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255123 PIECE 11 — RETAINER,SEAL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

255123 PIECE 11: RETAINER,SEAL.

The RETAINER,SEAL is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: MATERIAL IS NI-CU,QQ-N-281,CLASSA. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-207-4858, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
255123 PIECE 11
NSN: 4820-01-207-4858
FSC: 4820 — Valves, Nonpowered
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
general_characteristics_item_descriptionMATERIAL IS NI-CU,QQ-N-281,CLASSA
NSN4820-01-207-4858
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 255123 PIECE 11 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: MATERIAL IS NI-CU,QQ-N-281,CLASSA
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONMATERIAL IS NI-CU,QQ-N-281,CLASSA
SUBSTITUTES & CROSS-REFERENCES 1
256348 PIECE 16Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 255123 PIECE 11?
255123 PIECE 11 is a RETAINER,SEAL.
What parts can replace 255123 PIECE 11?
There is 1 known substitute for 255123 PIECE 11: 256348 PIECE 16. Substitute compatibility should be verified for your specific system.
What is the NSN for 255123 PIECE 11?
255123 PIECE 11 is cataloged in the U.S. Government catalog under NSN 4820-01-207-4858. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.