The 280 Series heavy duty piston seal is a low-friction design, consisting of a PTFE-filled seal and a profiled energizer. It is designed for large-diameter, double-acting cylinders in challenging applications, where high pressure and large extrusion gaps exist.
Double acing applications
Compatible with a wide range of media
Available in diameters up to 2100 mm
System Seals’ custom blended PTFE compounds provide ultra-low friction and high-speed performance with minimal wear. The standard compounds are PTFE with Bronze filler, or PTFE filled with Glass-Moly. The temperature range of the seal can be increased by selecting a FPM energizer in place of the standard NBR energizer.
|PTFE-Bronze compound + NBR O-ring||MT23|
|PTFE-Bronze compound + FPM O-ring||MT26|
|PTFE-Glass/MoS2 compound + NBR O-ring||MT83|
|PTFE-Glass/MoS2 compound + FPM O-ring||MT86|
|water oil emulsions (HFA)||-||-||+5…+60||+40…+140|
|water-glycol fl uids (HFC)||-||-||-30…+60||-22…+140|
|polyol esters (HFD)||-||-||-||-|
|Speed||5 m/s (16.4 ft/sec)|
|Pressure||400 bar (6000 psi)|
Note: for other materials or fluids please contact our engineering department.