BCD – Emissions Elimination Packing Ring

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.

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.