PSP Profile, Double-Acting Hydraulic Piston Seal | Product Series

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PSP Profile, Double-Acting Hydraulic Piston Seal

PSP Profile, Double-Acting Hydraulic Piston Seal

Where to Buy

Polyurethane piston seal for light- to medium duty, bi-directional hydraulic applications

Technical Specifications

  • Bore Diameter: 0.625 to 8.000 inch
  • Gland Depth: 0.121 to 0.237 inch
  • Maximum Operating Pressure: up to 5000 psi
  • Minimum Operating Temperature: -35 °F
  • Maximum Operating Temperature: 275 °F
  • Elastomer: Nitrile (NBR)
  • For Fluid Type: Hydraulic Oil (petroleum based), Water (depending on material)
  • Durometer: 70 Shore A (energizer ring), 90 Shore A (cap ring), 60 Shore D (cap ring)
  • Color: Tan, Yellow, Aqua
  • Thermal Application Type: Varies (depending on material)
  • Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
  • Media: Hydraulic
  • Unit of Measure: Length: inch
  • Maximum Surface Speed: 100 ft/min, 0.5 m/sec
  • O-Ring Dash Number: Various
Safety Warning

Full Product Description

AVAILABILITY
A sampling of Parker’s part numbers are shown in the configurator above for select materials and sizes.   If the material and dimensions required are not shown, assistance with part number configuration may be found in the literature documents in the Product Support tab.  To check current tooling, review the Part Number Look-up document in the Product Support tab.  Contact Parker for requirements outside typical ranges.

PERFORMANCE ADVANTAGES
Parker’s PSP Profile is a squeeze type, polyurethane cap style piston seal for use in light to medium duty, bi-directional hydraulic applications. Available from proprietary Parker polyurethanes, the PSP offers low friction, abrasion and extrusion resistance. The lathe-cut nitrile elastomer energizer ensures resistance to compression set to increase seal life. The PSP profile’s geometry provides a fluid reservoir between the two sealing lips which holds system fluid, resulting in reduced breakaway and running friction.

The PSP Profile’s geometry provides a fluid reservoir between the two sealing lips which holds system fluid, resulting in reduced breakaway and running friction. Additional features of the PSP Profile include:
• Designed to retrofit grooves for a single o-ring or an o-ring with two back-ups (wide)
• Easy to install
• Resists rolling and twisting in long stroke applications.

Available in polyurethanes, including Parker’s proprietary Resilon®, the PSP Profile provides
• Long life
• Extrusion resistance
• Low compression set

Standard Materials:
• P4622A90 Ultrathane® polyurethane; Temp -65 / +225F; Pressure* 5000 psi; Surface speed

Related Documents

Training
Basic Sealing Technology-Linear Sealing
Compliance, Certifications & Safety
EPS Division, SLC, IATF 16949:2016
EPS Division, SLC, ISO 9001:2015 and AS9100D in Accordance With AS9104/1
Selector Guides
Piston Seal Decision Tree
Contact & Support Information
Design Action Request--DAR
Frequently Asked Questions
Literature and Reference Materials
Fluid Power Seal Design Guide--EPS 5370
Installation Techniques for Linear Fluid Power Seals
Installation Techniques for Linear Fluid Power Seals
PSP Profile Piston Seal
Resilon® Polyurethane --Landing Page
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Products Groove Diameter Groove Width Seal Material
4301PSP433AT 5.526 0.538 P4301A90
4622PSP433A 5.526 0.375 P4622A90
4622PSP435N 5.776 0.375 P4622A90
4300PSP437A 6.026 0.375 P4300A90
4622PSP437N 6.026 0.375 P4622A90
4300PSP439AT 6.526 0.538 P4300A90
4622PSP439N 6.526 0.375 P4622A90
4300PSP443A 7.526 0.375 P4300A90
4300PSP204A 0.383 0.187 P4300A90
4300PSP206A 0.508 0.187 P4300A90
4622PSP206N 0.508 0.187 P4622A90
4622PSP208N 0.633 0.187 P4622A90
4300PSP210A 0.758 0.187 P4300A90
4622PSP210A 0.758 0.187 P4622A90
4622PSP212A 0.883 0.187 P4622A90
4300PSP214A 1.008 0.187 P4300A90
4301PSP214A 1.008 0.187 P4301A90
4622PSP214A 1.008 0.187 P4622A90
4622PSP216A 1.133 0.187 P4622A90
4300PSP218A 1.258 0.187 P4300A90
4300PSP218AT 1.258 0.275 P4300A90
4622PSP218A 1.258 0.187 P4622A90
4622PSP220A 1.383 0.187 P4622A90
4300PSP324A 1.380 0.281 P4300A90
4300PSP222A 1.508 0.187 P4300A90
4301PSP222A 1.508 0.187 P4301A90
4622PSP222A 1.508 0.187 P4622A90
4622PSP325N 1.505 0.281 P4622A90
4300PSP223A 1.633 0.187 P4300A90
4300PSP326A 1.630 0.281 P4300A90
4300PSP326AT 1.630 0.410 P4300A90
4301PSP326A 1.630 0.281 P4301A90
4622PSP326A 1.630 0.281 P4622A90
4300PSP327A 1.755 0.281 P4300A90
4622PSP327N 1.755 0.281 P4622A90
4300PSP328A 1.880 0.281 P4300A90
4622PSP328N 1.880 0.281 P4622A90
4622PSP329A 2.005 0.281 P4622A90
4300PSP330A 2.130 0.281 P4300A90
4300PSP330AT 2.130 0.410 P4300A90
4301PSP330A 2.130 0.281 P4301A90
4622PSP330A 2.130 0.281 P4622A90
4300PSP331A 2.255 0.281 P4300A90
4622PSP331N 2.255 0.281 P4622A90
4300PSP332A 2.380 0.281 P4300A90
4622PSP332A 2.380 0.281 P4622A90
4622PSP333N 2.505 0.281 P4622A90
4300PSP334A 2.630 0.281 P4300A90
4300PSP334AT 2.630 0.410 P4300A90
4301PSP334A 2.630 0.281 P4301A90
4622PSP334A 2.630 0.281 P4622A90
4300PSP335A 2.755 0.281 P4300A90
4622PSP335N 2.755 0.281 P4622A90
4300PSP336A 2.880 0.281 P4300A90
4301PSP336A 2.880 0.281 P4301A90
4622PSP336A 2.880 0.281 P4622A90
4622PSP337N 3.005 0.281 P4622A90
4300PSP338A 3.130 0.281 P4300A90
4300PSP338AT 3.130 0.410 P4300A90
4622PSP338A 3.130 0.281 P4622A90
4622PSP339A 3.255 0.281 P4622A90
4622PSP340A 3.380 0.281 P4622A90
4300PSP342A 3.630 0.281 P4300A90
4300PSP342AT 3.630 0.410 P4300A90
4622PSP342A 3.630 0.281 P4622A90
4622PSP344N 3.880 0.281 P4622A90
4622PSP345N 4.005 0.281 P4622A90
4300PSP346AT 4.130 0.410 P4300A90
4622PSP346A 4.130 0.281 P4622A90
4622PSP348N 4.380 0.281 P4622A90
4300PSP425AT 4.526 0.538 P4300A90
4301PSP425AT 4.526 0.538 P4301A90
4622PSP425N 4.526 0.375 P4622A90
4622PSP350A 4.630 0.281 P4622A90
4622PSP427N 4.776 0.375 P4622A90
4622PSP429A 5.026 0.375 P4622A90
4300PSP433AT 5.526 0.538 P4300A90
4300PSP210K 3/4 .162 P4300A90
4300PSP336B 2-7/8 .256 P4300A90
4300PSP340A 3-3/8 .256 P4300A90
4301PSP218A 1-1/4 .162 P4301A90
4301PSP342A 3-5/8 .281 P4301A90
4304PSP210A 3/4 .162 P4304D60
4304PSP443B 7-1/2 .375 P4304D60
4311PSP330A 2-1/8 .256 P4311A90
4622PSP206H 1/2 .187 P4622A90
4622PSP338Y 3-1/8 .281 P4622A90
4622PSP339A-PROTO 3-1/4 .355 P4622A90
4622PSP425Y 4-1/2 .375 P4622A90
4651PSP433A 5-1/2 .375 Z4651D60
4651PSP439A 6-1/2 .375 Z4651D60
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