Piston Seal – Compression – AE Ring



Long service life under the harshest conditions

Compatible with water-based fluids

Optimized for high running clearance

Easy installation


The 263 series piston seal is ideal for sealing gaseous media or where zero cylinder drift is required.

Typical applications include:

  • Accumulators
  • Specialty high-pressure cylinders
  • Various advancing and secondary cylinders

The 263 series piston seal features custom blended PTFE-filled compounds that provide ultra-low friction and high-speed performance and minimal wear. The standard compounds are PTFE-filled with bronze filler or PTFE-fille with glass-moly. The 263 series features a robust elastomeric energizer with backup rings in a high strength thermoplastic. The temperature range of the seal can be increased by selecting an FPM energizer in place of the standard NBR energizer.

Material Code
PTFE-Bronze compound / NBR / Pom MT24
PTFE-Glass moly / NBR / POM MT84
Temperature MT24
°F MT84
hydraulic oil -30…+100 -22…+212 -30…+100 -22…+212
water oil emulsions (HFA) +5…+50 +40…+140
water-glycol fl uids (HFC) -. -30…+60 -22…+140
water –5…+100 +40…+212
Speed 5 m/s (16.5 ft/sec)
Pressure 400 bar (6000 psi)

Note: for other materials or fluids please contact our engineering department

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Learn more about System Seals

Download the System Seals Steel and Metal Processing catalog to learn more about our proprietary seals and how we help steel and aluminum mills save millions of dollars in uptime and productivity.