Piston and Rider Ring
Piston and Rider Ring
Globagon’s piston and rider rings are designed to ensure optimal performance and durability in reciprocating compressors. Our piston rings provide reliable gas-tight operation, while rider rings prevent direct contact between the piston and cylinder wall—minimizing wear and extending component life.
A key design challenge is managing thermal expansion caused by temperature fluctuations during operation. To address this, Globagon carefully selects materials based on mechanical strength, chemical resistance, and thermal behavior in various gas environments.
Our rings are engineered with precise consideration of compressor conditions—including temperature, pressure, gas composition, lubrication, piston speed, and liner material—and are manufactured from high-performance polymers and engineering plastics sourced from leading European suppliers.
Working Principle
Piston and rider ring
Piston rings are crucial components that seal compressed gas within the compression chamber. Using only one piston ring, regardless of whether it has a straight or angled gap, is not enough to prevent gas leakage. To achieve better sealing performance, multiple piston rings are installed in sequence. Their number and arrangement depend on factors like pressure differences and the molecular weight of the gas.
Rider rings, meanwhile, are responsible for guiding the piston rod and assembly inside the cylinder during compressor operation. They prevent direct metal contact between the piston and the cylinder liner, reducing wear and extending the system’s lifespan. Rider rings are usually pressure-relieved and designed with an angled gap. In single-acting pistons, the rider ring is placed on the side opposite the pressure zone.
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