Rod seal Prädifa series B4 | Product Series

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Rod seal Prädifa series B4

Rod seal Prädifa series B4

Rod seal for hydraulic cylinders, single-acting, polyurethane u-cup design with anti-extrusion ring. For high-pressure applications and extreme pressure peaks. Robust seal profile for harshest operating conditions. ISO 5597, ISO 6020.

Technical Specifications

  • Thermal Application Type: Standard Moderate Temperature (-35 to 100°C), Low Temperature (< -35 C), High Temperature (< 205°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 110 °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 B4 Ultrathan® rod seal is a U-ring with interference fit on the outer diameter. It is extremely wear-resistant and, due to the anti-extrusion ring, resistant against pressure peaks and ensures reliable load holding performance. It is suitable for high-pressure hydraulics applications of up to 1000 bar.

• Robust seal profile for harshest operating conditions.
• Extreme wear resistance.
• Easier installation.
• 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 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.
• Additional sizes of machined products available on short notice.

Range of application:
Mainly for the sealing of piston rods and plungers in heavy-duty applications in mobile and stationary hydraulics. The dimensions mainly conform to the requirements of ISO 5597 and ISO 3320 for housing and diameters respectively.

Related Documents

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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
B4001400603 14 20 4.5 5.2 -35 110 P6000
B4001800603 18 24 4.5 5.2 -35 110 P6000
B4002200603 22 28 4.5 5.2 -35 110 P6000
B4003000603 30 38 5.7 6.3 -35 110 P6000
B4003800603 38 46 5.7 6.3 -35 110 P6000
B4004000603 40 50 7.3 8 -35 100 P5008
B4004500603 45 53 5.6 6.3 -35 110 P6000
B4005500603 55 65 7.3 8 -35 110 P6000
B4006000603 60 70 10 11 -35 100 P5008
B4008000603 80 95 11.4 12.5 -35 100 P5008
B4011000664 110 130 14.5 16 -35 110 P6000
B4012000657 120 140 15 16 -35 100 P5008
B4016000657 160 180 15 16 -35 100 P5008
B4017000657 170 195 18.2 20 -35 100 P5008
B4018000656 180 205 18.2 20 -45 95 P5009
B4021000664 210 240 22.7 25 -35 110 P6000
B4022000657 220 250 22.7 25 -35 100 P5008
B4023000657 230 260 22.7 25 -35 100 P5008
B4025000657 250 280 22.7 25 -35 100 P5008
B4028000664 280 310 22.7 25 -35 110 P6000
B4030000664 300 330 22.7 25 -35 110 P6000

687PDC
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