PTFE Piston Rings and Rider Rings

The function of PISTON RINGS, mounted on the pistons of lubricated or non-lube (oil free) compressors, are designed to ensure that the gas is compressed and to provide a seal between the piston and the cylinder.The function of RIDER RINGS, used mainly in oil free or mini-lube compressors, is to support or guide the piston and rod assembly and prevent contact between the piston and the cylinder (risk of seizure).

• One-piece or segmental straight
• Angle cut
• Step cut
• Twin Ring
• Double Twin Ring
• Two Segment
• Pressure balanced

AEW also custom designs rings and has developed specific combinations for particularly problematic and demanding applications. This has also included numerous successful conversions from lubricated to non-lubricated operation. Pressure balanced rings are available, when deemed appropriate for high pressure applications and piston/rider ring combinations are also available for more specific applications.