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.
Easy retrofit for cast iron piston rings
Can pass over ports
Will not extrude from large clearance gaps
Typical applications include:
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.
|POM + NBR energizer||ML03|
|Polyamide + NBR energizer||ML06|
|Polyamide/Glass-Filled + NBR energizer||ML51|
|PEEK + NBR energizer||MK84|
|PEEK + FPM energizer||MK85|
|water oil emulsions (HFA)||-…-||-…-||+5…+60||+40…+140|
|water-glycol fluids (HFC)||-…-||-….-||-30…+60||-22…+140|
|polyol esters (HFD)||-||-||-||-|
|Speed||5 m/s (16.5 ft/sec)|
|Pressure||400 bar (6000 psi)|
Note: for other materials or fluids please contact our engineering department.