Key Specifications / Parameters Parameter Description / Value Part Number 10A4220X012 Product Type Retaining Ring Material 302 Stainless Steel (302 SST) (as listed in Fisher trim parts table) Intended Use Used as Key 27* “Retaining Ring for Spring‑Loaded Seal Ring” in Fisher ET/EAT valves (NPS 1‑6) Valve Size Fitment Applicable to valves sized NPS 1‑6 (as per parts list) Role To retain the spring‑loaded seal ring in place, ensuring correct seating and alignment in the valve trim Condition / Status Available as a spare part (may be legacy)
