Rod seals FES are axial preload seals
FES type piston rod seals have 5 V-rings (3 fabric reinforced seals, 2 rubber seals), 1 support ring and 1 retainer ring. The supporting ring can be made of hard fabric material or plastic, and the retaining ring can only be made of hard fabric.
For rod diameters 80mm and larger, we supply assemblies with 4 fabric reinforced V-ring seals and 1 rubber seal, and for rod diameters 140mm and larger, we supply assemblies with 5 fabric reinforced V-ring seals.
V-ring seal has radial preloading, so that the seal lip and inner and outer diameters have close contact, so as to get good sealing performance with low friction. The working pressure can effectively make the sealing and the mating surface between the tight match. Adjustable grooves (ring head screws or slots) are used to achieve the best fit of relevant friction and sealing properties. Thanks to this adjusting device, the seals can have a longer working life.
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