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2A0318 — SEAL,NONMETALLIC SPECIAL SHAPED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

2A0318: SEAL,NONMETALLIC SPECIAL SHAPED.

SEAL,NONMETALLIC SPECIAL SHAPED. Key specifications include material: RUBBER OVERALL, construction: SOLID, overall_length: 0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN, cross-sectional_width: 0.594 INCHES NOMINAL IN, cross-sectional_height: 1.750 INCHES NOMINAL IN, cross_section_inside_diameter: 0.688 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-149-7579, 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
2A0318
NSN: 5330-00-149-7579
FSC: 5330 — Packing and Gasket Materials
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialRUBBER OVERALL
constructionSOLID
overall_length0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN
cross-sectional_width0.594 INCHES NOMINAL IN
cross-sectional_height1.750 INCHES NOMINAL IN
cross_section_inside_diameter0.688 INCHES NOMINAL IN
NSN5330-00-149-7579
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2A0318 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: 1.750 INCHES NOMINAL IN
•
CROSS-SECTIONAL WIDTH: 0.594 INCHES NOMINAL IN
•
CROSS SECTION INSIDE DIAMETER: 0.688 INCHES NOMINAL IN
•
MATERIAL: RUBBER OVERALL
•
CONSTRUCTION: SOLID
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT1.750 INCHES NOMINAL IN
CROSS-SECTIONAL WIDTH0.594 INCHES NOMINAL IN
OVERALL LENGTH0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN
CROSS SECTION INSIDE DIAMETER0.688 INCHES NOMINAL IN
MATERIALRUBBER OVERALL
CONSTRUCTIONSOLID
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2A0318?
2A0318 is a SEAL,NONMETALLIC SPECIAL SHAPED.
What is the NSN for 2A0318?
2A0318 is cataloged in the U.S. Government catalog under NSN 5330-00-149-7579. 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.