Rod Rings

As the inventor of floating mechanical packing over a century ago, Cook Compression is unmatched in rod ring application experience. Cook has supplied rod rings for tens of thousands of successful applications worldwide.

Continued development, backed by experienced applications support, results in custom seal ring, pressure breaker, vent ring, and purge/buffer ring solutions that consistently outperform traditional approaches.

A complete selection of materials, from bronze to high-performance non-metallics, dramatically improves packing ring durability in even the most demanding applications.

As the inventor of floating mechanical packing over a century ago, Cook Compression is unmatched in rod ring application experience. Cook has supplied rod rings for tens of thousands of successful applications worldwide.

Continued development, backed by experienced applications support, results in custom seal ring, pressure breaker, vent ring, and purge/buffer ring solutions that consistently outperform traditional approaches.

A complete selection of materials, from bronze to high-performance non-metallics, dramatically improves packing ring durability in even the most demanding applications.

Seal rings stop or restrict the flow of gas out of the cylinder and into the vent or distance piece. Standard seal rings typically use a radial cut and tangent cut ring, plus a back-up ring. Potential leak paths are blocked by ring overlap.

While they are designed to provide a complete seal, all standard rings allow small amounts of leakage. Therefore, seal rings are typically arranged in series to sequentially reduce gas pressure across the packing case.

For operations requiring near-zero leakage, Cook Compression offers advanced low-emissions rod packing. This patented technology incorporates gapless ring designs to eliminate leak paths and reduce fugitive emissions below measurable limits.