Rod seal Prädifa series BD, Ultrathan® | Product Series

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Rod seal Prädifa series BD, Ultrathan® Rod seal Prädifa series BD, Ultrathan®

Rod seal Prädifa series BD, Ultrathan®

Where to Buy

Rod seal for hydraulic cylinders, single-acting. Compact seal design with anti-extrusion ring. Enhanced sealing performance in non-pressurized conditions. For high pressures and extreme pressure peaks. Robust design with extreme wear resistance. ISO 5597

Technical Specifications

  • Thermal Application Type: Standard Moderate Temperature (-35 to 100°C), Low Temperature (< -35 C)
  • Media: Hydraulic
  • Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
  • Maximum Operating Pressure: 500 bar
  • Minimum Operating Temperature: -45 to -20 °C
  • Maximum Operating Temperature: 95 to 105 °C
  • Maximum Surface Speed: 0.5 m/sec
  • Unit of Measure: Length: mm
  • Cushioning Mechanism: No
  • Pressure Rating: Extremely High Pressure (> 500 bar)
Safety Warning

Full Product Description

The BD Ultrathan® rod seal is a compact seal with a secondary sealing lip and an evolution of Parker’s Park-O-Pak® seal. The additional sealing edge results in a larger lubricant deposit in the sealing gap. This largely prevents increased wear and achieves longer service life. In addition, the need for a complex tandem arrangement may be eliminated by the second sealing lip in some cases.
Hydraulic cylinders in earth-moving machines are typical applications for this seal. They may involve pressure peaks of up to 1000 bar.

• Exceptionally high static and dynamic sealing performance.
• Enhanced sealing performance in non-pressurized conditions.
• Penetration of air into the system is largely prevented.
• Robust seal profile for harshest operating conditions.
• Extreme wear resistance.
• Easier installation.
• Insensitive to extreme pressure peaks.
• Improved lubrication due to pressure medium deposit in the dynamic contact area.
• Extremely high extrusion resistance.
• Excellent media resistance in case of suitable compound selection.
• Suitable compounds available for special requirements of the chemical process industry.
• Suitable compounds available for special requirements of the food processing industry.
• Dimensions according to ISO 5597.
• Installation in closed and undercut housings.
• Low compression set.
• Further dimensions of machined series with short lead times available.

Range of application:
Mainly for sealing piston rods and plungers in heavy-duty mobile and stationary hydraulic applications.

The BD rod seal is available in the following compounds:
00042 - Heavy-duty
00043 - Low temperatures
00570 - Bio-degradable fluids

Related Documents

Literature and Reference Materials
Hydraulic Seals--PTD3350
Compound Data Sheet TPU P5008
Installation Guidelines for Rod Seals--PTD3350
Storage and Cleaning of Elastomer Seals--PTD3032
Ultrathan®--Rod seal BD--PTD3350
Product Demos & Tutorials
How to Properly Store and Clean Elastomer Seals
Mixing the right ingredients: Material Development at Parker-Prädifa
Communities, Blogs & Industry Links
Industry Hydraulics
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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
BD004000042 40 55 11.4 12.5 -35 100 P5008
BD005000042 50 65 11.4 12.5 -35 100 P5008
BD005000570 50 65 11.4 12.5 -20 100 P5000
BD005600042 56 71 11.4 12.5 -35 100 P5008
BD006000042 60 75 11.4 12.5 -35 100 P5008
BD006300042 63 78 11.4 12.5 -35 100 P5008
BD006500042 65 80 11.4 12.5 -35 100 P5008
BD007000042 70 85 11.4 12.5 -35 100 P5008
BD007500042 75 90 11.4 12.5 -35 100 P5008
BD008000042 80 95 11.4 12.5 -35 100 P5008
BD008500042 85 100 11.4 12.5 -35 100 P5008
BD008600042 85 100 12 13 -35 100 P5008
BD009000042 90 105 11.4 12.5 -35 100 P5008
BD009200042 95 110 12 13 -35 100 P5008
BD009500042 100 115 12 13 -35 100 P5008
BD009800043 125 145 14.5 16 -35 100 P5009
BD009900042 100 120 13.5 15 -35 100 P5008
BD010000042 100 120 14.5 16 -35 100 P5008
BD011000042 110 130 14.5 16 -35 100 P5008
BD011100570 110 130 14.5 16 -20 100 P5000
BD012000042 120 140 14.5 16 -35 100 P5008
BD012500042 125 145 14.5 16 -35 100 P5008
BD013000042 130 150 14.5 16 -35 100 P5008
BD013100570 130 150 14.5 16 -20 100 P5000
BD014000042 140 160 14.5 16 -35 100 P5008
BD014000043 140 160 14.5 16 -45 95 P5009
BD015000042 150 170 14.5 16 -35 100 P5008
BD016000042 160 180 14.5 16 -35 100 P5008
BD017000042 170 190 14.5 16 -35 100 P5008
BD018000042 180 205 18.2 20 -35 100 P5008
BD018100570 180 205 18.2 20 -20 100 P5000
BD019000042 190 215 18.2 20 -35 100 P5008
BD019000570 190 215 18.2 20 -20 100 P5000
BD020000042 200 230 22.7 25 -35 100 P5008
BD022000042 220 250 22.7 25 -35 100 P5008
BD023000042 230 260 22.7 25 -35 100 P5008
BD023000570 230 260 22.7 25 -20 100 P5000
BD024000042 240 270 22.7 25 -35 100 P5008
BD024100570 240 270 22.7 25 -20 100 P5000
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