Heavy-Duty Step-Cut Piston Seal
Series 273: Heavy-Duty Step-Cut Piston Seal
The 273 Series Heavy-Duty Step-Cut Piston Seal is an ideal upgrade from traditional cast iron piston rings. Manufactured in a variety of high modulus materials, the 273 is easy to install and eliminates the threat of extrusion with higher-than-normal clearance gaps, as well as resists shearing when crossing ports. A single 273 seal can even replace multiple cast iron rings, while eliminating nuisance leaks. The 273 maintains the same wear-resistant characteristics as cast iron. Manufactured in a variety of materials and sizes from 6 mm to 2100 mm in standard or custom diameters.
Installation
Benefits
Easy retrofit for cast iron piston rings
Can pass over ports
Eliminated leaks
Low friction
Will not extrude from large clearance gaps
Applications
Typical applications include:
- Mobile Hydraulics
- General Industry Hydraulics
- Ideal for telescopic cylinders
System Seals has a number of custom blended compounds and high-performance materials suited for this product line. These materials include: UHMWPE, Polyamide, POM and glass reinforced polymers. Various energizer materials are available to suit the application, fluid and temperature.
| Material | Code |
|---|---|
| POM + NBR energizer | ML03 |
| Polyamide + NBR energizer | ML06 |
| Polyamide/Glass-Filled + NBR energizer | ML51 |
| PEEK + NBR energizer | MK84 |
| PEEK + FPM energizer | MK85 |
| Temperature | ML03 °C |
°F |
ML06 °C |
°F |
|---|---|---|---|---|
| hydraulic oil | -30…+100 | -22…+212 | -30…+100 | -22…+212 |
| water oil emulsions (HFA) | -…- | -…- | +5…+60 | +40…+140 |
| water-glycol fluids (HFC) | -…- | -….- | -30…+60 | -22…+140 |
| polyol esters (HFD) | - | - | - | - |
| 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.
