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21511741 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

21511741: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, end_item_identification: FUEL INJECTION PUMP ON ALCO DIESEL ENGINE MODEL 16MS-251CE ONBOARD 210 FT WMEC COAST GUARD VESSELS FT. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-992-5982, 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
21511741
NSN: 5331-00-992-5982
NIINs: 009925982, 013252747
FSC: 5331 — O-ring
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialRUBBER SYNTHETIC
end_item_identificationFUEL INJECTION PUMP ON ALCO DIESEL ENGINE MODEL 16MS-251CE ONBOARD 210 FT WMEC COAST GUARD VESSELS FT
NSN5331-00-992-5982
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21511741 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL HEIGHT: 0.125 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.125 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
SUBSTITUTES & CROSS-REFERENCES 2
DRP-15990A PC BReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
2561-232Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21511741?
21511741 is a O-RING.
What parts can replace 21511741?
There are 2 known substitutes for 21511741: DRP-15990A PC B, 2561-232. Substitute compatibility should be verified for your specific system.
What is the NSN for 21511741?
21511741 is cataloged in the U.S. Government catalog under NSN 5331-00-992-5982. 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.