263 Series: Piston Seal – Compression – AE Ring
The 263 series is one of the most robust five-piece piston seals available on the market.
263 Series
The 263 is one of the most robust 5-piece piston seals available on the market. It consists of a profiled energizer, a PTFE-filled seal element, two active anti-extrusion backup rings and an elastomeric quad ring. It is designed for double-acting cylinders in heavy-duty applications subject to severe pressure spikes coupled with high running clearance. It zero drift performance due to the elastomeric seal ring, which also makes it ideally suited for gas sealing applications.
Installation Drawing
Material Ranges
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.
| PTFE-Bronze compound / NBR / Pom | MT24 |
| PTFE-Glass moly / NBR / POM | MT84 |
Temperature Ranges
MT24
MT84
°C
°F
hydraulic oil
-30…+100
hydraulic oil
-22…+212
Speed
5 m/s (16.5 ft/sec)
Speed
5 m/s (16.5 ft/sec)
Pressure
400 bar (6000 psi)
Pressure
400 bar (6000 psi)
hydraulic oil
-30…+100
hydraulic oil
-22…+212
water oil emulsions (HFA)
+5…+60
water oil emulsions (HFA)
+40…+140
water-glycol fluids (HFC)
-30…+60
water-glycol fluids (HFC)
-22…+140
water
-5…+100
water
+40…+212
Speed
5 m/s (16.5 ft/sec)
Speed
5 m/s (16.5 ft/sec)
Pressure
400 bar (6000 psi)
Pressure
400 bar (6000 psi)
Designed for flexibility across materials, sizes, and performance requirements. Standard and custom diameters ensure optimal integration into your system.
Engineered Performance
Built to Perform
The 263 series piston seal is ideal for sealing gaseous media or where zero cylinder drift is required.
Benefits
- Long service life under the harshest conditions
- Compatible with water-based fluids
- Optimized for high running clearance
- Easy installation
Applications
- Accumulators
- Specialty high-pressure cylinders
- Various advancing and secondary cylinders
