Description & Advantages

The NS-20 ZSDA seal for cylinders with radial drillings is a piston seal which can dynamically operate over drillings in the cylinder bore up to 3 mm diameter. It can also be used as a high pressure seal on cylinders with-out radial drillings up to 2000 bar. The ZSDA seal consists of 5 parts. Two L-shaped metallic support rings and an intermediate metallic thrust ring support a slide ring of PTFE compound with narrow sealing lips on its outer diameter. An O-ring acts as energiser to provide a sealing function even at zero pressure.

Technical Data

Operating Conditions

Pressure                 :  450 bar

Temperature         :  -35°C ~ + 100°C

Sliding Speed        :  ≤ 1.0 m/S

Material

Material                 :  NBR + PTFE-Bronze/ Carbon / MoS2/ Graphite+ METAL +POM

O - Ring                 :  NBR/FKM (FKM O-Ring should be used when temperature is over 100 °C)