# Emerson Fisher 1J873335072
>
> Type: Packing Box Ring, for 3/4″ (19.1 mm) stem, ET / EZ / ED Easy‑E control valve, ENVIRO‑SEAL packing assembly
## Weight
**0.45 kg (1.0 lb)**
## English Specification
1. **Function**
Upper packing box ring / gland follower ring, locates and supports packing stack, works with live load Belleville spring and PTFE packing rings for fugitive emission packing set.
2. **Stem Size**
3/4 inch (19.1 mm) stem
3. **Material**
316 Stainless Steel (316SS)
4. **Dimension**
Bore: 0.75 in (19.1 mm), OD: 1.375 in
5. **Applicable Valve**
Fisher ET, EZ, ED Easy‑E control valve, ENVIRO‑SEAL single packing configuration
6. **Temperature Rating**
-50 ℃ ~ +425 ℃ (-58 ℉ ~ +797 ℉)
7.