# Emerson Fisher 10A3266X082
> Type: Cage Seal Ring / C‑Seal, for 8″ ET / ED Easy‑E balanced trim
> ⚠️ Remark: Emerson has no standalone official photo for this small trim ring; only reference picture of ET valve trim assembly
1. **Function**
C‑seal ring for balanced plug trim, installed between valve plug and cage. It provides enhanced tight shutoff performance, upgrades shutoff class from Class IV to Class V (ANSI/FCI 70‑2). Works together with piston ring 10A3261X012 and load ring 20A3267X012.
2. **Applicable Valve**
Fisher ET, ED Easy‑E, NPS 8 inch Type E balanced cage-guided control valve, CL600
3. **Material**
Filled PTFE with stainless steel spring energizer
4. **Temperature Rating**
-50 ℃ ~ +260 ℃ (-58 ℉ ~ +500 ℉)
Limited by PTFE material
5. **Pressure Rating**
Suitable for CL600 / PN100 service
6. **Shutoff Performance**
Class V shutoff when this C‑seal is fitted; standard piston ring only gives Class IV