Heavy-Duty Accumulator Piston Seal
Series 263: Heavy-Duty Accumulator Piston Seal
The 263 series is one of the most robust five-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 offers zero-drift performance due to the elastomeric seal ring, which also makes it ideally suited for gas sealing applications.
Installation
Benefits
Long service life under the harshest conditions
Compatible with water-based fluids
Optimized for high running clearance
Easy installation
Applications
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 °C |
°F |
MT84 °C |
°F |
|---|---|---|---|---|
| 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
