BCD Ring figure with compressor and field mechanicsin the background

BCD – Emissions Elimination Packing Ring

Reduce gas leakages and increase lifetime

More efficiency, less fugitive emissions

Piston rod packing is the primary source of emissions generated from reciprocating compressors. The rings inside the packing seal the gas around the moving piston rod, preventing it from escaping the cylinder. Conventional packing rings work in pairs, each ring covering the gaps in the adjacent ring. However, this still leaves microscopic escape paths between the rings, where the gas can leak.

Our Emissions Elimination Packing Ring (BCD) seals the piston rod to prevent gas leaks during the compressor operation. With up tp 70% leakage reduction, fugitive emissions can be reduced drastically. Combining two rings into one eliminates the disadvantages and reliability issues associated with conventional two-ring designs. The main segments seal the piston rod and form a gap to compensate for wear. BCD extends your maintenance intervals and eliminates downtime due to premature wear. Therefore, the design saves both: material and safeguard the environment.

BCD Ring design

By replacing conventional rings with BCD, we were able

to extend the maintenance intervals, and above all greatly reduce fugitive emissions which will bring us one step closer to our goal of protecting the environment.

Refinery, UK

Functional principle and  design advantages

The Emissions Elimination Packing Ring uses a pressure equalization groove to reduce contact pressure. The main segments seal the piston rod and form a gap to compensate for wear. The cap segments seals in axial and radial directions which ensures pressure equalization and guarantees high efficiency over the entire service life. The narrow design reduces friction which leads to lower heat generation and wear. In addition, the seal is shorter than conventional pressure packings.

BCD – Emissions Elimination Rod Rings at a glance:
  • Significantly reduced gas leakages protect the environment
  • Up to 70% leakage reduction helps operators meet stringent emission standards and reduce gas losses
  • Low frictional resistance: Saves energy and may eliminate the need for water cooling
  • Reduced wear: Increases reliability and service life
  • Easier ring replacement simplifies maintenance
Technical data
BCD – Emissions Elimination Rod Rings

Brochure A4

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PDF document 
- 238 KB
BCD – Emissions Elimination Rod Rings

Brochure Letter format

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PDF document 
- 230 KB

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Components for reciprocating compressors