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Buna-N Hydraulic Piston T-Seal

Buna-N Hydraulic Piston T-Seal

$109.26
$109.26
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Buna-N Hydraulic Piston T-Seal

Engineered for demanding hydraulic piston applications, this T-Seal delivers reliable bi-directional sealing in dynamic environments where standard O-rings fall short. The T-shaped cross-section — combined with anti-extrusion back-up rings — eliminates the spiral failure and extrusion common in high-pressure reciprocating cylinders, giving your system the leak-free performance it demands.

Key Benefits

  • Bi-directional sealing eliminates the need for dual-seal configurations
  • Integrated back-up ring grooves prevent extrusion at elevated pressures
  • Excellent resistance to petroleum-based hydraulic fluids, oils, and fuels
  • Low friction profile reduces stick-slip and extends cylinder service life
  • Dimensionally stable across a wide temperature range

Material Properties

  • Material: Buna-N (Nitrile / NBR)
  • Hardness: 70 Shore A (standard)
  • Temperature Range: -40°F to +250°F (-40°C to +121°C)
  • Fluid Compatibility: Petroleum oils, hydraulic fluids, fuels, water, and mild acids

Typical Applications

  • Hydraulic cylinders (piston sealing)
  • Mobile hydraulics and heavy equipment
  • Industrial machinery and presses
  • Agricultural and construction equipment

Available in a range of bore sizes and cross-sections. Contact us for custom dimensions or material upgrades (PTFE, Viton, Polyurethane).

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Model Specifications

Specifications Weight: 0.0300 lbs Nom ID: 4-1/8 Nom OD: 4-1/2 Nom Height: .334 H Groove Diameter: 4.128 D Groove Width: .334 O Ring Dash Number: 346 Bore: 4.500 Material: Buna-N Temperature Range: -35 TO +220F Pressure Range: 0 - 5,000 PSI Speed: 3 FT/SEC Product Type: T-Seal