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18A313 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

18A313: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, center_hole_diameter: 22.310 INCHES MINIMUM AND 22.810 INCHES MAXIMUM IN, cross-sectional_height: 0.375 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-070-2117, 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
18A313
NSN: 5331-01-070-2117
FSC: 5331 — O-ring
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialRUBBER SYNTHETIC
center_hole_diameter22.310 INCHES MINIMUM AND 22.810 INCHES MAXIMUM IN
cross-sectional_height0.375 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
NSN5331-01-070-2117
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 18A313 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: 0.375 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 22.310 INCHES MINIMUM AND 22.810 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.375 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
CENTER HOLE DIAMETER22.310 INCHES MINIMUM AND 22.810 INCHES MAXIMUM IN
MATERIALRUBBER SYNTHETIC
SUBSTITUTES & CROSS-REFERENCES 2
S84777Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
A16425Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 18A313?
18A313 is a O-RING.
What parts can replace 18A313?
There are 2 known substitutes for 18A313: S84777, A16425. Substitute compatibility should be verified for your specific system.
What is the NSN for 18A313?
18A313 is cataloged in the U.S. Government catalog under NSN 5331-01-070-2117. 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.