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037801 — O-RING

✓ Government record, cited
Legrand · ORING SEAL
PRODUCT OVERVIEW

037801: O-RING.

The O-RING is a Legrand industrial component. Key specifications include outside_diameter: 0.563 INCHES NOMINAL IN, center_hole_diameter: 0.438 INCHES NOMINAL IN, end_item_identification: 5805-01-580-3529 CENTRAL OFFICE, TELEPHONE, AUTOMATIC, part_name_assigned_by_controlling_agency: O-RING. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-605-9543, 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
037801
NSN: 5331-01-605-9543
FSC: 5331 — O-ring
CAGE: 1CJ20 — NETWORK EQUIPMENT TECHNOLOGIES INC (USA)
SPECIFICATIONS
outside_diameter0.563 INCHES NOMINAL IN
center_hole_diameter0.438 INCHES NOMINAL IN
end_item_identification5805-01-580-3529 CENTRAL OFFICE, TELEPHONE, AUTOMATIC
part_name_assigned_by_controlling_agencyO-RING
NSN5331-01-605-9543
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 037801 MFR: Legrand ⚠ 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
•
OUTSIDE DIAMETER: 0.563 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.438 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER0.563 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.438 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYO-RING
END ITEM IDENTIFICATION5805-01-580-3529 CENTRAL OFFICE, TELEPHONE, AUTOMATIC
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 037801?
037801 is a O-RING manufactured by Legrand.
What is the NSN for 037801?
037801 is cataloged in the U.S. Government catalog under NSN 5331-01-605-9543. 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.