The Rings with a “V” section are commonly used as sealing systems for slow rotating movements shaft.
The P.T.F.E. characteristics (no stick-slip situation) grant very good performances on valves shaft assuring a smooth movements even after long periods of stop.
Usually the “V” ring pack is made by a head and a base, used to give the pack sealing capacity or to ease the movements, and a number of “V” shaped rings made with different polymers or compounds depending on the applications.
The rings number depends on the density of the fluid to be contained within the rings. Usually the P.T.F.E. with various compounds type can fit to all the different applications, for other application P.E.E.K. is getting more and more used.