Piston seal Prädifa series BAO, FlexiSeal® | Product Series

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Outside Diameter (mm)

Inside Diameter (mm)

Element Height (mm)

Groove Width

Minimum Working Temperature (C)

Maximum Working Temperature (C)

Seal Material

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Piston seal Prädifa series BAO, FlexiSeal® Piston seal Prädifa series BAO, FlexiSeal®

Piston seal Prädifa series BAO, FlexiSeal®

Where to Buy

Piston seal. Outside dynamic sealing on reciprocating rods. FlexiSeal. Spring-energized PTFE seal. Axially short design.

Technical Specifications

  • Media: Multiple
  • Polymer Material Options: Polytetrafluoroethylene (PTFE, mPTFE, TFM, Polon®)
  • Maximum Operating Pressure: 200 bar
  • Minimum Operating Temperature: -260 to -190 °C
  • Maximum Operating Temperature: 230 to 300 °C
  • Maximum Surface Speed: 15 m/sec
  • Unit of Measure: Length: mm
  • Cushioning Mechanism: No
  • Thermal Application Type: Extremely High Temperature (> 205°C)
  • Pressure Rating: Medium Pressure (< 250 bar)
Safety Warning

Full Product Description

The BAO product series is a single-acting piston seal featuring a FlexiSeal® design with a helicoil spring. It stands out due to extreme temperature and chemical resistance and is ideally suited for the medium pressure range. Due to its axially short length, the seal is particularly well suited for compact piston designs.

• Heavy dynamic lip (outside) 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:
For reciprocating piston sealing.

Related Documents

Literature and Reference Materials
PTFE Seals Design Guide--PTD3354
FlexiSeal®--BAO outside dynamic u2013 reciprocating--PTD3354
Installation Guidelines for FlexiSeals®--PTD3354
Storage and Cleaning of Elastomer Seals--PTD3032
Product Demos & Tutorials
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) Seal Material
BAO-M007000-35-007-2X 70 64 6 7.5 -190 230 Polytetrafluorethylen 25% carbon/graphite
BAO-M007600-05-001-1 76 63.88 9.5 9.5 -190 230 Polytetrafluorethylen virgin
BAO-M009200-05-001-1 92 79.88 9.5 9.5 -190 230 Polytetrafluorethylen virgin
BAO-M000800-01-001-1 8 5.16 2.4 2.4 -190 230 Polytetrafluorethylen virgin
BAO-M001400-01-001-1 14 11.16 2.4 2.4 -190 230 Polytetrafluorethylen virgin
BAO-M001600-01-001-1 16 13.16 2.4 2.4 -190 230 Polytetrafluorethylen virgin
BAO-M001800-02-001-1 18 13.48 3.6 3.6 -190 230 Polytetrafluorethylen virgin
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