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5343-08 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5343-08: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER, special_features: NITRILE RUBBER MATERIAL, center_hole_diameter: 1.051 INCHES NOMINAL IN, cross-sectional_height: 0.070 INCHES NOMINAL IN, end_item_identification: MISSILE SYSTEM, AEGIS SURFACE (SMS) MK7; ARLEIGH BURKE CLASS DDG, part_name_assigned_by_controlling_agency: SEAL (O-RING) FOR 1/2" PIPE SIZE. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-503-0147, 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
5343-08
NSN: 5331-01-503-0147
FSC: 5331 — O-ring
CAGE: 7F206 — NUCRALOY CORP (USA)
SPECIFICATIONS
materialRUBBER
special_featuresNITRILE RUBBER MATERIAL
center_hole_diameter1.051 INCHES NOMINAL IN
cross-sectional_height0.070 INCHES NOMINAL IN
end_item_identificationMISSILE SYSTEM, AEGIS SURFACE (SMS) MK7; ARLEIGH BURKE CLASS DDG
part_name_assigned_by_controlling_agencySEAL (O-RING) FOR 1/2" PIPE SIZE
NSN5331-01-503-0147
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5343-08 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: 0.070 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.051 INCHES NOMINAL IN
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.070 INCHES NOMINAL IN
SPECIAL FEATURESNITRILE RUBBER MATERIAL
CENTER HOLE DIAMETER1.051 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYSEAL (O-RING) FOR 1/2" PIPE SIZE
END ITEM IDENTIFICATIONMISSILE SYSTEM, AEGIS SURFACE (SMS) MK7; ARLEIGH BURKE CLASS DDG
MATERIALRUBBER
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 1
3255811-7Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5343-08?
5343-08 is a O-RING.
What parts can replace 5343-08?
There is 1 known substitute for 5343-08: 3255811-7. Substitute compatibility should be verified for your specific system.
What is the NSN for 5343-08?
5343-08 is cataloged in the U.S. Government catalog under NSN 5331-01-503-0147. 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.