Rod packing rings
Seal the piston rod where it leaves the cylinder, segment by segment.
- Design
- Segmental, spring-loaded
- Parts
- Rings, cups, garter springs
- Duty
- Static & dynamic sealing
Overview
Rod packings stop gas escaping along the piston rod. Each packing cup holds a pair of segmental rings, a radial-cut sealing ring and a tangential-cut ring, held on the rod by a garter spring so they keep sealing as they wear.
Corvex supplies complete packing sets and individual rings for every stage, including cylinder packings and suction packings.
Types & designs
- Radial- and tangential-cut ring pairs (3- and 6-piece)
- Packing rings with or without garter springs
- Packing cups and cylinder packings
- Suction packing
- Gland packing and seal rings for clearance
Materials
- Carbon-filled PTFE
- Carbon + graphite PTFE
- Bronze-filled PTFE
- Glass-filled PTFE
- Glass + MoS₂ PTFE
- Graphite-filled PTFE
- Proprietary Corvex compounds
- 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
View allPiston rings
Seal the compression chamber between piston and cylinder liner, dry-running or lubricated.
View detailsRider rings & wear bands
Carry the weight of the piston and keep metal off the cylinder liner.
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.