Rider rings & wear bands
Carry the weight of the piston and keep metal off the cylinder liner.
- Function
- Piston support & guidance
- Materials
- Bronze, carbon, PEEK
- Duty
- Horizontal & vertical
Overview
In horizontal compressors the rider ring carries the piston. It must take the load, stay dimensionally stable when hot and wear slowly and evenly so the piston never touches the liner.
We supply solid and cut rider rings, rider bands and rider-VLD piston assemblies in bronze-filled and carbon-filled PTFE and in PEEK for heavy pistons and high temperatures.
Types & designs
- Solid and cut rider rings
- Rider bands / wear bands
- Rider VLD piston assemblies
- Wear rings
Materials
- Bronze-filled PTFE
- Carbon-filled PTFE
- Carbon + graphite PTFE
- Filled PEEK
Not sure which grade? Compare PTFE grades or ask an engineer.
Gases & duties
- Air
- Nitrogen
- Oxygen
- Hydrogen
- CO₂
- Hydrocarbon & process gas
- Refrigeration gases
- LPG & ammonia
Related products
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Seal the compression chamber between piston and cylinder liner, dry-running or lubricated.
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View detailsPressure breaker rings
Absorb pressure pulses at the front of the packing so the sealing rings behind them last longer.
View detailsHave a drawing, a sample or an OEM part number?
Tell us the part, the gas or media, pressure and temperature. We recommend the grade and send a quote.