Piston sealing set Prädifa series OG, Polon® | Product Series

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Inside Diameter (mm)

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Material - Seals

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Piston sealing set Prädifa series OG, Polon® Piston sealing set Prädifa series OG, Polon®

Piston sealing set Prädifa series OG, Polon®

Where to Buy

Piston sealing set for hydraulic cylinders, single-acting, PTFE slipper seal design. Low friction. For high-pressure applications. ISO 7425.

Technical Specifications

  • Thermal Application Type: High Temperature (< 205°C), Expanded Low and High Temperature (< -35 to 140°C), Standard Moderate Temperature (-35 to 100°C)
  • Media: Hydraulic
  • Polymer Material Options: Polytetrafluoroethylene (PTFE, mPTFE, TFM, Polon®), Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®), Ultra-High Molecular Weight Polyethylene (UHMW-PE)
  • Maximum Operating Pressure: 400 bar
  • Minimum Operating Temperature: -40 to -25 °C
  • Maximum Operating Temperature: 110 to 200 °C
  • Maximum Surface Speed: 4 m/sec
  • Unit of Measure: Length: mm
  • Cushioning Mechanism: No
  • Pressure Rating: High Pressure (< 500 bar)
Safety Warning

Full Product Description

The single-acting OG piston sealing set featuring a Slipper Seal® design consists of a PTFE piston sealing ring and an elastomer O-Ring as a preloading element. The asymmetrical cross-section of the sealing ring is designed for best drag oil performance during stroke in both directions. The OG sealing set is particularly suitable for single-acting pistons in control cylinders, servo controlled systems, machine tools and quick-acting cylinders. Due to the material combination of the slide ring (PTFE) and the O-ring (elastomer), this product is suitable for a wide range of applications, especially for aggressive media and/or high temperatures. Several compounds can alternatively be selected according to the specific application 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.
• High extrusion resistance.
• Adaptable to nearly all media thanks to high chemical resistance of the sealing ring and large O-Ring compound selection.
• Dimensions according to ISO ­7425-1.
• Also available as double-acting version.
• 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.

Range of application:
For high-pressure applications.
The OG sealing set is particularly suitable for single-acting pistons in control cylinders, servo controlled systems, machine tools and quick-acting cylinders.

Related Documents

Literature and Reference Materials
Hydraulic Seals--PTD3350
PTFE Seals Design Guide--PTD3354
Compound Data Sheet NBR N0674
Installation Guidelines for Piston Seals--PTD3350
Slipper Seal®--Piston sealing set OG--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 Outside Diameter (mm) Inside Diameter (mm) Element Height (mm) Groove Width Minimum Working Temperature (°C) Maximum Working Temperature (°C) Material - Seals
OG010005200271A 10 5.1 2.2 2.2 -35 110 PTFE (Polytetrafluoroethylene)
OG020005200271B 20 12.7 3.2 3.2 -35 110 PTFE (Polytetrafluoroethylene)
OG024005200271B 24 16.7 3.2 3.2 -35 110 PTFE (Polytetrafluoroethylene)
OG035005200271B 35 27.7 3.2 3.2 -35 110 PTFE (Polytetrafluoroethylene)
OG110005200271D 110 94.9 6.3 6.3 -35 110 PTFE (Polytetrafluoroethylene)
OG0110A5200271A 11 6.1 2.2 2.2 -35 110 PTFE (Polytetrafluoroethylene)
OG012005200271A 12 7.1 2.2 2.2 -35 110 PTFE (Polytetrafluoroethylene)
OG013503000271A 13.5 8.6 2.2 2.2 -35 110 PTFE (Polytetrafluoroethylene)
OG018005200271B 18 10.7 3.2 3.2 -35 110 PTFE (Polytetrafluoroethylene)
OG022003300271B 22 14.7 3.2 3.2 -35 110 PTFE (Polytetrafluoroethylene)
OG030005200271B 30 22.7 3.2 3.2 -35 110 PTFE (Polytetrafluoroethylene)
OG030005200271C 30 19.3 4.2 4.2 -35 110 PTFE (Polytetrafluoroethylene)
OG036005200271C 36 25.3 4.2 4.2 -35 110 PTFE (Polytetrafluoroethylene)
OG050005200271C 50 39.3 4.2 4.2 -35 110 PTFE (Polytetrafluoroethylene)
OG060003000271D 60 44.9 6.3 6.3 -35 110 PTFE (Polytetrafluoroethylene)
OG080005200271D 80 64.9 6.3 6.3 -35 110 PTFE (Polytetrafluoroethylene)
OG100005200271D 100 84.9 6.3 6.3 -35 110 PTFE (Polytetrafluoroethylene)
OG105005200271D 105 89.9 6.3 6.3 -35 110 PTFE (Polytetrafluoroethylene)
OG120007500271D 120 104.9 6.3 6.3 -35 110 PTFE (Polytetrafluoroethylene)
OG032008000271B 32 24.7 3.2 3.2 -35 110 TPU (Polyurethane)
OG400008300271F 400 376 8.1 8.1 -35 110 TPU (Polyurethane)
OG490008300271F 490 466 8.1 8.1 -35 110 TPU (Polyurethane)
OG540008300271F 540 516 8.1 8.1 -35 110 TPU (Polyurethane)
OG610008300271F 610 586 8.1 8.1 -35 110 TPU (Polyurethane)
OG080003300272D 80 64.9 6.3 6.3 -25 200 PTFE (Polytetrafluoroethylene)
OG743005200272F 743 719 8.1 8.1 -25 200 PTFE (Polytetrafluoroethylene)
OG025005200271B 25 17.7 3.2 3.2 -35 110 Polytetrafluoroethylene (PTFE, mPTFE, TFM)
OG055005200271C 55 44.3 4.2 4.2 -35 110 Polytetrafluoroethylene (PTFE, mPTFE, TFM)
OG125005200271D 125 109.9 6.3 6.3 -35 110 Polytetrafluoroethylene (PTFE, mPTFE, TFM)
OG100005200272D 100 84.9 6.3 6.3 -25 200 PTFE (Polytetrafluoroethylene)
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