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Technical Data Sheet
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1AA-20-004 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1AA-20-004: O-RING.

The O-RING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5331-01-358-0976, 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
1AA-20-004
NSN: 5331-01-358-0976
FSC: 5331 — O-ring
CAGE: 58396 — ALLIED ENTERPRISES, INC. (USA)
SPECIFICATIONS
Part Number1AA-20-004
NSN5331-01-358-0976
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1AA-20-004 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
SUBSTITUTES & CROSS-REFERENCES 1
23172Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1AA-20-004?
1AA-20-004 is a O-RING.
What parts can replace 1AA-20-004?
There is 1 known substitute for 1AA-20-004: 23172. Substitute compatibility should be verified for your specific system.
What is the NSN for 1AA-20-004?
1AA-20-004 is cataloged in the U.S. Government catalog under NSN 5331-01-358-0976. This indicates validated use in U.S. government and defense supply chains.
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