The 281 Series Single-Acting Piston Seal is a low-friction design, consisting of a PTFE filled seal and an O-ring energizer. It is designed for single-acting cylinders in challenging applications, where low friction and high wear resistance are needed.
Compatible with a wide range of media
Available in diameters up to 2100 mm
System Seal’s custom blended PTFE filled compounds provide ultra-low friction and high-speed performance with minimal wear. The standard compounds are PTFE filled with Bronze filler, or PTFE filled with Glass-Moly. 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 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…+600||-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.