PTFE wipers are mainly used where wipers of other materials would fail because of the particular operating conditions involved. Their function lies in preventing foreign particles or fluids from preventing into the sealing area, thereby protecting the seals, guides and bearings behind the wipers from wear and damage.

Sealing pressure on PTFE wiper lip is usually energized by an elastic O-ring. The standard material combination is bronze filled PTFE and NBR. This is mainly utilized in hydraulic and pneumatic application.

PTFE Glide seal sets are mainly used to seal reciprocating rods, pistons and plungers.

The types R1, R2, RL, P1, P2, and PD are mainly used in hydraulic applications. They have proven their excellent performance in, for example, machine tools, molding machines, control devices, construction equipment and vehicles. The PP profile is specially designed for use in pneumatic applications. If a seal set is to be used as end seal, we recommend a wiper also be adopted. The profiles come in various material combinations to meet the requirements of the particular application.

Seal sets of type RO and PO can be used in hydraulic applications in place of dynamically stressed O-rings. Existing grooves can be used as fitting area if they conform to the US standard AS 568A.
These seal sets enable the dynamic behavior to be improved, as a result of which higher gliding speeds, smoother running properties and higher wear resistance are attained. PTFE Glide Seal sets can also be used in O-ring fitting areas designed for one or two back-up rings.

Care must be taken in the design to ensure that the groove width L is selected according to the number of back-up rings. The standard material combination is modified PTFE and NBR (O-ring).

PTFE rotary Glide Seal sets are mainly used to seal rotating transmission leadthroughs or pivot drives and are characterized by their special low stick-slip tendency. To guarantee operation even under difficult conditions, the gliding surface has circumferential lubrication grooves.

We offer type RS as standard profile for rotary glide sealing application. Other profiles can also be provided upon request.

If the rotary seal set is used as end seal, a protective wiper should be fitted. The standard material combination is carbon filled PTFE and NBR (O-ring).