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3165931 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

3165931: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC AND PLASTIC POLYTETRAFLUOROETHYLENE, center_hole_diameter: 4.329 INCHES MINIMUM AND 4.389 INCHES MAXIMUM IN, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-278-2022, 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
3165931
NSN: 5331-01-278-2022
FSC: 5331 — O-ring
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC AND PLASTIC POLYTETRAFLUOROETHYLENE
center_hole_diameter4.329 INCHES MINIMUM AND 4.389 INCHES MAXIMUM IN
cross-sectional_height0.135 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN
NSN5331-01-278-2022
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3165931 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: 0.135 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 4.329 INCHES MINIMUM AND 4.389 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SYNTHETIC AND PLASTIC POLYTETRAFLUOROETHYLENE
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN
CENTER HOLE DIAMETER4.329 INCHES MINIMUM AND 4.389 INCHES MAXIMUM IN
MATERIALRUBBER SYNTHETIC AND PLASTIC POLYTETRAFLUOROETHYLENE
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: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3165931?
3165931 is a O-RING.
What is the NSN for 3165931?
3165931 is cataloged in the U.S. Government catalog under NSN 5331-01-278-2022. 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.