Standard-Duty Rod Seal

Series 109: Standard-Duty Rod Seal

The 109 Series rod seal is a low-friction design, consisting of a PTFE-filled seal and an O-ring energizer. The sealing lip design is optimized to ensure maximum sealing performance at both low and high pressures. The lip design features a “pump-back” capability, which eliminates pressure trapping when used as a buffer seal in a Zero-Leak Technology configuration.



Low friction

High-speed applications

High-temperature resistance

Low wear

Extrusion resistant

Compatible with a wide range of media

Available in diameters up to 2100 mm


The 109 Series Rod Seal is ideal for high-pressure sealing applications, offering low-friction performance and high-speed capability.

Typical Applications

  • Injection Molding
  • Mobile Hydraulics
  • Hydraulic Presses
  • Used as a buffer seal in a Zero-Leak Technology System

System Seals’ unique PTFE-filled 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 O-ring in place of the standard NBR O-ring.

Material Code
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
Temperature MT23


hydraulic oil -30…+100 -22…+212 -30…+100 -22…+212
water oil emulsions (HFA) - - +5…+60 +40…+140
water-glycol fl uids (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.