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40078607 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

40078607: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include outside_diameter: 18.0 INCHES NOMINAL IN, special_features: WEIGHT: 1LB LBS, cross-sectional_height: 0.5 INCHES NOMINAL IN, part_name_assigned_by_controlling_agency: FILTER SEAL. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-657-4420, 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
40078607
NSN: 5331-01-657-4420
FSC: 5331 — O-ring
CAGE: KCUC6 — MINISTRY OF DEFENCE, FUTURE AIRCRAFT CARRIER IPT (CVF IPT) (GBR)
SPECIFICATIONS
outside_diameter18.0 INCHES NOMINAL IN
special_featuresWEIGHT: 1LB LBS
cross-sectional_height0.5 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyFILTER SEAL
NSN5331-01-657-4420
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 40078607 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: 0.5 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 18.0 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.5 INCHES NOMINAL IN
OUTSIDE DIAMETER18.0 INCHES NOMINAL IN
SPECIAL FEATURESWEIGHT: 1LB LBS
PART NAME ASSIGNED BY CONTROLLING AGENCYFILTER SEAL
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 40078607?
40078607 is a O-RING.
What is the NSN for 40078607?
40078607 is cataloged in the U.S. Government catalog under NSN 5331-01-657-4420. 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.