The Parker Prädifa rod sealing set profile ZJ is a compact seal for hydraulic props and cylinders. The sealing ring consists of a rubber part with the fabric-reinforced dynamic surface, which provides low breakaway and low dynamic friction, even after long standstill periods, combined with a remarkable reduction of the wear. To prevent extrusion the sealing ring is equipped with a back-up ring.

Field of application:

Working pressure: ≤500

Working temperature: HFA-, HFB, and HFC-fluids: +5 to 60 ºC Mineral oil: —20 to +100 ºC

Surface speed: ≤ 0,1 m/s
Single-acting seal for piston rods.

Installation:

The design of the Parker Praedifa rod sealing set profile ZJ allows simple snap-in installation into closed housings.
To avoid damaging care should be taken that the seals are not pulled over sharp edges during installation. When used in mineral oil a helical groove should be
provided in the guiding part to avoid the build-up of drag pressure.

Compounds:

The standard compound for the sealing part is an NBR-based elastomer (Z5016) with a fabric-reinforced dynamic surface. The back-up rings are made of a polyacetal-based (W5001) material. For special requirements (pressure, temperature, speed, application in water, HFA-, HFB-fluids, etc.) please contact our Consultancy Service, so that suitable materials and/or designs can be recommended.