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7339987-2 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7339987-2: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, center_hole_diameter: 2.100 INCHES NOMINAL IN, cross-sectional_height: 0.210 INCHES NOMINAL IN, end_item_identification: 5371Q;SPRUANCE CLASS DD(963). This part is cataloged in the U.S.

Government catalog under NSN 5331-01-469-6905, 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
7339987-2
NSN: 5331-01-469-6905
FSC: 5331 — O-ring
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
center_hole_diameter2.100 INCHES NOMINAL IN
cross-sectional_height0.210 INCHES NOMINAL IN
end_item_identification5371Q;SPRUANCE CLASS DD(963)
NSN5331-01-469-6905
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7339987-2 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: 0.210 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 2.100 INCHES NOMINAL IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.210 INCHES NOMINAL IN
CENTER HOLE DIAMETER2.100 INCHES NOMINAL IN
END ITEM IDENTIFICATION5371Q;SPRUANCE CLASS DD(963)
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
SUBSTITUTES & CROSS-REFERENCES 8
N0674-70 2-330Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AS568B-330Reference document
Same NSN cross-reference
Reference document — Secondary reference
6804004Reference document
Same NSN cross-reference
Reference document — Secondary reference
N0674 2-330Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AS568-330Reference document
Same NSN cross-reference
Reference document — Secondary reference
2-330N674-70Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7339987-2?
7339987-2 is a O-RING.
What parts can replace 7339987-2?
There are 8 known substitutes for 7339987-2: N0674-70 2-330, AS568B-330, 6804004 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7339987-2?
7339987-2 is cataloged in the U.S. Government catalog under NSN 5331-01-469-6905. 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.