Hydraulic rod applications face relentless challenges: high-pressure spikes, side loads, abrasive contaminants, and temperature extremes. Traditional elastomeric seals often crack, extrude, or leak under these conditions—causing downtime and fluid loss. SPNS type hydraulic seals, are also call rod buffer step seals, static seals installed in glands or housings to prevent the leakage of fluid from within a cylinder to the outside as the rod cycles.

SPNS seals can be applied to various applications, especially those occasions where polyurethane seals are not suitable for applications, such as oil in water or emulsion media.

Advantages:

1.Chemical resistance

2. Heat resistance

3. Low friction

4. Has good oil return property

5. Easy installation

6. Longevity

7. High pressure resistance

Application Range:

The SPNS rod seal is extensively used in control cylinders, servo systems, machine tool cylinders, rapid-response cylinders, and construction machinery.

Installation Instructions:

Typically, the seal can be easily installed into closed grooves by compressing it into a kidney shape. If installation tools are required, they must be made of soft material and free of sharp edges. Before installation, compatible lubricant must be applied to the seal.