rod to achieve the sealing effect. In addition to the stuffing box which seals the cylinder, there are oil scraper rings on the piston rod, which can prevent oil

escape from crankcase along piston rod.

Piston rod shaft seal

DSH piston seal ring

The piston sealing ring is installed on the piston to prevent gas leakage inside the cylinder. Compared with the one side of the cylinder, the function of the double-ring seal is to prevent the gas leakage in the cylinder.

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