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Aavolyn # 20060-31363-009, AVA47 TY313 Wiper Set

This AAVOLYN Type 313 oil wiper ring is used in reciprocating compressors to prevent oil from the crankcase traveling along the piston rod and into the pressure packing. It consists of an individual oil seal manufactured tangent to the rod with no clearance at the bore. Each ring is an independent seal with a deep wiping edge and wide oil groove at the I.D. The oil groove acts as a second wiping edge and uses drilled holes to allow the wiped oil to drain away from the rod. AAVOLYN uses a tapered wiping edge on the face of the ring to more effectively strip the oil coating from the piston rod.


Cylinder/ Rod Diameter






Material Description

AVA47 provides exceptional long life in those applications where there are hydrocarbons or liquids flowing intermittently in the gas. Standard carbon filled PTFE rings depend on riding over a coating of PTFE on the rod or the cylinder to provide minimal ring wear. In applications where solids or liquids are present and tend to remove the coating provided by standard carbon filled, AVA47 is the material of choice. By adding anti-friction materials, excellent ring life is achieved along with eliminating wear on the piston rod, piston or cylinder wall.
Recommended Applications: Lubricated Service, Wet CO2, Natural Gas, Vinyl Chloride

AVA47 Application Profile.
AAVOLYN's AVA47 PTFE blend profiled by E.I. duPont.

AVA47 filled PTFE - This proprietary material is ideally suited for lubricated and mini-lube service, especially where solids and liquids are prevalent in the gas stream. Piston rings, rider rings and rod packing manufactured from AVA47 have outperformed the standard material available in the Natural Gas Market today.