Available in Iron, Bronze, or Babbit
The type 320 radial oil scraper ring is designed to be used pinned in sets as a wiper assembly. Its function is to wipe oil from the piston rod and prevent it from traveling into the packing area. The 320 design includes the unique tapered wiping edge, deep oil groove in the bore and large oil ports to allow rapid removal of oil wiped from the rod. It is utilized in many gas and process compressors depending on the design of the compressor manufacturer.

We have a complete line of compressor piston rings, bull rings, wiper rings and packing for all standard JOY air compressors. Each product is manufactured from quality materials and incorporates special features to maximize performance. The Teflon piston rings and rider rings utilize AVA17 glass filled Teflon molded and heat treated to increase material wear properties and extend ring life. Each part is individually inspected to ensure quality of manufacture.

Piston Rings are available in Angle Cut-TYPE 410, Butt Cut-TYPE 412, or Step Cut- TYPE 411
The standard one piece piston ring is utilized by itself or in combination to seal gases and liquids in a variety of application. Ring design and materials vary based on the product sealed, temperature, pressure, and condition of the service. These piston rings are for all applications from standard air using one piece angle cut rings to high pressure specialized gas services where pressure balancing and special materials are required. Proper clearance design and selection of ring material are critical to provide quality performance and extended ring life

Solid riders or wear rings, Type 450, are required where the ring groove on the piston travels out into the valve area or cylinder counter bore. The solid, stretch on ring is designed to stretch over the piston diameter and then fit tightly on the ring groove. Proper strain and memory considerations are important to ensure that the solid ring remains tightly on the piston during operating temperatures and pressures. Pressure relief designs are available in high temperature applications where riders have a tendency to come loose on the piston in service. This allows gas, trapped under the ring, to bleed away, thus eliminating rapid wear of the ring and possible breakage

The rider split or wear ring is part of all piston designs where there is no lubrication or the possibility of loss of lubrication exists during operation. New process compressors have rider rings included whether the compressor is lubricated or non-lubricated. The rider supports the weight of the piston and prevents contact with the cylinder wall It is designed taking into consideration the weight of the piston and rod, the physical properties of the ring material, the operating conditions and the desired ring life. The type 430 split rider ring is recommended unless the ring travels out into the counter bore area. Side and face grooves can be added to ensure the rider ring does not act as a piston ring. The large surface area would generate significant frictional heat Therefore grooves are necessary to prevent the ring from sealing.