ZP piston seal

The ZP type piston combined seal is a commonly used sealing component, usually composed of an integral rubber-fabric-reinforced sealing component and two anti-extrusion retaining rings. Its sliding surface is specially reinforced with fabric, which can ensure the necessary lubricating oil film between the sealing component and the cylinder barrel even under long-term high-pressure static conditions, thereby reducing starting friction and friction force, and reducing the wear of the dynamic surface of the sealing component.

The main characteristics and application scope of this sealing component are as follows:

Characteristics: The standard material of the sealing component is usually NBR rubber, and its dynamic surface is reinforced with aramid fibers; the material of the retaining ring is generally polyacetal resin.

Application scope: It is mainly used in double-acting cylinders of hydraulic supports and tunnel equipment, and engineering machinery boom cylinders, etc.

Its working pressure and working temperature range vary depending on the specific medium used. For example, when using mineral oil, the working temperature is -20 to +100°C; when using HFA, HFB, and HFC media, the working temperature is +5 to +60°C, and the working pressure is generally ≤ 500 bar (depending on the product model), and the surface speed is ≤ 0.1 m/s.

The following are some common order numbers and size specifications examples of ZP type piston combined seals (in actual situations, products from different manufacturers may vary).

During installation and use, it is necessary to pay attention to operating in accordance with product requirements to ensure the sealing effect and service life. At the same time, it is necessary to select the appropriate sealing component model and material according to the actual working conditions to meet the performance requirements of the equipment.