PH521 is a five piece double acting compact seal which consists of one elastomeric nitrile rubber sealing element, two polyester elastomer back-up rings on both sides to prevent extrusion into the sealing gap and two special profiled guide rings produced from thermoplastic to absorb transverse forces.
  • Superior radial load bearing capacity
  • Economic sealing and guiding solution
  • Simple groove design, one-piece piston possible
  • Long service life
  • Simple snap installation

Mobile hydraulics, back-hoe loaders, fork-lift trucks, agricultural machinery, standard cylinders.

  • Diameter:
    25 mm to 300 mm
  • Temperature:
    -30 ° C to 105 ° C
  • Pressure limit:
    400 bar
  • Speed limit:
    0.5 m/s

Press the link below and download the technical specification for PH521(K518).

Material specification: PH521(K518)

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Name Material Inner Outer Height
SKU Name Material ID(∅d) OD(∅Db) GW(B) Price Availability