PTFE Piston seals; Single- and Double-Acting


PTFE piston seals have properties which exceed most other known materials when it comes to friction and stick-slip, which is basically non-existing when PTFE Seals are used. The chemical and thermal resistance of the PTFE Seals are beyond the specifications of most other materials as well.
PTFE Seals are hard and non-elastic and are better suited for compact applications than most other known seal types.
The most important thing for the PTFE Piston Seal as well as the PTFE Rod Seal is to maintain a high level of sealing performance through service life.
The choice of type of piston seal is decided by the function of the cylinder, but the overall demands for the PTFE seals can still differ in many respects.

Single acting

The single-acting PTFE seal is designed to function where pressure is applied from one side only.
For cylinders strictly single-acting, it will always be preferred to choose a PTFE Piston Seal designed to provide optimum sealing qualities for single acting applications. This will leave the thinnest possible lubrication film in the contact area between the PTFE Seal and the cylinder surface.

Double acting

For double acting cylinders, it is vital to use double-acting seals as well, in stead of two single-acting seals which can easily cause a breakdown.
The double acting PTFE Seal is designed to operate with pressure from either side and should fulfil as great a demand for absolute tightness at resting position as the single acting PTFE seal.

The PTFE Seals which Accofluor A/S supply, either standard or custom designed, exceed the highest known standards to PTFE (Teflon*) Seals today.

Our key elements are quick response and short delivery times alongside our good customer service.