Piston seal Prädifa series B8, Ultrathan® | Product Series

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Material - Seals

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Piston seal Prädifa series B8, Ultrathan® Piston seal Prädifa series B8, Ultrathan®

Piston seal Prädifa series B8, Ultrathan®

Piston seal for hydraulic cylinders, single-acting, polyurethane u-cup design with additional back-up ring. For high-pressure applications. Insensitive to extreme pressure peaks.Robust seal profile for harshest operating conditions. ISO 5597, ISO 6020.

Technical Specifications

  • Media: Hydraulic
  • Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®), Nitrile Butadiene Rubber (NBR, XNBR)
  • Maximum Operating Pressure: 500 bar, 400 bar
  • Minimum Operating Temperature: -35 to -20 °C
  • Maximum Operating Temperature: 100 to 110 °C
  • Maximum Surface Speed: 0.5 m/sec
  • Unit of Measure: Length: mm
  • Cushioning Mechanism: No
  • Thermal Application Type: Standard Moderate Temperature (-35 to 100°C)
  • Pressure Rating: Extremely High Pressure (< 800 bar), High Pressure (< 500 bar)
Safety Warning

Full Product Description

The B8 Ultrathan® piston seal is a lip seal with interference fit. It is extremely wear resistant, resistant to pressure peaks and ensures reliable load holding. It is suitable for hydraulic high-pressure applications.

• Robust seal profile for harshest operating conditions.
• Extreme wear resistance.
• Assembly on one-part piston is possible.
• Insensitive to extreme pressure peaks.
• Extremely high extrusion resistance.
• Excellent media resistance in case of suitable compound selection.
• Suitable compounds available for special requirements of the food processing industry.
• Suitable compounds available for special requirements of the chemical process industry.
• Dimensions according to ISO 5597.
• Installation in closed and undercut housings.
• Additional sizes of machined products available on short notice.

Range of application:
Mainly for sealing pistons in heavy-duty applications in mobile and stationary hydraulics.

Related Documents

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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
B8001800603 18 10 5.7 6.3 -35 100 P5008
B8002400603 24 16 5.7 6.3 -35 100 P5008
B8002800603 28 20 7 8 -35 100 P5008
B8004000603 40 32 5.7 6.3 -35 100 P5008
B8005000603 50 40 7,3 8 -35 100 P5008
B8006000603 60 50 7,3 8 -35 100 P5008
B8006100603 60 50 7,3 8 -35 100 P5008
B8007500603 75 63 8,7 9.5 -35 100 P5008
B8009500603 95 80 9,4 10.4 -35 100 P5008

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