Rotary seal Prädifa series OR, Polon® | Product Series

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Outside Diameter (mm)

Element Height (mm)

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Minimum Working Temperature (C)

Maximum Working Temperature (C)

Seal Material

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Rotary seal Prädifa series OR, Polon® Rotary seal Prädifa series OR, Polon®

Rotary seal Prädifa series OR, Polon®

Where to Buy

Rotary seal for rotary distributors. Dynamic function on inner diameter. Double-acting, PTFE slipper seal design. Low friction. For high-pressure applications. ISO 7425. Slipper Seal®.

Technical Specifications

  • Media: Hydraulic
  • Polymer Material Options: Polytetrafluoroethylene (PTFE, mPTFE, TFM, Polon®), Ultra-High Molecular Weight Polyethylene (UHMW-PE), Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
  • Maximum Operating Pressure: 300 bar
  • Minimum Operating Temperature: -260 to -25 °C
  • Maximum Operating Temperature: 80 to 300 °C
  • Maximum Surface Speed: 0.5 m/sec, 1.0 m/sec
  • Unit of Measure: Length: mm
  • Cushioning Mechanism: No
  • Thermal Application Type: Extremely High Temperature (> 205°C), Standard Moderate Temperature (-35 to 100°C), Expanded Low and High Temperature (< -35 to 140°C)
  • Pressure Rating: High Pressure (< 500 bar)
Safety Warning

Full Product Description

The internally sealing OR sealing set featuring a Slipper Seal® design consists of a PTFE rotor sealing ring and an elastomer O-ring as a pre-loading element.
It is particularly suitable for alternating sealing of rotary transmissions for slewing rings, swivel drives, hose reels, and in machine tool hydraulics. If the sealing set is used as an end seal, it is recommended to install a double wiper ring at the end of the components. Due to the special operating conditions of rotary transmissions, the OR rotor sealing sets are provided with one or two circumferential lubrication grooves.
Due to the material combination of the slide ring (PTFE) and O-ring (elastomer), this product is suitable for a wide range of applications, especially for aggressive media and/or high temperatures. Alternatively, several compounds can be selected, depending on the specific applications profile.

• Good sealing performance in extremely small assembly conditions.
• Excellent wear resistance.
• Minimal break-away and dynamic friction and no stick-slip tendency ensures uniform motion even at low speeds.
• Good energy efficiency due to low friction.
• Insensitive to pressure peaks.
• High temperature resistance assured by suitable O-Ring compound selection.
• Improved lubrication due to pressure medium deposit in the dynamic contact area.
• High extrusion resistance.
• Adaptable to nearly all media thanks to high chemical resistance of the sealing ring and large O-Ring compound selection.
• Short axial assembly length.
• Installation in closed and undercut housings.
• Available in diameters from 4 to 3000 mm.
• Further dimensions of machined series with short lead times available.

Related Documents

Literature and Reference Materials
Hydraulic Seals--PTD3350
Rotary Shaft Seals From Parker--Landing Page
Compound Data Sheet NBR N0674
Installation Guidelines for Rotary Seals--PTD3350
Slipper Seal®--Rotary sealing set OR--PTD3350
Storage and Cleaning of Elastomer Seals--PTD3032
Product Demos & Tutorials
How to Properly Store and Clean Elastomer Seals
Mixing the right ingredients: Material Development at Parker-Prädifa
Parker Final Exam in Physics / Sealing Systems Put to the Test
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Products Inside Diameter (mm) Outside Diameter (mm) Element Height (mm) Groove Width Minimum Working Temperature (C) Maximum Working Temperature (C) Seal Material
OR120003300161D 120 135.5 6.3 6.3 -30 100 033
OR125003300161D 125 140.5 6.3 6.3 -30 100 033
OR125003300162D 125 140.5 6.3 6.3 -25 200 033
OR130003300161D 130 145.5 6.3 6.3 -30 100 033
OR140003300161D 140 155.5 6.3 6.3 -30 100 033
OR160003300161D 160 175.5 6.3 6.3 -30 100 033
OR170003300163C 170 181 4.2 4.2 -50 110 033
OR180007400161C 180 191 4.2 4.2 -30 100 074
OR180031400161D 180 195.5 6.3 6.3 -30 80 006
OR190003300161D 190 205.5 6.3 6.3 -30 100 033
OR210031400161E 210 231 8.1 8.1 -30 80 006
OR250003300161E 250 271 8.1 8.1 -30 100 033
OR280003300161F 280 304.5 8.1 8.1 -30 100 033
OR300003300161F 300 324.5 8.1 8.1 -30 100 033
OR004003300161A 4 8.9 2.2 2.2 -30 100 033
OR006003300161A 6 10.9 2.2 2.2 -30 100 033
OR010003300161B 10 17.5 3.2 3.2 -30 100 033
OR014103300161B 14.1 21.6 3.2 3.2 -30 100 033
OR025003300161C 25 36 4.2 4.2 -30 100 033
OR025003300162C 25 36 4.2 4.2 -25 200 033
OR030003300162C 30 41 4.2 4.2 -25 200 033
OR040003300161B 40 47.5 3.2 3.2 -30 100 033
OR045003300162C 45 56 4.2 4.2 -25 200 033
OR050003300161D 50 65.5 6.3 6.3 -30 100 033
OR075003300161D 75 90.5 6.3 6.3 -30 100 033
OR080003300161D 80 95.5 6.3 6.3 -30 100 033
OR085003300161D 85 100.5 6.3 6.3 -30 100 033
OR090003300161D 90 105.5 6.3 6.3 -30 100 033
OR095003300161D 95 110.5 6.3 6.3 -30 100 033
OR100003300161D 100 115.5 6.3 6.3 -30 100 033
OR012003300161A 12 16.9 2.2 2.2 -30 100 033
OR032003300161B 32 39.5 3.2 3.2 -30 100 033
OR100003300161C 100 111 4.2 4.2 -30 100 033
OR226003300161D 226 241.5 6.3 6.3 -30 100 033
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