225 Series V-Ring Packing Set

The 225 series is an industry standard, widely specified in various applications. The evolution of the packing seal industry from leather and rubber to plastics has led to the development of variations of the 6225 series, enhancing performance to meet specific requirements. Initially designed as replacements for chevron AN-6225 packings in rubber or leather, this low-profile design has become the industry standard for PTFE packing sets.

The “V” rings and male adapter feature a larger included angle on the convex side than the concave side, and the female adapter. Upon compression, the rings’ lips flare radially, creating a reliable seal. The lower overall height of the packing set enables the use of more rings, providing additional sealing surfaces. This design excels in low-pressure applications such as fluid hydrogen, water or gas control, where rapid seal activation is crucial.

The majority of valves operate at lower pressures, and the available stuffing box size is limited. While the number of v-rings in a set is infinitely configurable, it depends on the specific application. Maximizing the number of sealing edges enhances sealing performance. Due to their thinner profile, these rings flare under reduced pressure, making them ideal for flow control or self-monitoring valves, stem packings, and ball valves.

This design boasts a temperature rating of -100F to 500 F and a stack height 50% lower than most other PTFE or rubber rings. By varying the number of v-rings, this design can accommodate all pressure ranges, allowing for a shorter packing set and shallow stuffing box. The reduced PTFE requirement results in lower ring costs. Top and bottom adapters can be made from PTFE for low and medium pressures, or bronze for high-pressure applications.