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21511859-1 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

21511859-1: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include special_features: LUBRICATING OIL PUMP TO FILTER PIPE FIBER, 5-5/8SQ X 4-1/2I.D. X 1/16IN IN, end_item_identification: 4320-01-387-2931; PUMP, ROTARY; PN 23900574.

This part is cataloged in the U.S. Government catalog under NSN 5330-01-650-9051, 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
21511859-1
NSN: 5330-01-650-9051
FSC: 5330 — Packing and Gasket Materials
CAGE: 21972 — VIBRAC LLC (USA)
SPECIFICATIONS
special_featuresLUBRICATING OIL PUMP TO FILTER PIPE FIBER, 5-5/8SQ X 4-1/2I.D. X 1/16IN IN
end_item_identification4320-01-387-2931; PUMP, ROTARY; PN 23900574
NSN5330-01-650-9051
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21511859-1 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESLUBRICATING OIL PUMP TO FILTER PIPE FIBER, 5-5/8SQ X 4-1/2I.D. X 1/16IN IN
END ITEM IDENTIFICATION4320-01-387-2931; PUMP, ROTARY; PN 23900574
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21511859-1?
21511859-1 is a GASKET.
What is the NSN for 21511859-1?
21511859-1 is cataloged in the U.S. Government catalog under NSN 5330-01-650-9051. 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.