Heavy-Duty, Double-Acting Wiper

Series 318: Heavy-Duty, Double-Acting Wiper

The 318 Series Heavy-Duty, Double-Acting wiper is one of the most popular mill-duty wipers in the steel industry. It includes a reinforced PTFE-filled scraper ring and two energizing O-rings. The design incorporates a unique umbrella feature that wraps around the face of the cylinder to create an impenetrable barrier as well as an inner sealing lip to remove any oil film from the rod as it cycles. The O-rings individually energize the two wiper lips. In most applications, a pressure relief port between the wiper and the rod seal is recommended.



Protects the hydraulic cylinder internals


Works in short stroke applications

Works in high-temperature environments


The 318 Series Heavy-Duty, Double-Acting Wiper prevents contamination ingress in harsh environments, while maintaining low friction.

Typical Applications

  • Steel and aluminum processing
  • Cold and hot strip mills
  • Automatic Gauge Control cylinders

The 318 Series wiper consists of a custom-blended PTFE that provides ultra-low friction and high-speed performance with minimal wear. The standard compound is PTFE with Bronze filler. The temperature range of the wiper can be increased by selecting an FPM energizer in place of the standard NBR energizer.

Material Code
PTFE-Bronze compound + NBR O-ring MT23
PTFE-Bronze compound + FPM O-ring MT26
Temperature MT23


hydraulic oil -30…+100 -22…+212 -10…+200 +15…+392
water oil emulsions (HFA) - - - -
water-glycol fluids (HFC) - - - -
polyol esters (HFD) - - -10…+200 +15…+392
water - - - -
Speed 5 m/s (16.5 ft/sec)
Pressure -

Note:for other materials or fluids please contact our engineering department.