K757

The K757 dual-acting piston seal consists of one PTFE ring, one elastomer X-ring and two activated O-rings. The K757 is the superior version of the K753 and features a dual O-ring design that increases sealing performance by improving preload. Similar to the K753, the K757 is an ideal piston seal for systems that have two different media in the system separated by a piston seal such as liquid and gas.

Advantages
• Able to operate in variable media types, liquid-liquid or liquid-gas systems
• Low friction
• Low gas permeability
• High resistance to a variety of chemicals and high temperatures using various elastomers
• Design provides good sealing performance at variable pressures
• Free of sticking and slipping
• Long service life
• High frequency resistance