Rod seal Prädifa series BHI, FlexiSeal® | Product Series

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Rod seal Prädifa series BHI, FlexiSeal®

Rod seal Prädifa series BHI, FlexiSeal®

Where to Buy

Rod seal, inside dynamic sealing on reciprocating rods. FlexiSeal, spring-energized PTFE seal, high-pressure.

Technical Specifications

  • Thermal Application Type: Standard Moderate Temperature (-35 to 100°C), Extremely High Temperature (> 205°C)
  • Media: Hydraulic
  • Polymer Material Options: Ultra-High Molecular Weight Polyethylene (UHMW-PE), Polytetrafluoroethylene (PTFE, mPTFE, TFM, Polon®)
  • Maximum Operating Pressure: 550 bar
  • Minimum Operating Temperature: -260 to -190 °C
  • Maximum Operating Temperature: 80 to 300 °C
  • Maximum Surface Speed: 15 m/sec
  • Unit of Measure: Length: mm
  • Cushioning Mechanism: No
  • Pressure Rating: High Pressure (< 500 bar)
Safety Warning

Full Product Description

The BHI product series is a single-acting rod seal featuring a FlexiSeal® design with a helicoil spring. It is characterized by extremely high temperature and chemical resistance and ideally suited for use in higher pressures.

• Extended heel reduces effects of extrusion.
• Heavy dynamic lip (inside) ensures longest life.
• Short, wiper-type dynamic lip reduces frictional forces due to hydrostatic pressure.
• Helical spring for high load and small deflection range.
• Squared, long static lip stabilizes the seal.
• Widest range of cross-sections and diameters available, including sizes for upgrading standard O-ring grooves.
• Many high-resilience energizer options available, including choice of light, medium and heavy loads and NACE for oil field use.
• Low-cost elastomeric energizers available, all with excellent fatigue resistance.

Range of application:
High-pressure, reciprocating rod sealing.

The BHI rod seal is available in the following compounds:
001 - Industrial applications
005 - High temperatures
006 - Heavy-duty

Related Documents

Product Demos & Tutorials
Mixing the right ingredients: Material Development at Parker-Prädifa
Literature and Reference Materials
PTFE Seals Design Guide--PTD3354
FlexiSeal®--BHI inside dynamic u2013 reciprocating u2013 high-pressure--PTD3354
Installation Guidelines for FlexiSeals®--PTD3354
Storage and Cleaning of Elastomer Seals--PTD3032
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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
BHI-M000390-02-006-1 3.9 8.42 4.6 4.6 -200 80 006
BHI-M000600-02-006-1 6 10.52 4.6 4.6 -200 80 006
BHI-M001000-03-006-1 10 16.15 6 6 -200 80 006
BHI-M001400-03-005-1 14 20.15 6 6 -190 230 005
BHI-M002000-04-005-1 20 29.45 8.5 8.5 -190 230 005
BHI-M002200-04-005-1 22 31.45 8.5 8.5 -190 230 005
BHI-M007000-04-005-2 70 79.45 8.5 8.5 -190 230 005
BHI-M012000-05-007-2 120 132.12 12.1 12.1 -190 230 007
BHI-M016000-05-007-2 160 172.12 12.1 12.1 -190 230 007
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