What Is Step Seals

Step seal is commonly known as a combined seal, which is a combination of multiple components made of rubber or polytetrafluoroethylene sealing materials. Therefore, the step seal is generally a combination of a rubber O-ring and a PTFE ring. The O-ring is a force application element, providing sufficient sealing force and compensating for the PTFE ring.

The difference between other seals and step seals:

1. Step seal is more suitable for the seal of the piston rod of hydraulic cylinder.

2. Step seal is a single-acting seal, divided into piston stepseals and rod piston step seal.

3. Step seal has the advantages of low friction, no crawling, small starting force, high pressure resistance, simple groove structure, etc.

4. The material is composed of sealing ring and O-ring (nitrile rubber or viton).