1. **Function**
Primary sealing V-ring of the ENVIRO‑SEAL packing stack, low friction stem sealing, fugitive emission control, works with the live load spring, packing follower and packing box ring you previously inquired.
2. **Stem Size**
3/4 inch (19.1 mm) stem
3. **Material**
Virgin PTFE (Teflon)
4. **Applicable Valve**
Fisher ET, EZ, ED Easy‑E control valve, single ENVIRO‑SEAL live‑loaded packing arrangement
>
> Full matching packing set for 3/4″ stem:
> 1F125036042 (PTFE V-ring) + 1E944735072 (lower packing follower) + 1J873335072 (upper packing ring) + 1F125637012 (live load Belleville spring)
5. **Temperature Rating**
-50 ℃ ~ +260 ℃ (-58 ℉ ~ +500 ℉)
>
> Note: PTFE upper limit lower than metal packing components