Introduction
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Introduction
Why PTFE Glide Seal is required for Cylinders to achieve better performance

The hydraulic and pneumatic cylinders act as not only actuator but also precise positioner to meet increasing demands derived from more complex process equipment. Elastomer energized PTFE Glide seals can provide much lower friction without any stick-slip effect to guarantee smooth running even for intermittent operation or long-stroke application. They perform reliable sealing function even under high service pressures and/or high surface speed. PTFE with inherent low friction and wear resistant property can effectively improve service life of the seal on reciprocating applications and help reduce maintenance cost.

Moreover, it also preferred in certain unfavorable applications such as construction equipment, chemical process, off-shore, galvanizing and color coating line and coal-fired power plant where dusty, high-temperature, aggressive media, or intermittent movement are quite common in sealing environment.

FDA approved PTFE Glide Seals are widely adopted by foodstuff, pharm, and semi-conductor process equipment. Rotary PTFE Seals are also available.

 
Design
The PTFE Glide seal sets consist of a PTFE sealing element and a rubber O-ring functions as elastic energizer. The required sealing effect is achieved by radial pressure, produced by the preloaded element and system pressure, on the lip against mating surface. Various seal profiles can fit most of single and double acting cylinders. Some compact profiles have been well developed to fit AS 568A standard O-ring grooves for one or two back-up rings.
 
Outstanding features of PTFE Glide Seals are:
  1. Excellent gliding characteristics due to low friction
  2. Wear resistance can be improved by proprietary fillers
  3. Very good in sealing most of chemicals
  4. High extrusion resistance
  5. Good thermal conductivity
  6. Full range pf sizes available
  7. Easy fitting
Applications
  1. Low break-out and low friction hydraulic cylinder
  2. Low friction and no stick-slip pneumatic cylinder
  3. Plunger
  4. Cylinders in corrosive environment
  5. Low friction cylinders in high-temperature application
  6. Cylinders for machine tool and construction equipment
  7. Cylinders for Press/Extrusion/Injection molding equipment
  8. Cylinders for precise control application
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