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2HD639 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

2HD639: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include center_hole_diameter: 3.213 INCHES MINIMUM AND 3.261 INCHES MAXIMUM IN, cross-sectional_height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN, end_item_identification: NSN 2320-01-304-2277 PLS (PALLETIZED LOADING SYSTEM). This part is cataloged in the U.S.

Government catalog under NSN 5331-01-407-3466, 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
2HD639
NSN: 5331-01-407-3466
FSC: 5331 — O-ring
CAGE: 45152 — OSHKOSH CORP (USA)
SPECIFICATIONS
center_hole_diameter3.213 INCHES MINIMUM AND 3.261 INCHES MAXIMUM IN
cross-sectional_height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
end_item_identificationNSN 2320-01-304-2277 PLS (PALLETIZED LOADING SYSTEM)
NSN5331-01-407-3466
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2HD639 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: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 3.213 INCHES MINIMUM AND 3.261 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
CENTER HOLE DIAMETER3.213 INCHES MINIMUM AND 3.261 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONNSN 2320-01-304-2277 PLS (PALLETIZED LOADING SYSTEM)
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2HD639?
2HD639 is a O-RING.
What is the NSN for 2HD639?
2HD639 is cataloged in the U.S. Government catalog under NSN 5331-01-407-3466. 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.